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Date: Tue, 22 Sep 2026 19:05:12 +0800
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---
 .../GF/swordman_female/demon_slayer.py        |  6 +-
 .../unit/test_demon_slayer_blade_dance.py     | 66 +++++++++++++++++++
 2 files changed, 69 insertions(+), 3 deletions(-)
 create mode 100644 backend/tests/unit/test_demon_slayer_blade_dance.py

diff --git a/backend/core/character/GF/swordman_female/demon_slayer.py b/backend/core/character/GF/swordman_female/demon_slayer.py
index 8c4987e0..5ad6c1d6 100644
--- a/backend/core/character/GF/swordman_female/demon_slayer.py
+++ b/backend/core/character/GF/swordman_female/demon_slayer.py
@@ -922,7 +922,7 @@ class Skill28(ActiveSkill):
     data4 = data0
     hit4 = 10
 
-    data5 = data1
+    data5 = data2
     hit5 = 1
     power4 = 0
     power5 = 0
@@ -1403,8 +1403,8 @@ class Skill36(PassiveSkill):
         {"data":data0,"type":"*skillDamage","exceptSkills":["魔刃狂舞","蛇腹剑 : 缠","唤魔 : 塔莫斯之袭"]},
         {"data":data1,"type":"+power8","skills":["蛇腹剑 : 缠"]},
         {"data":data1,"type":"+power9","skills":["蛇腹剑 : 缠"]},
-        {"data":data2,"type":"+power4","skills":["魔刃狂舞"]},
-        {"data":data2,"type":"+power5","skills":["魔刃狂舞"]},
+        {"data":data3,"type":"+power4","skills":["魔刃狂舞"]},
+        {"data":data3,"type":"+power5","skills":["魔刃狂舞"]},
         {"data":data4,"type":"+hit1","skills":["唤魔 : 塔莫斯之袭"],"ratio": 1},
         {"data":data5,"type":"*power3","skills":["唤魔 : 塔莫斯之袭"]}
     ]
diff --git a/backend/tests/unit/test_demon_slayer_blade_dance.py b/backend/tests/unit/test_demon_slayer_blade_dance.py
new file mode 100644
index 00000000..16d06e11
--- /dev/null
+++ b/backend/tests/unit/test_demon_slayer_blade_dance.py
@@ -0,0 +1,66 @@
+import ast
+from pathlib import Path
+
+
+SKILL_FILE = (
+    Path(__file__).resolve().parents[2]
+    / "core"
+    / "character"
+    / "GF"
+    / "swordman_female"
+    / "demon_slayer.py"
+)
+
+
+def _skill_class(name: str) -> ast.ClassDef:
+    module = ast.parse(SKILL_FILE.read_text(encoding="utf-8"))
+    return next(
+        node
+        for node in module.body
+        if isinstance(node, ast.ClassDef)
+        and any(
+            isinstance(item, ast.Assign)
+            and any(isinstance(target, ast.Name) and target.id == "name" for target in item.targets)
+            and isinstance(item.value, ast.Constant)
+            and item.value.value == name
+            for item in node.body
+        )
+    )
+
+
+def test_blade_dance_shadow_uses_final_hit_damage_not_hit_count():
+    skill = _skill_class("魔刃狂舞")
+    shadow_final_hit = next(
+        item
+        for item in skill.body
+        if isinstance(item, ast.Assign)
+        and any(isinstance(target, ast.Name) and target.id == "data5" for target in item.targets)
+    )
+
+    assert isinstance(shadow_final_hit.value, ast.Name)
+    assert shadow_final_hit.value.id == "data2"
+
+
+def test_blade_dance_shadow_uses_its_own_passive_ratio():
+    passive = _skill_class("唤魔 : 弑神剑")
+    associations = next(
+        item.value
+        for item in passive.body
+        if isinstance(item, ast.Assign)
+        and any(isinstance(target, ast.Name) and target.id == "associate" for target in item.targets)
+    )
+    shadow_associations = [
+        dict(zip((key.value for key in entry.keys), entry.values))
+        for entry in associations.elts
+        if isinstance(entry, ast.Dict)
+    ]
+
+    for power in ("+power4", "+power5"):
+        association = next(
+            entry
+            for entry in shadow_associations
+            if isinstance(entry.get("type"), ast.Constant)
+            and entry["type"].value == power
+        )
+        assert isinstance(association["data"], ast.Name)
+        assert association["data"].id == "data3"
-- 
2.54.0