diff --git a/config/dedup.us.yaml b/config/dedup.us.yaml
index 7f93f3350..693d73102 100644
--- a/config/dedup.us.yaml
+++ b/config/dedup.us.yaml
@@ -15034,3 +15034,10 @@ groups:
     func: DEFINE_func_80184A08
     vram: 0x80184A08
     binaries: [ov_SC02_000, ov_SC02_003]
+  - id: E_func_80186E6C
+    tier: h_exact
+    hash: 621bba09bb15bb39a04790ed442c30b4f7c47d2b
+    source: src/shared/engine_core.h
+    func: DEFINE_func_80186E6C
+    vram: 0x80186E6C
+    binaries: [ov_SC02_000, ov_SC02_003]
diff --git a/src/ov_SC02_000/ov_SC02_000_jr_8018173C.c b/src/ov_SC02_000/ov_SC02_000_jr_8018173C.c
index 15310b433..222a993f1 100644
--- a/src/ov_SC02_000/ov_SC02_000_jr_8018173C.c
+++ b/src/ov_SC02_000/ov_SC02_000_jr_8018173C.c
@@ -4208,50 +4208,7 @@ void func_80186E30(void *a0) {
 
 #include "common.h"
 
-extern void func_8012C1B8(void);
-extern void func_8012CAE4(void *a0);
-extern void func_8001C214(s32 a0, s32 a1);
-extern void func_8001D0E8(s32 a0, s32 a1, s32 a2);
-extern void func_8012A828(s32 a0, void *a1);
-extern void func_8012B200(u8 *a0);
-
-extern u8 D_801E071C;
-extern u8 D_801E2164;
-extern M2C_UNK D_8018AF28;
-extern s32 D_8018F3B4;
-
-void func_80186E6C(s32 param_1)
-{
-    s32 v0;
-    s32 addr;
-    u8 v2;
-
-    v0 = ((s32 (*)(void))func_8012C1B8)();
-    *(s32 *)(param_1 + 0x20) = v0;
-    if (v0 == 0) {
-        ((void (*)(s32))func_8012CAE4)(param_1);
-        return;
-    }
-
-    ((void (*)(s32, void *))func_8001C214)(
-        v0, (*(s16 *)(param_1 + 0x70) != 0) ? &D_801E2164 : &D_801E071C);
-
-    func_8001D0E8(*(s32 *)(param_1 + 0x20), 0x140, 0xF0);
-
-    addr = (s32)&D_8018F3B4;
-    *(s32 *)(param_1 + 0x58) = addr | 0x40000000;
-    *(u16 *)(param_1 + 0x5C) |= 0xC00;
-    func_8012A828(param_1, &(*(u8 *)&D_8018AF28));
-
-    v2 = 4;
-    if (*(s16 *)(param_1 + 0x70) != 0) {
-        v2 = 1;
-    }
-    *(u8 *)(param_1 + 0x75) = v2;
-    func_8012B200((u8 *)param_1);
-
-    *(u16 *)(param_1 + 2) = *(u16 *)(param_1 + 2) + 1;
-}
+DEFINE_func_80186E6C()  /* dedup: shared engine-core @0x80186E6C (src/shared) */
 
 
 INCLUDE_ASM("asm/ov_SC02_000/nonmatchings/ov_SC02_000_jr_8018173C", func_80186F44);
diff --git a/src/ov_SC02_003/ov_SC02_003_jr_8018173C.c b/src/ov_SC02_003/ov_SC02_003_jr_8018173C.c
index 70f70946a..493fb5658 100644
--- a/src/ov_SC02_003/ov_SC02_003_jr_8018173C.c
+++ b/src/ov_SC02_003/ov_SC02_003_jr_8018173C.c
@@ -3313,7 +3313,7 @@ void func_80186E30(void *a0) {
 }
 
 
-INCLUDE_ASM("asm/ov_SC02_003/nonmatchings/ov_SC02_003_jr_8018173C", func_80186E6C);
+DEFINE_func_80186E6C()  /* dedup: shared engine-core @0x80186E6C (src/shared) */
 
 INCLUDE_ASM("asm/ov_SC02_003/nonmatchings/ov_SC02_003_jr_8018173C", func_80186F44);
 
diff --git a/src/shared/engine_core.h b/src/shared/engine_core.h
index 9d9d9f548..9ef8c8c5a 100644
--- a/src/shared/engine_core.h
+++ b/src/shared/engine_core.h
@@ -62079,6 +62079,44 @@
         } \
     }
 
+#define DEFINE_func_80186E6C() \
+    extern void func_8012C1B8(void); \
+    extern void func_8012CAE4(void *a0); \
+    extern void func_8001C214(s32 a0, s32 a1); \
+    extern void func_8001D0E8(s32 a0, s32 a1, s32 a2); \
+    extern void func_8012A828(s32 a0, void *a1); \
+    extern void func_8012B200(u8 *a0); \
+    extern u8 D_801E071C; \
+    extern u8 D_801E2164; \
+    extern M2C_UNK D_8018AF28; \
+    extern s32 D_8018F3B4; \
+    void func_80186E6C(s32 param_1) \
+    { \
+        s32 v0; \
+        s32 addr; \
+        u8 v2; \
+        v0 = ((s32 (*)(void))func_8012C1B8)(); \
+        *(s32 *)(param_1 + 0x20) = v0; \
+        if (v0 == 0) { \
+            ((void (*)(s32))func_8012CAE4)(param_1); \
+            return; \
+        } \
+        ((void (*)(s32, void *))func_8001C214)( \
+            v0, (*(s16 *)(param_1 + 0x70) != 0) ? &D_801E2164 : &D_801E071C); \
+        func_8001D0E8(*(s32 *)(param_1 + 0x20), 0x140, 0xF0); \
+        addr = (s32)&D_8018F3B4; \
+        *(s32 *)(param_1 + 0x58) = addr | 0x40000000; \
+        *(u16 *)(param_1 + 0x5C) |= 0xC00; \
+        func_8012A828(param_1, &(*(u8 *)&D_8018AF28)); \
+        v2 = 4; \
+        if (*(s16 *)(param_1 + 0x70) != 0) { \
+            v2 = 1; \
+        } \
+        *(u8 *)(param_1 + 0x75) = v2; \
+        func_8012B200((u8 *)param_1); \
+        *(u16 *)(param_1 + 2) = *(u16 *)(param_1 + 2) + 1; \
+    }
+
 #endif
 
 #define DEFINE_func_80128EA8() \
@@ -153563,4 +153601,42 @@
         } \
     }
 
+#define DEFINE_func_80186E6C() \
+    extern void func_8012C1B8(void); \
+    extern void func_8012CAE4(void *a0); \
+    extern void func_8001C214(s32 a0, s32 a1); \
+    extern void func_8001D0E8(s32 a0, s32 a1, s32 a2); \
+    extern void func_8012A828(s32 a0, void *a1); \
+    extern void func_8012B200(u8 *a0); \
+    extern u8 D_801E071C; \
+    extern u8 D_801E2164; \
+    extern M2C_UNK D_8018AF28; \
+    extern s32 D_8018F3B4; \
+    void func_80186E6C(s32 param_1) \
+    { \
+        s32 v0; \
+        s32 addr; \
+        u8 v2; \
+        v0 = ((s32 (*)(void))func_8012C1B8)(); \
+        *(s32 *)(param_1 + 0x20) = v0; \
+        if (v0 == 0) { \
+            ((void (*)(s32))func_8012CAE4)(param_1); \
+            return; \
+        } \
+        ((void (*)(s32, void *))func_8001C214)( \
+            v0, (*(s16 *)(param_1 + 0x70) != 0) ? &D_801E2164 : &D_801E071C); \
+        func_8001D0E8(*(s32 *)(param_1 + 0x20), 0x140, 0xF0); \
+        addr = (s32)&D_8018F3B4; \
+        *(s32 *)(param_1 + 0x58) = addr | 0x40000000; \
+        *(u16 *)(param_1 + 0x5C) |= 0xC00; \
+        func_8012A828(param_1, &(*(u8 *)&D_8018AF28)); \
+        v2 = 4; \
+        if (*(s16 *)(param_1 + 0x70) != 0) { \
+            v2 = 1; \
+        } \
+        *(u8 *)(param_1 + 0x75) = v2; \
+        func_8012B200((u8 *)param_1); \
+        *(u16 *)(param_1 + 2) = *(u16 *)(param_1 + 2) + 1; \
+    }
+
 #endif