diff --git a/campaign/Readme.md b/campaign/Readme.md
index 7e458683f..34cc7460a 100644
--- a/campaign/Readme.md
+++ b/campaign/Readme.md
@@ -295,3 +295,4 @@ To add a new event, add a new row in here, and run `python -m module.config.conf
 | 20260417   | event 20260417 cn        | Vacation Lane – Beachside Brilliance         | -                          | -                                                  | -                                    | 假日航線閃耀海濱           |
 | 20260417   | event 20201126 cn        | Vacation Lane Rerun                          | -                          | -                                                  | -                                    | 復刻假日航線               |
 | 20260514   | event 20221222 cn        | Parallel Superimposition                     | -                          | -                                                  | -                                    | 復刻定向折疊               |
+| 20260520   | event 20260520 cn        | Alliance Before the Hagiobull                | 圣印前的同盟               | Alliance Before the Hagiobull                      | 聖印前の同盟                         | -                          |
diff --git a/campaign/event_20260520_cn/a1.py b/campaign/event_20260520_cn/a1.py
new file mode 100644
index 000000000..4282bf15d
--- /dev/null
+++ b/campaign/event_20260520_cn/a1.py
@@ -0,0 +1,84 @@
+from module.campaign.campaign_base import CampaignBase
+from module.map.map_base import CampaignMap
+from module.map.map_grids import SelectedGrids, RoadGrids
+from module.logger import logger
+
+MAP = CampaignMap('A1')
+MAP.shape = 'I8'
+MAP.camera_data = ['D2', 'D6', 'F2', 'F6']
+MAP.camera_data_spawn_point = ['F2', 'D2']
+MAP.map_data = """
+    -- -- -- SP -- SP -- -- --
+    -- ME ++ -- -- -- -- ME --
+    -- ++ Me -- __ -- ++ ++ --
+    -- ++ -- MS -- MS -- ++ --
+    ME -- ME -- -- -- Me Me --
+    ++ -- -- -- ++ -- -- -- ME
+    ++ ME -- -- MB -- ME -- ++
+    ME -- ME ++ ++ ++ -- ME --
+"""
+MAP.weight_data = """
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+"""
+MAP.spawn_data = [
+    {'battle': 0, 'enemy': 2, 'siren': 1},
+    {'battle': 1, 'enemy': 1},
+    {'battle': 2, 'enemy': 1},
+    {'battle': 3, 'enemy': 1, 'boss': 1},
+    {'battle': 4, 'enemy': 1},
+]
+A1, B1, C1, D1, E1, F1, G1, H1, I1, \
+A2, B2, C2, D2, E2, F2, G2, H2, I2, \
+A3, B3, C3, D3, E3, F3, G3, H3, I3, \
+A4, B4, C4, D4, E4, F4, G4, H4, I4, \
+A5, B5, C5, D5, E5, F5, G5, H5, I5, \
+A6, B6, C6, D6, E6, F6, G6, H6, I6, \
+A7, B7, C7, D7, E7, F7, G7, H7, I7, \
+A8, B8, C8, D8, E8, F8, G8, H8, I8, \
+    = MAP.flatten()
+
+
+class Config:
+    # ===== Start of generated config =====
+    MAP_SIREN_TEMPLATE = []
+    MOVABLE_ENEMY_TURN = (2,)
+    MAP_HAS_SIREN = True
+    MAP_HAS_MOVABLE_ENEMY = True
+    MAP_HAS_MAP_STORY = False
+    MAP_HAS_FLEET_STEP = True
+    MAP_HAS_AMBUSH = False
+    MAP_HAS_MYSTERY = False
+    MAP_CHAPTER_SWITCH_20241219 = True
+    STAGE_ENTRANCE = ['half', '20240725']
+    MAP_HAS_MODE_SWITCH = True
+    STAGE_INCREASE_AB = True
+    MAP_WALK_USE_CURRENT_FLEET = True
+    # ===== End of generated config =====
+
+    MAP_SIREN_HAS_BOSS_ICON_SMALL = True
+    MAP_SWIPE_MULTIPLY = (1.238, 1.261)
+    MAP_SWIPE_MULTIPLY_MINITOUCH = (1.197, 1.219)
+    MAP_SWIPE_MULTIPLY_MAATOUCH = (1.162, 1.183)
+
+
+class Campaign(CampaignBase):
+    MAP = MAP
+    ENEMY_FILTER = '1L > 1M > 1E > 1C > 2L > 2M > 2E > 2C > 3L > 3M > 3E > 3C'
+
+    def battle_0(self):
+        if self.clear_siren():
+            return True
+        if self.clear_filter_enemy(self.ENEMY_FILTER, preserve=0):
+            return True
+
+        return self.battle_default()
+
+    def battle_3(self):
+        return self.clear_boss()
diff --git a/campaign/event_20260520_cn/a2.py b/campaign/event_20260520_cn/a2.py
new file mode 100644
index 000000000..d305c5484
--- /dev/null
+++ b/campaign/event_20260520_cn/a2.py
@@ -0,0 +1,77 @@
+from module.campaign.campaign_base import CampaignBase
+from module.map.map_base import CampaignMap
+from module.map.map_grids import SelectedGrids, RoadGrids
+from module.logger import logger
+from .a1 import Config as ConfigBase
+
+MAP = CampaignMap('A2')
+MAP.shape = 'I7'
+MAP.camera_data = ['D2', 'D5', 'E2', 'E5']
+MAP.camera_data_spawn_point = ['D2']
+MAP.map_data = """
+    -- ++ ++ -- Me ++ ME -- --
+    ME ++ ++ SP -- -- -- ME --
+    -- -- SP -- -- MS ++ ++ ++
+    Me -- -- -- MS -- Me -- --
+    -- ++ -- MS -- __ -- ME --
+    -- ME -- -- ME -- -- ++ ++
+    ME -- -- ++ -- ME -- MB ++
+"""
+MAP.weight_data = """
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+"""
+MAP.spawn_data = [
+    {'battle': 0, 'enemy': 2, 'siren': 1},
+    {'battle': 1, 'enemy': 1},
+    {'battle': 2, 'enemy': 1},
+    {'battle': 3, 'enemy': 1},
+    {'battle': 4, 'enemy': 1, 'boss': 1},
+]
+A1, B1, C1, D1, E1, F1, G1, H1, I1, \
+A2, B2, C2, D2, E2, F2, G2, H2, I2, \
+A3, B3, C3, D3, E3, F3, G3, H3, I3, \
+A4, B4, C4, D4, E4, F4, G4, H4, I4, \
+A5, B5, C5, D5, E5, F5, G5, H5, I5, \
+A6, B6, C6, D6, E6, F6, G6, H6, I6, \
+A7, B7, C7, D7, E7, F7, G7, H7, I7, \
+    = MAP.flatten()
+
+
+class Config(ConfigBase):
+    # ===== Start of generated config =====
+    MAP_SIREN_TEMPLATE = []
+    MOVABLE_ENEMY_TURN = (2,)
+    MAP_HAS_SIREN = True
+    MAP_HAS_MOVABLE_ENEMY = True
+    MAP_HAS_MAP_STORY = False
+    MAP_HAS_FLEET_STEP = True
+    MAP_HAS_AMBUSH = False
+    MAP_HAS_MYSTERY = False
+    MAP_CHAPTER_SWITCH_20241219 = True
+    STAGE_ENTRANCE = ['half', '20240725']
+    MAP_HAS_MODE_SWITCH = True
+    STAGE_INCREASE_AB = True
+    MAP_WALK_USE_CURRENT_FLEET = True
+    # ===== End of generated config =====
+
+
+class Campaign(CampaignBase):
+    MAP = MAP
+    ENEMY_FILTER = '1L > 1M > 1E > 1C > 2L > 2M > 2E > 2C > 3L > 3M > 3E > 3C'
+
+    def battle_0(self):
+        if self.clear_siren():
+            return True
+        if self.clear_filter_enemy(self.ENEMY_FILTER, preserve=0):
+            return True
+
+        return self.battle_default()
+
+    def battle_4(self):
+        return self.clear_boss()
diff --git a/campaign/event_20260520_cn/a3.py b/campaign/event_20260520_cn/a3.py
new file mode 100644
index 000000000..9bd6fcc7b
--- /dev/null
+++ b/campaign/event_20260520_cn/a3.py
@@ -0,0 +1,83 @@
+from module.campaign.campaign_base import CampaignBase
+from module.map.map_base import CampaignMap
+from module.map.map_grids import SelectedGrids, RoadGrids
+from module.logger import logger
+from .a1 import Config as ConfigBase
+
+MAP = CampaignMap('A3')
+MAP.shape = 'H9'
+MAP.camera_data = ['D2', 'D6', 'D7', 'E2', 'E6', 'E7']
+MAP.camera_data_spawn_point = ['D2', 'D6']
+MAP.map_data = """
+    -- -- ++ -- -- ME -- --
+    -- -- ++ Me Me -- -- --
+    ++ ++ ++ -- -- ME -- --
+    SP -- -- MS -- -- -- --
+    -- -- MS -- __ Me ++ --
+    SP -- -- MS -- -- MB --
+    ++ ++ ++ -- -- -- -- ME
+    -- -- ++ -- Me -- ME --
+    -- -- ++ ME -- ME -- ME
+"""
+MAP.weight_data = """
+    50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50
+"""
+MAP.spawn_data = [
+    {'battle': 0, 'enemy': 2, 'siren': 1},
+    {'battle': 1, 'enemy': 1},
+    {'battle': 2, 'enemy': 1},
+    {'battle': 3, 'enemy': 1},
+    {'battle': 4, 'enemy': 1, 'boss': 1},
+]
+A1, B1, C1, D1, E1, F1, G1, H1, \
+A2, B2, C2, D2, E2, F2, G2, H2, \
+A3, B3, C3, D3, E3, F3, G3, H3, \
+A4, B4, C4, D4, E4, F4, G4, H4, \
+A5, B5, C5, D5, E5, F5, G5, H5, \
+A6, B6, C6, D6, E6, F6, G6, H6, \
+A7, B7, C7, D7, E7, F7, G7, H7, \
+A8, B8, C8, D8, E8, F8, G8, H8, \
+A9, B9, C9, D9, E9, F9, G9, H9, \
+    = MAP.flatten()
+
+
+class Config(ConfigBase):
+    # ===== Start of generated config =====
+    MAP_SIREN_TEMPLATE = []
+    MOVABLE_ENEMY_TURN = (2,)
+    MAP_HAS_SIREN = True
+    MAP_HAS_MOVABLE_ENEMY = True
+    MAP_HAS_MAP_STORY = False
+    MAP_HAS_FLEET_STEP = True
+    MAP_HAS_AMBUSH = False
+    MAP_HAS_MYSTERY = False
+    MAP_CHAPTER_SWITCH_20241219 = True
+    STAGE_ENTRANCE = ['half', '20240725']
+    MAP_HAS_MODE_SWITCH = True
+    STAGE_INCREASE_AB = True
+    MAP_WALK_USE_CURRENT_FLEET = True
+    # ===== End of generated config =====
+
+
+class Campaign(CampaignBase):
+    MAP = MAP
+    ENEMY_FILTER = '1L > 1M > 1E > 1C > 2L > 2M > 2E > 2C > 3L > 3M > 3E > 3C'
+
+    def battle_0(self):
+        if self.clear_siren():
+            return True
+        if self.clear_filter_enemy(self.ENEMY_FILTER, preserve=0):
+            return True
+
+        return self.battle_default()
+
+    def battle_4(self):
+        return self.clear_boss()
diff --git a/campaign/event_20260520_cn/b1.py b/campaign/event_20260520_cn/b1.py
new file mode 100644
index 000000000..f50f96ac5
--- /dev/null
+++ b/campaign/event_20260520_cn/b1.py
@@ -0,0 +1,82 @@
+from module.campaign.campaign_base import CampaignBase
+from module.map.map_base import CampaignMap
+from module.map.map_grids import SelectedGrids, RoadGrids
+from module.logger import logger
+
+MAP = CampaignMap('B1')
+MAP.shape = 'I7'
+MAP.camera_data = ['D2', 'D5', 'F2', 'F5']
+MAP.camera_data_spawn_point = ['D5']
+MAP.map_data = """
+    -- Me -- -- -- -- -- ++ --
+    ME -- ME ++ ++ -- ME ++ --
+    ++ -- ++ ++ ++ Me -- ME --
+    -- MS -- ME Me -- -- ++ ++
+    -- -- MS -- -- __ -- MB ++
+    SP -- -- MS -- Me -- -- ME
+    -- SP -- ++ ++ ++ ME ME --
+"""
+MAP.weight_data = """
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+"""
+MAP.spawn_data = [
+    {'battle': 0, 'enemy': 2, 'siren': 1},
+    {'battle': 1, 'enemy': 1},
+    {'battle': 2, 'enemy': 2},
+    {'battle': 3, 'enemy': 1},
+    {'battle': 4, 'enemy': 2, 'boss': 1},
+    {'battle': 5, 'enemy': 1},
+]
+A1, B1, C1, D1, E1, F1, G1, H1, I1, \
+A2, B2, C2, D2, E2, F2, G2, H2, I2, \
+A3, B3, C3, D3, E3, F3, G3, H3, I3, \
+A4, B4, C4, D4, E4, F4, G4, H4, I4, \
+A5, B5, C5, D5, E5, F5, G5, H5, I5, \
+A6, B6, C6, D6, E6, F6, G6, H6, I6, \
+A7, B7, C7, D7, E7, F7, G7, H7, I7, \
+    = MAP.flatten()
+
+
+class Config:
+    # ===== Start of generated config =====
+    MAP_SIREN_TEMPLATE = []
+    MOVABLE_ENEMY_TURN = (2,)
+    MAP_HAS_SIREN = True
+    MAP_HAS_MOVABLE_ENEMY = True
+    MAP_HAS_MAP_STORY = False
+    MAP_HAS_FLEET_STEP = True
+    MAP_HAS_AMBUSH = False
+    MAP_HAS_MYSTERY = False
+    MAP_CHAPTER_SWITCH_20241219 = True
+    STAGE_ENTRANCE = ['half', '20240725']
+    MAP_HAS_MODE_SWITCH = True
+    STAGE_INCREASE_AB = True
+    MAP_WALK_USE_CURRENT_FLEET = True
+    # ===== End of generated config =====
+
+    MAP_SIREN_HAS_BOSS_ICON_SMALL = True
+    MAP_SWIPE_MULTIPLY = (1.132, 1.154)
+    MAP_SWIPE_MULTIPLY_MINITOUCH = (1.095, 1.115)
+    MAP_SWIPE_MULTIPLY_MAATOUCH = (1.063, 1.082)
+
+
+class Campaign(CampaignBase):
+    MAP = MAP
+    ENEMY_FILTER = '1L > 1M > 1E > 1C > 2L > 2M > 2E > 2C > 3L > 3M > 3E > 3C'
+
+    def battle_0(self):
+        if self.clear_siren():
+            return True
+        if self.clear_filter_enemy(self.ENEMY_FILTER, preserve=0):
+            return True
+
+        return self.battle_default()
+
+    def battle_4(self):
+        return self.clear_boss()
diff --git a/campaign/event_20260520_cn/b2.py b/campaign/event_20260520_cn/b2.py
new file mode 100644
index 000000000..6081d74d5
--- /dev/null
+++ b/campaign/event_20260520_cn/b2.py
@@ -0,0 +1,81 @@
+from module.campaign.campaign_base import CampaignBase
+from module.map.map_base import CampaignMap
+from module.map.map_grids import SelectedGrids, RoadGrids
+from module.logger import logger
+from .b1 import Config as ConfigBase
+
+MAP = CampaignMap('B2')
+MAP.shape = 'J8'
+MAP.camera_data = ['D3', 'D6', 'G3', 'G6']
+MAP.camera_data_spawn_point = ['G3']
+MAP.map_data = """
+    -- ++ -- -- -- -- -- ++ ++ ++
+    -- ++ ME ME ++ -- MS -- -- SP
+    -- Me -- -- Me -- -- MS -- --
+    MB -- -- -- __ -- MS -- -- SP
+    -- ME ++ ME -- Me ++ ++ -- ++
+    -- -- ME -- -- -- Me ++ -- ++
+    ++ ++ -- -- ME -- -- -- -- ME
+    ++ ++ -- -- ++ -- ME -- ME --
+"""
+MAP.weight_data = """
+    50 50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50 50
+"""
+MAP.spawn_data = [
+    {'battle': 0, 'enemy': 2, 'siren': 1},
+    {'battle': 1, 'enemy': 1},
+    {'battle': 2, 'enemy': 2},
+    {'battle': 3, 'enemy': 1},
+    {'battle': 4, 'enemy': 2},
+    {'battle': 5, 'enemy': 1, 'boss': 1},
+]
+A1, B1, C1, D1, E1, F1, G1, H1, I1, J1, \
+A2, B2, C2, D2, E2, F2, G2, H2, I2, J2, \
+A3, B3, C3, D3, E3, F3, G3, H3, I3, J3, \
+A4, B4, C4, D4, E4, F4, G4, H4, I4, J4, \
+A5, B5, C5, D5, E5, F5, G5, H5, I5, J5, \
+A6, B6, C6, D6, E6, F6, G6, H6, I6, J6, \
+A7, B7, C7, D7, E7, F7, G7, H7, I7, J7, \
+A8, B8, C8, D8, E8, F8, G8, H8, I8, J8, \
+    = MAP.flatten()
+
+
+class Config(ConfigBase):
+    # ===== Start of generated config =====
+    MAP_SIREN_TEMPLATE = []
+    MOVABLE_ENEMY_TURN = (2,)
+    MAP_HAS_SIREN = True
+    MAP_HAS_MOVABLE_ENEMY = True
+    MAP_HAS_MAP_STORY = False
+    MAP_HAS_FLEET_STEP = True
+    MAP_HAS_AMBUSH = False
+    MAP_HAS_MYSTERY = False
+    MAP_CHAPTER_SWITCH_20241219 = True
+    STAGE_ENTRANCE = ['half', '20240725']
+    MAP_HAS_MODE_SWITCH = True
+    STAGE_INCREASE_AB = True
+    MAP_WALK_USE_CURRENT_FLEET = True
+    # ===== End of generated config =====
+
+
+class Campaign(CampaignBase):
+    MAP = MAP
+    ENEMY_FILTER = '1L > 1M > 1E > 1C > 2L > 2M > 2E > 2C > 3L > 3M > 3E > 3C'
+
+    def battle_0(self):
+        if self.clear_siren():
+            return True
+        if self.clear_filter_enemy(self.ENEMY_FILTER, preserve=0):
+            return True
+
+        return self.battle_default()
+
+    def battle_5(self):
+        return self.fleet_boss.clear_boss()
diff --git a/campaign/event_20260520_cn/b3.py b/campaign/event_20260520_cn/b3.py
new file mode 100644
index 000000000..6c38279b6
--- /dev/null
+++ b/campaign/event_20260520_cn/b3.py
@@ -0,0 +1,84 @@
+from module.campaign.campaign_base import CampaignBase
+from module.map.map_base import CampaignMap
+from module.map.map_grids import SelectedGrids, RoadGrids
+from module.logger import logger
+from .b1 import Config as ConfigBase
+
+MAP = CampaignMap('B3')
+MAP.shape = 'I9'
+MAP.camera_data = ['D3', 'D7', 'F3', 'F7']
+MAP.camera_data_spawn_point = ['F7', 'D7']
+MAP.map_data = """
+    ++ ++ ++ -- -- -- ++ ++ ++
+    -- -- ME -- -- -- ME -- --
+    -- ME -- ME -- ME -- ME --
+    -- ++ -- -- ++ -- -- ++ --
+    ME ++ Me -- -- -- Me ++ ME
+    -- Me -- -- MB -- -- Me --
+    -- -- MS -- MS -- MS -- --
+    ++ ++ -- -- __ -- -- ++ ++
+    ++ ++ -- SP -- SP -- ++ ++
+"""
+MAP.weight_data = """
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+"""
+MAP.spawn_data = [
+    {'battle': 0, 'enemy': 2, 'siren': 2},
+    {'battle': 1, 'enemy': 1},
+    {'battle': 2, 'enemy': 2},
+    {'battle': 3, 'enemy': 1},
+    {'battle': 4, 'enemy': 2},
+    {'battle': 5, 'enemy': 1, 'boss': 1},
+]
+A1, B1, C1, D1, E1, F1, G1, H1, I1, \
+A2, B2, C2, D2, E2, F2, G2, H2, I2, \
+A3, B3, C3, D3, E3, F3, G3, H3, I3, \
+A4, B4, C4, D4, E4, F4, G4, H4, I4, \
+A5, B5, C5, D5, E5, F5, G5, H5, I5, \
+A6, B6, C6, D6, E6, F6, G6, H6, I6, \
+A7, B7, C7, D7, E7, F7, G7, H7, I7, \
+A8, B8, C8, D8, E8, F8, G8, H8, I8, \
+A9, B9, C9, D9, E9, F9, G9, H9, I9, \
+    = MAP.flatten()
+
+
+class Config(ConfigBase):
+    # ===== Start of generated config =====
+    MAP_SIREN_TEMPLATE = []
+    MOVABLE_ENEMY_TURN = (2,)
+    MAP_HAS_SIREN = True
+    MAP_HAS_MOVABLE_ENEMY = True
+    MAP_HAS_MAP_STORY = False
+    MAP_HAS_FLEET_STEP = True
+    MAP_HAS_AMBUSH = False
+    MAP_HAS_MYSTERY = False
+    MAP_CHAPTER_SWITCH_20241219 = True
+    STAGE_ENTRANCE = ['half', '20240725']
+    MAP_HAS_MODE_SWITCH = True
+    STAGE_INCREASE_AB = True
+    MAP_WALK_USE_CURRENT_FLEET = True
+    # ===== End of generated config =====
+
+
+class Campaign(CampaignBase):
+    MAP = MAP
+    ENEMY_FILTER = '1L > 1M > 1E > 1C > 2L > 2M > 2E > 2C > 3L > 3M > 3E > 3C'
+
+    def battle_0(self):
+        if self.clear_siren():
+            return True
+        if self.clear_filter_enemy(self.ENEMY_FILTER, preserve=0):
+            return True
+
+        return self.battle_default()
+
+    def battle_5(self):
+        return self.fleet_boss.clear_boss()
diff --git a/campaign/event_20260520_cn/c1.py b/campaign/event_20260520_cn/c1.py
new file mode 100644
index 000000000..b373b5a60
--- /dev/null
+++ b/campaign/event_20260520_cn/c1.py
@@ -0,0 +1,84 @@
+from module.campaign.campaign_base import CampaignBase
+from module.map.map_base import CampaignMap
+from module.map.map_grids import SelectedGrids, RoadGrids
+from module.logger import logger
+
+MAP = CampaignMap('C1')
+MAP.shape = 'I8'
+MAP.camera_data = ['D2', 'D6', 'F2', 'F6']
+MAP.camera_data_spawn_point = ['F2', 'D2']
+MAP.map_data = """
+    -- -- -- SP -- SP -- -- --
+    -- ME ++ -- -- -- -- ME --
+    -- ++ Me -- __ -- ++ ++ --
+    -- ++ -- MS -- MS -- ++ --
+    ME -- ME -- -- -- Me Me --
+    ++ -- -- -- ++ -- -- -- ME
+    ++ ME -- -- MB -- ME -- ++
+    ME -- ME ++ ++ ++ -- ME --
+"""
+MAP.weight_data = """
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+"""
+MAP.spawn_data = [
+    {'battle': 0, 'enemy': 2, 'siren': 2},
+    {'battle': 1, 'enemy': 1},
+    {'battle': 2, 'enemy': 2},
+    {'battle': 3, 'enemy': 1},
+    {'battle': 4, 'enemy': 1, 'boss': 1},
+]
+A1, B1, C1, D1, E1, F1, G1, H1, I1, \
+A2, B2, C2, D2, E2, F2, G2, H2, I2, \
+A3, B3, C3, D3, E3, F3, G3, H3, I3, \
+A4, B4, C4, D4, E4, F4, G4, H4, I4, \
+A5, B5, C5, D5, E5, F5, G5, H5, I5, \
+A6, B6, C6, D6, E6, F6, G6, H6, I6, \
+A7, B7, C7, D7, E7, F7, G7, H7, I7, \
+A8, B8, C8, D8, E8, F8, G8, H8, I8, \
+    = MAP.flatten()
+
+
+class Config:
+    # ===== Start of generated config =====
+    MAP_SIREN_TEMPLATE = []
+    MOVABLE_ENEMY_TURN = (2,)
+    MAP_HAS_SIREN = True
+    MAP_HAS_MOVABLE_ENEMY = True
+    MAP_HAS_MAP_STORY = False
+    MAP_HAS_FLEET_STEP = True
+    MAP_HAS_AMBUSH = False
+    MAP_HAS_MYSTERY = False
+    MAP_CHAPTER_SWITCH_20241219 = True
+    STAGE_ENTRANCE = ['half', '20240725']
+    MAP_HAS_MODE_SWITCH = True
+    STAGE_INCREASE_AB = True
+    MAP_WALK_USE_CURRENT_FLEET = True
+    # ===== End of generated config =====
+
+    MAP_SIREN_HAS_BOSS_ICON_SMALL = True
+    MAP_SWIPE_MULTIPLY = (1.238, 1.261)
+    MAP_SWIPE_MULTIPLY_MINITOUCH = (1.197, 1.219)
+    MAP_SWIPE_MULTIPLY_MAATOUCH = (1.162, 1.183)
+
+
+class Campaign(CampaignBase):
+    MAP = MAP
+    ENEMY_FILTER = '1L > 1M > 1E > 1C > 2L > 2M > 2E > 2C > 3L > 3M > 3E > 3C'
+
+    def battle_0(self):
+        if self.clear_siren():
+            return True
+        if self.clear_filter_enemy(self.ENEMY_FILTER, preserve=0):
+            return True
+
+        return self.battle_default()
+
+    def battle_4(self):
+        return self.clear_boss()
diff --git a/campaign/event_20260520_cn/c2.py b/campaign/event_20260520_cn/c2.py
new file mode 100644
index 000000000..23fc76d7a
--- /dev/null
+++ b/campaign/event_20260520_cn/c2.py
@@ -0,0 +1,77 @@
+from module.campaign.campaign_base import CampaignBase
+from module.map.map_base import CampaignMap
+from module.map.map_grids import SelectedGrids, RoadGrids
+from module.logger import logger
+from .c1 import Config as ConfigBase
+
+MAP = CampaignMap('C2')
+MAP.shape = 'I7'
+MAP.camera_data = ['D2', 'D5', 'E2', 'E5']
+MAP.camera_data_spawn_point = ['D2']
+MAP.map_data = """
+    -- ++ ++ -- Me ++ ME -- --
+    ME ++ ++ SP -- -- -- ME --
+    -- -- SP -- -- MS ++ ++ ++
+    Me -- -- -- MS -- Me -- --
+    -- ++ -- MS -- __ -- ME --
+    -- ME -- -- ME -- -- ++ ++
+    ME -- -- ++ -- ME -- MB ++
+"""
+MAP.weight_data = """
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+"""
+MAP.spawn_data = [
+    {'battle': 0, 'enemy': 2, 'siren': 2},
+    {'battle': 1, 'enemy': 1},
+    {'battle': 2, 'enemy': 2},
+    {'battle': 3, 'enemy': 1},
+    {'battle': 4, 'enemy': 1, 'boss': 1},
+]
+A1, B1, C1, D1, E1, F1, G1, H1, I1, \
+A2, B2, C2, D2, E2, F2, G2, H2, I2, \
+A3, B3, C3, D3, E3, F3, G3, H3, I3, \
+A4, B4, C4, D4, E4, F4, G4, H4, I4, \
+A5, B5, C5, D5, E5, F5, G5, H5, I5, \
+A6, B6, C6, D6, E6, F6, G6, H6, I6, \
+A7, B7, C7, D7, E7, F7, G7, H7, I7, \
+    = MAP.flatten()
+
+
+class Config(ConfigBase):
+    # ===== Start of generated config =====
+    MAP_SIREN_TEMPLATE = []
+    MOVABLE_ENEMY_TURN = (2,)
+    MAP_HAS_SIREN = True
+    MAP_HAS_MOVABLE_ENEMY = True
+    MAP_HAS_MAP_STORY = False
+    MAP_HAS_FLEET_STEP = True
+    MAP_HAS_AMBUSH = False
+    MAP_HAS_MYSTERY = False
+    MAP_CHAPTER_SWITCH_20241219 = True
+    STAGE_ENTRANCE = ['half', '20240725']
+    MAP_HAS_MODE_SWITCH = True
+    STAGE_INCREASE_AB = True
+    MAP_WALK_USE_CURRENT_FLEET = True
+    # ===== End of generated config =====
+
+
+class Campaign(CampaignBase):
+    MAP = MAP
+    ENEMY_FILTER = '1L > 1M > 1E > 1C > 2L > 2M > 2E > 2C > 3L > 3M > 3E > 3C'
+
+    def battle_0(self):
+        if self.clear_siren():
+            return True
+        if self.clear_filter_enemy(self.ENEMY_FILTER, preserve=0):
+            return True
+
+        return self.battle_default()
+
+    def battle_4(self):
+        return self.clear_boss()
diff --git a/campaign/event_20260520_cn/c3.py b/campaign/event_20260520_cn/c3.py
new file mode 100644
index 000000000..c390b6f22
--- /dev/null
+++ b/campaign/event_20260520_cn/c3.py
@@ -0,0 +1,84 @@
+from module.campaign.campaign_base import CampaignBase
+from module.map.map_base import CampaignMap
+from module.map.map_grids import SelectedGrids, RoadGrids
+from module.logger import logger
+from .c1 import Config as ConfigBase
+
+MAP = CampaignMap('C3')
+MAP.shape = 'H9'
+MAP.camera_data = ['D2', 'D6', 'D7', 'E2', 'E6', 'E7']
+MAP.camera_data_spawn_point = ['D2', 'D6']
+MAP.map_data = """
+    -- -- ++ -- -- ME -- --
+    -- -- ++ Me Me -- -- --
+    ++ ++ ++ -- -- ME -- --
+    SP -- -- MS -- -- -- --
+    -- -- MS -- __ Me ++ --
+    SP -- -- MS -- -- MB --
+    ++ ++ ++ -- -- -- -- ME
+    -- -- ++ -- Me -- ME --
+    -- -- ++ ME -- ME -- ME
+"""
+MAP.weight_data = """
+    50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50
+"""
+MAP.spawn_data = [
+    {'battle': 0, 'enemy': 2, 'siren': 2},
+    {'battle': 1, 'enemy': 1},
+    {'battle': 2, 'enemy': 2},
+    {'battle': 3, 'enemy': 1},
+    {'battle': 4, 'enemy': 1},
+    {'battle': 5, 'boss': 1},
+]
+A1, B1, C1, D1, E1, F1, G1, H1, \
+A2, B2, C2, D2, E2, F2, G2, H2, \
+A3, B3, C3, D3, E3, F3, G3, H3, \
+A4, B4, C4, D4, E4, F4, G4, H4, \
+A5, B5, C5, D5, E5, F5, G5, H5, \
+A6, B6, C6, D6, E6, F6, G6, H6, \
+A7, B7, C7, D7, E7, F7, G7, H7, \
+A8, B8, C8, D8, E8, F8, G8, H8, \
+A9, B9, C9, D9, E9, F9, G9, H9, \
+    = MAP.flatten()
+
+
+class Config(ConfigBase):
+    # ===== Start of generated config =====
+    MAP_SIREN_TEMPLATE = []
+    MOVABLE_ENEMY_TURN = (2,)
+    MAP_HAS_SIREN = True
+    MAP_HAS_MOVABLE_ENEMY = True
+    MAP_HAS_MAP_STORY = False
+    MAP_HAS_FLEET_STEP = True
+    MAP_HAS_AMBUSH = False
+    MAP_HAS_MYSTERY = False
+    MAP_CHAPTER_SWITCH_20241219 = True
+    STAGE_ENTRANCE = ['half', '20240725']
+    MAP_HAS_MODE_SWITCH = True
+    STAGE_INCREASE_AB = True
+    MAP_WALK_USE_CURRENT_FLEET = True
+    # ===== End of generated config =====
+
+
+class Campaign(CampaignBase):
+    MAP = MAP
+    ENEMY_FILTER = '1L > 1M > 1E > 1C > 2L > 2M > 2E > 2C > 3L > 3M > 3E > 3C'
+
+    def battle_0(self):
+        if self.clear_siren():
+            return True
+        if self.clear_filter_enemy(self.ENEMY_FILTER, preserve=0):
+            return True
+
+        return self.battle_default()
+
+    def battle_5(self):
+        return self.fleet_boss.clear_boss()
diff --git a/campaign/event_20260520_cn/d1.py b/campaign/event_20260520_cn/d1.py
new file mode 100644
index 000000000..5573b142a
--- /dev/null
+++ b/campaign/event_20260520_cn/d1.py
@@ -0,0 +1,82 @@
+from module.campaign.campaign_base import CampaignBase
+from module.map.map_base import CampaignMap
+from module.map.map_grids import SelectedGrids, RoadGrids
+from module.logger import logger
+
+MAP = CampaignMap('D1')
+MAP.shape = 'I7'
+MAP.camera_data = ['D2', 'D5', 'F2', 'F5']
+MAP.camera_data_spawn_point = ['D5']
+MAP.map_data = """
+    -- Me -- -- -- -- -- ++ --
+    ME -- ME ++ ++ -- ME ++ --
+    ++ -- ++ ++ ++ Me -- ME --
+    -- MS -- ME Me -- -- ++ ++
+    -- -- MS -- -- __ -- MB ++
+    SP -- -- MS -- Me -- -- ME
+    -- SP -- ++ ++ ++ ME ME --
+"""
+MAP.weight_data = """
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+"""
+MAP.spawn_data = [
+    {'battle': 0, 'enemy': 2, 'siren': 2},
+    {'battle': 1, 'enemy': 1},
+    {'battle': 2, 'enemy': 2},
+    {'battle': 3, 'enemy': 1},
+    {'battle': 4, 'enemy': 2},
+    {'battle': 5, 'enemy': 1, 'boss': 1},
+]
+A1, B1, C1, D1, E1, F1, G1, H1, I1, \
+A2, B2, C2, D2, E2, F2, G2, H2, I2, \
+A3, B3, C3, D3, E3, F3, G3, H3, I3, \
+A4, B4, C4, D4, E4, F4, G4, H4, I4, \
+A5, B5, C5, D5, E5, F5, G5, H5, I5, \
+A6, B6, C6, D6, E6, F6, G6, H6, I6, \
+A7, B7, C7, D7, E7, F7, G7, H7, I7, \
+    = MAP.flatten()
+
+
+class Config:
+    # ===== Start of generated config =====
+    MAP_SIREN_TEMPLATE = []
+    MOVABLE_ENEMY_TURN = (2,)
+    MAP_HAS_SIREN = True
+    MAP_HAS_MOVABLE_ENEMY = True
+    MAP_HAS_MAP_STORY = False
+    MAP_HAS_FLEET_STEP = True
+    MAP_HAS_AMBUSH = False
+    MAP_HAS_MYSTERY = False
+    MAP_CHAPTER_SWITCH_20241219 = True
+    STAGE_ENTRANCE = ['half', '20240725']
+    MAP_HAS_MODE_SWITCH = True
+    STAGE_INCREASE_AB = True
+    MAP_WALK_USE_CURRENT_FLEET = True
+    # ===== End of generated config =====
+
+    MAP_SIREN_HAS_BOSS_ICON_SMALL = True
+    MAP_SWIPE_MULTIPLY = (1.132, 1.154)
+    MAP_SWIPE_MULTIPLY_MINITOUCH = (1.095, 1.115)
+    MAP_SWIPE_MULTIPLY_MAATOUCH = (1.063, 1.082)
+
+
+class Campaign(CampaignBase):
+    MAP = MAP
+    ENEMY_FILTER = '1L > 1M > 1E > 1C > 2L > 2M > 2E > 2C > 3L > 3M > 3E > 3C'
+
+    def battle_0(self):
+        if self.clear_siren():
+            return True
+        if self.clear_filter_enemy(self.ENEMY_FILTER, preserve=0):
+            return True
+
+        return self.battle_default()
+
+    def battle_5(self):
+        return self.fleet_boss.clear_boss()
diff --git a/campaign/event_20260520_cn/d2.py b/campaign/event_20260520_cn/d2.py
new file mode 100644
index 000000000..84d326066
--- /dev/null
+++ b/campaign/event_20260520_cn/d2.py
@@ -0,0 +1,90 @@
+from module.campaign.campaign_base import CampaignBase
+from module.map.map_base import CampaignMap
+from module.map.map_grids import SelectedGrids, RoadGrids
+from module.logger import logger
+from .d1 import Config as ConfigBase
+
+MAP = CampaignMap('D2')
+MAP.shape = 'J8'
+MAP.camera_data = ['D3', 'D6', 'G3', 'G6']
+MAP.camera_data_spawn_point = ['G3']
+MAP.map_data = """
+    -- ++ -- -- -- -- -- ++ ++ ++
+    -- ++ ME ME ++ -- MS -- -- SP
+    -- Me -- -- Me -- -- MS -- --
+    MB -- -- -- __ -- MS -- -- SP
+    -- ME ++ ME -- Me ++ ++ -- ++
+    -- -- ME -- -- -- Me ++ -- ++
+    ++ ++ -- -- ME -- -- -- -- ME
+    ++ ++ -- -- ++ -- ME -- ME --
+"""
+MAP.weight_data = """
+    50 50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50 50
+"""
+MAP.spawn_data = [
+    {'battle': 0, 'enemy': 2, 'siren': 2},
+    {'battle': 1, 'enemy': 1},
+    {'battle': 2, 'enemy': 2, 'siren': 1},
+    {'battle': 3, 'enemy': 1},
+    {'battle': 4, 'enemy': 2},
+    {'battle': 5, 'enemy': 1},
+    {'battle': 6, 'boss': 1},
+]
+A1, B1, C1, D1, E1, F1, G1, H1, I1, J1, \
+A2, B2, C2, D2, E2, F2, G2, H2, I2, J2, \
+A3, B3, C3, D3, E3, F3, G3, H3, I3, J3, \
+A4, B4, C4, D4, E4, F4, G4, H4, I4, J4, \
+A5, B5, C5, D5, E5, F5, G5, H5, I5, J5, \
+A6, B6, C6, D6, E6, F6, G6, H6, I6, J6, \
+A7, B7, C7, D7, E7, F7, G7, H7, I7, J7, \
+A8, B8, C8, D8, E8, F8, G8, H8, I8, J8, \
+    = MAP.flatten()
+
+
+class Config(ConfigBase):
+    # ===== Start of generated config =====
+    MAP_SIREN_TEMPLATE = []
+    MOVABLE_ENEMY_TURN = (2,)
+    MAP_HAS_SIREN = True
+    MAP_HAS_MOVABLE_ENEMY = True
+    MAP_HAS_MAP_STORY = False
+    MAP_HAS_FLEET_STEP = True
+    MAP_HAS_AMBUSH = False
+    MAP_HAS_MYSTERY = False
+    MAP_CHAPTER_SWITCH_20241219 = True
+    STAGE_ENTRANCE = ['half', '20240725']
+    MAP_HAS_MODE_SWITCH = True
+    STAGE_INCREASE_AB = True
+    MAP_WALK_USE_CURRENT_FLEET = True
+    # ===== End of generated config =====
+
+
+class Campaign(CampaignBase):
+    MAP = MAP
+    ENEMY_FILTER = '1L > 1M > 1E > 1C > 2L > 2M > 2E > 2C > 3L > 3M > 3E > 3C'
+
+    def battle_0(self):
+        if self.clear_siren():
+            return True
+        if self.clear_filter_enemy(self.ENEMY_FILTER, preserve=1):
+            return True
+
+        return self.battle_default()
+
+    def battle_5(self):
+        if self.clear_siren():
+            return True
+        if self.clear_filter_enemy(self.ENEMY_FILTER, preserve=0):
+            return True
+
+        return self.battle_default()
+
+    def battle_6(self):
+        return self.fleet_boss.clear_boss()
diff --git a/campaign/event_20260520_cn/d3.py b/campaign/event_20260520_cn/d3.py
new file mode 100644
index 000000000..5cba7d0e8
--- /dev/null
+++ b/campaign/event_20260520_cn/d3.py
@@ -0,0 +1,93 @@
+from module.campaign.campaign_base import CampaignBase
+from module.map.map_base import CampaignMap
+from module.map.map_grids import SelectedGrids, RoadGrids
+from module.logger import logger
+from .d1 import Config as ConfigBase
+
+MAP = CampaignMap('D3')
+MAP.shape = 'I9'
+MAP.camera_data = ['D3', 'D7', 'F3', 'F7']
+MAP.camera_data_spawn_point = ['F7', 'D7']
+MAP.map_data = """
+    ++ ++ ++ -- -- -- ++ ++ ++
+    -- -- ME -- -- -- ME -- --
+    -- ME -- ME -- ME -- ME --
+    -- ++ -- -- ++ -- -- ++ --
+    ME ++ Me -- -- -- Me ++ ME
+    -- Me -- -- MB -- -- Me --
+    -- -- MS -- MS -- MS -- --
+    ++ ++ -- -- __ -- -- ++ ++
+    ++ ++ -- SP -- SP -- ++ ++
+"""
+MAP.weight_data = """
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+"""
+MAP.spawn_data = [
+    {'battle': 0, 'enemy': 2, 'siren': 2},
+    {'battle': 1, 'enemy': 1},
+    {'battle': 2, 'enemy': 2, 'siren': 1},
+    {'battle': 3, 'enemy': 1},
+    {'battle': 4, 'enemy': 2},
+    {'battle': 5, 'enemy': 1},
+    {'battle': 6, 'boss': 1},
+]
+A1, B1, C1, D1, E1, F1, G1, H1, I1, \
+A2, B2, C2, D2, E2, F2, G2, H2, I2, \
+A3, B3, C3, D3, E3, F3, G3, H3, I3, \
+A4, B4, C4, D4, E4, F4, G4, H4, I4, \
+A5, B5, C5, D5, E5, F5, G5, H5, I5, \
+A6, B6, C6, D6, E6, F6, G6, H6, I6, \
+A7, B7, C7, D7, E7, F7, G7, H7, I7, \
+A8, B8, C8, D8, E8, F8, G8, H8, I8, \
+A9, B9, C9, D9, E9, F9, G9, H9, I9, \
+    = MAP.flatten()
+
+
+class Config(ConfigBase):
+    # ===== Start of generated config =====
+    MAP_SIREN_TEMPLATE = []
+    MOVABLE_ENEMY_TURN = (2,)
+    MAP_HAS_SIREN = True
+    MAP_HAS_MOVABLE_ENEMY = True
+    MAP_HAS_MAP_STORY = False
+    MAP_HAS_FLEET_STEP = True
+    MAP_HAS_AMBUSH = False
+    MAP_HAS_MYSTERY = False
+    MAP_CHAPTER_SWITCH_20241219 = True
+    STAGE_ENTRANCE = ['half', '20240725']
+    MAP_HAS_MODE_SWITCH = True
+    STAGE_INCREASE_AB = True
+    MAP_WALK_USE_CURRENT_FLEET = True
+    # ===== End of generated config =====
+
+
+class Campaign(CampaignBase):
+    MAP = MAP
+    ENEMY_FILTER = '1L > 1M > 1E > 1C > 2L > 2M > 2E > 2C > 3L > 3M > 3E > 3C'
+
+    def battle_0(self):
+        if self.clear_siren():
+            return True
+        if self.clear_filter_enemy(self.ENEMY_FILTER, preserve=1):
+            return True
+
+        return self.battle_default()
+
+    def battle_5(self):
+        if self.clear_siren():
+            return True
+        if self.clear_filter_enemy(self.ENEMY_FILTER, preserve=0):
+            return True
+
+        return self.battle_default()
+
+    def battle_6(self):
+        return self.fleet_boss.clear_boss()
diff --git a/campaign/event_20260520_cn/sp.py b/campaign/event_20260520_cn/sp.py
new file mode 100644
index 000000000..71a9a5a86
--- /dev/null
+++ b/campaign/event_20260520_cn/sp.py
@@ -0,0 +1,105 @@
+from module.campaign.campaign_base import CampaignBase
+from module.map.map_base import CampaignMap
+from module.map.map_grids import SelectedGrids, RoadGrids
+from module.logger import logger
+
+MAP = CampaignMap('SP')
+MAP.shape = 'I10'
+MAP.camera_data = ['D6', 'D8']
+MAP.camera_data_spawn_point = ['D6']
+MAP.map_data = """
+    -- -- -- ++ ++ ++ -- -- --
+    -- ++ -- -- -- -- -- ++ --
+    -- -- -- -- -- -- -- -- --
+    ++ ++ ++ -- ++ -- ++ ++ ++
+    -- -- ME SP -- SP ME -- --
+    -- -- -- -- __ -- -- -- --
+    -- -- ME -- MS -- ME -- --
+    -- -- -- MS -- MS -- -- --
+    -- ++ ME -- MB -- ME ++ --
+    -- -- -- ME -- ME -- -- --
+"""
+MAP.weight_data = """
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+    50 50 50 50 50 50 50 50 50
+"""
+MAP.spawn_data = [
+    {'battle': 0, 'enemy': 8, 'siren': 3},
+    {'battle': 1},
+    {'battle': 2},
+    {'battle': 3},
+    {'battle': 4},
+    {'battle': 5},
+    {'battle': 6},
+    {'battle': 7, 'boss': 1},
+]
+A1, B1, C1, D1, E1, F1, G1, H1, I1, \
+A2, B2, C2, D2, E2, F2, G2, H2, I2, \
+A3, B3, C3, D3, E3, F3, G3, H3, I3, \
+A4, B4, C4, D4, E4, F4, G4, H4, I4, \
+A5, B5, C5, D5, E5, F5, G5, H5, I5, \
+A6, B6, C6, D6, E6, F6, G6, H6, I6, \
+A7, B7, C7, D7, E7, F7, G7, H7, I7, \
+A8, B8, C8, D8, E8, F8, G8, H8, I8, \
+A9, B9, C9, D9, E9, F9, G9, H9, I9, \
+A10, B10, C10, D10, E10, F10, G10, H10, I10, \
+    = MAP.flatten()
+
+
+class Config:
+    # ===== Start of generated config =====
+    MAP_SIREN_TEMPLATE = []
+    MOVABLE_ENEMY_TURN = (2,)
+    MAP_HAS_SIREN = True
+    MAP_HAS_MOVABLE_ENEMY = True
+    MAP_HAS_MAP_STORY = False
+    MAP_HAS_FLEET_STEP = True
+    MAP_HAS_AMBUSH = False
+    MAP_HAS_MYSTERY = False
+    MAP_CHAPTER_SWITCH_20241219 = True
+    STAGE_ENTRANCE = ['half', '20240725']
+    MAP_HAS_MODE_SWITCH = False
+    STAGE_INCREASE_AB = True
+    MAP_WALK_USE_CURRENT_FLEET = True
+    STAR_REQUIRE_1 = 0
+    STAR_REQUIRE_2 = 0
+    STAR_REQUIRE_3 = 0
+    # ===== End of generated config =====
+
+    MAP_IS_ONE_TIME_STAGE = True
+    MAP_SIREN_HAS_BOSS_ICON_SMALL = True
+    MAP_SWIPE_MULTIPLY = (1.071, 1.091)
+    MAP_SWIPE_MULTIPLY_MINITOUCH = (1.036, 1.055)
+    MAP_SWIPE_MULTIPLY_MAATOUCH = (1.006, 1.024)
+
+
+class Campaign(CampaignBase):
+    MAP = MAP
+    ENEMY_FILTER = '1L > 1M > 1E > 1C > 2L > 2M > 2E > 2C > 3L > 3M > 3E > 3C'
+
+    def battle_0(self):
+        if self.clear_siren():
+            return True
+        if self.clear_filter_enemy(self.ENEMY_FILTER, preserve=2):
+            return True
+
+        return self.battle_default()
+
+    def battle_5(self):
+        if self.clear_siren():
+            return True
+        if self.clear_filter_enemy(self.ENEMY_FILTER, preserve=0):
+            return True
+
+        return self.battle_default()
+
+    def battle_7(self):
+        return self.fleet_boss.clear_boss()
diff --git a/module/config/argument/args.json b/module/config/argument/args.json
index 4fd39b0f4..3dc51978b 100644
--- a/module/config/argument/args.json
+++ b/module/config/argument/args.json
@@ -1642,34 +1642,24 @@
         "type": "select",
         "value": "campaign_main",
         "option": [
-          "event_20201126_cn",
           "event_20221222_cn",
-          "event_20250424_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_cn": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_en": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_jp": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_tw": [
           "event_20221222_cn"
         ],
         "option_bold": [
-          "event_20201126_cn",
           "event_20221222_cn",
-          "event_20250424_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ]
       },
       "Mode": {
@@ -1934,34 +1924,24 @@
         "type": "select",
         "value": "campaign_main",
         "option": [
-          "event_20201126_cn",
           "event_20221222_cn",
-          "event_20250424_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_cn": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_en": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_jp": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_tw": [
           "event_20221222_cn"
         ],
         "option_bold": [
-          "event_20201126_cn",
           "event_20221222_cn",
-          "event_20250424_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ]
       },
       "Mode": {
@@ -2341,34 +2321,24 @@
         "type": "select",
         "value": "campaign_main",
         "option": [
-          "event_20201126_cn",
           "event_20221222_cn",
-          "event_20250424_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_cn": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_en": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_jp": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_tw": [
           "event_20221222_cn"
         ],
         "option_bold": [
-          "event_20201126_cn",
           "event_20221222_cn",
-          "event_20250424_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ]
       },
       "Mode": {
@@ -4088,34 +4058,24 @@
         "type": "select",
         "value": "campaign_main",
         "option": [
-          "event_20201126_cn",
           "event_20221222_cn",
-          "event_20250424_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_cn": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_en": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_jp": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_tw": [
           "event_20221222_cn"
         ],
         "option_bold": [
-          "event_20201126_cn",
           "event_20221222_cn",
-          "event_20250424_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ]
       },
       "Mode": {
@@ -4512,34 +4472,24 @@
         "type": "select",
         "value": "campaign_main",
         "option": [
-          "event_20201126_cn",
           "event_20221222_cn",
-          "event_20250424_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_cn": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_en": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_jp": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_tw": [
           "event_20221222_cn"
         ],
         "option_bold": [
-          "event_20201126_cn",
           "event_20221222_cn",
-          "event_20250424_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ]
       },
       "Mode": {
@@ -4936,34 +4886,24 @@
         "type": "select",
         "value": "campaign_main",
         "option": [
-          "event_20201126_cn",
           "event_20221222_cn",
-          "event_20250424_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_cn": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_en": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_jp": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_tw": [
           "event_20221222_cn"
         ],
         "option_bold": [
-          "event_20201126_cn",
           "event_20221222_cn",
-          "event_20250424_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ]
       },
       "Mode": {
@@ -5360,34 +5300,24 @@
         "type": "select",
         "value": "campaign_main",
         "option": [
-          "event_20201126_cn",
           "event_20221222_cn",
-          "event_20250424_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_cn": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_en": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_jp": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_tw": [
           "event_20221222_cn"
         ],
         "option_bold": [
-          "event_20201126_cn",
           "event_20221222_cn",
-          "event_20250424_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ]
       },
       "Mode": {
@@ -5774,34 +5704,24 @@
         "type": "select",
         "value": "campaign_main",
         "option": [
-          "event_20201126_cn",
           "event_20221222_cn",
-          "event_20250424_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_cn": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_en": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_jp": [
-          "event_20250424_cn",
-          "event_20201126_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ],
         "option_tw": [
           "event_20221222_cn"
         ],
         "option_bold": [
-          "event_20201126_cn",
           "event_20221222_cn",
-          "event_20250424_cn",
-          "event_20260417_cn"
+          "event_20260520_cn"
         ]
       },
       "Mode": {
diff --git a/module/config/i18n/en-US.json b/module/config/i18n/en-US.json
index 690eb97f5..e421bc159 100644
--- a/module/config/i18n/en-US.json
+++ b/module/config/i18n/en-US.json
@@ -770,6 +770,7 @@
       "event_20260226_cn": "Springtide Inn Online",
       "event_20260326_cn": "The Vagabond’s Recruitment Plan",
       "event_20260417_cn": "Vacation Lane – Beachside Brilliance",
+      "event_20260520_cn": "Alliance Before the Hagiobull",
       "raid_20200624": "Air Raid Drills with Essex Rerun",
       "raid_20210708": "Cross Wave rerun",
       "raid_20220127": "Mystery Investigation",
diff --git a/module/config/i18n/ja-JP.json b/module/config/i18n/ja-JP.json
index b98863229..5d2c6a480 100644
--- a/module/config/i18n/ja-JP.json
+++ b/module/config/i18n/ja-JP.json
@@ -770,6 +770,7 @@
       "event_20260226_cn": "春色旅籠Online",
       "event_20260326_cn": "ワンダラー募集計画",
       "event_20260417_cn": "バケーションレーン・きらめく砂浜",
+      "event_20260520_cn": "聖印前の同盟",
       "raid_20200624": "特別演習超空強襲波（復刻）",
       "raid_20210708": "交錯する新たな波 (復刻)",
       "raid_20220127": "秘密事件調査",
diff --git a/module/config/i18n/zh-CN.json b/module/config/i18n/zh-CN.json
index 9a0dd5810..3286c52fd 100644
--- a/module/config/i18n/zh-CN.json
+++ b/module/config/i18n/zh-CN.json
@@ -770,6 +770,7 @@
       "event_20260226_cn": "春满客栈Online",
       "event_20260326_cn": "漫游者招募计划",
       "event_20260417_cn": "假日航线闪耀海滨",
+      "event_20260520_cn": "圣印前的同盟",
       "raid_20200624": "复刻特别演习埃塞克斯级",
       "raid_20210708": "复刻穿越彼方的水线",
       "raid_20220127": "演习神秘事件调查",
diff --git a/module/config/i18n/zh-TW.json b/module/config/i18n/zh-TW.json
index 2fdca0af2..5150741d2 100644
--- a/module/config/i18n/zh-TW.json
+++ b/module/config/i18n/zh-TW.json
@@ -770,6 +770,7 @@
       "event_20260226_cn": "春滿客棧Online",
       "event_20260326_cn": "漫遊者招募計劃",
       "event_20260417_cn": "假日航線閃耀海濱",
+      "event_20260520_cn": "Alliance Before the Hagiobull",
       "raid_20200624": "特別演習埃塞克斯級(復刻)",
       "raid_20210708": "復刻穿越彼方的水線",
       "raid_20220127": "演習神秘事件調查",