diff --git a/config/dedup.us.yaml b/config/dedup.us.yaml
index 0c00e043bf..120a2cf3b1 100644
--- a/config/dedup.us.yaml
+++ b/config/dedup.us.yaml
@@ -14922,3 +14922,10 @@ groups:
     func: DEFINE_func_801829F8
     vram: 0x801829F8
     binaries: [ov_SC02_000, ov_SC02_003]
+  - id: E_func_80186D88
+    tier: h_exact
+    hash: 6ce35974c320da5f8ee8b38ff75eb2d2a5cdef64
+    source: src/shared/engine_core.h
+    func: DEFINE_func_80186D88
+    vram: 0x80186D88
+    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 9ff93220eb..ad22e09883 100644
--- a/src/ov_SC02_000/ov_SC02_000_jr_8018173C.c
+++ b/src/ov_SC02_000/ov_SC02_000_jr_8018173C.c
@@ -4692,41 +4692,7 @@ void func_80186CE8(s32 a0) {
 
 #include "common.h"
 
-extern s32 func_80143BDC(u16 *a0);
-extern void func_80187558();
-extern void func_8002D4C8(s32 a0, s32 a1);
-extern void func_8012C218(void *a0);
-
-void func_80186D88(void *s0) {
-    void *a0;
-    s16 v0, v1;
-    u16 sp[3];
-    s32 result;
-    void *v3;
-
-    a0 = *(void **)((char *)s0 + 0x64);
-    v0 = *(s16 *)((char *)a0 + 0xE);
-    v1 = *(s16 *)((char *)s0 + 0xE);
-
-    if ((v0 - 0x80) < v1) {
-        *(s16 *)((char *)a0 + 0xFE) = 1;
-
-        sp[0] = *(u16 *)((char *)s0 + 0x6);
-        sp[1] = *(u16 *)((char *)s0 + 0xA) - 0x40;
-        sp[2] = *(u16 *)((char *)s0 + 0xE);
-
-        result = func_80143BDC(sp);
-        if (result) {
-            v3 = *(void **)((char *)result + 0xCC);
-            *(s16 *)((char *)v3 + 0x1A) = 0x5000;
-            *(s16 *)((char *)v3 + 0x18) = 0x5000;
-        }
-
-        func_80187558(s0);
-        func_8002D4C8(0x4DC, 0);
-        func_8012C218(s0);
-    }
-}
+DEFINE_func_80186D88()  /* dedup: shared engine-core @0x80186D88 (src/shared) */
 
 
 
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 3d611f8d24..acff1ffec1 100644
--- a/src/ov_SC02_003/ov_SC02_003_jr_8018173C.c
+++ b/src/ov_SC02_003/ov_SC02_003_jr_8018173C.c
@@ -3303,7 +3303,7 @@ void func_80186CAC(void *a0) {
 
 INCLUDE_ASM("asm/ov_SC02_003/nonmatchings/ov_SC02_003_jr_8018173C", func_80186CE8);
 
-INCLUDE_ASM("asm/ov_SC02_003/nonmatchings/ov_SC02_003_jr_8018173C", func_80186D88);
+DEFINE_func_80186D88()  /* dedup: shared engine-core @0x80186D88 (src/shared) */
 
 
 extern void (*D_8018F3C4[])(void);
diff --git a/src/shared/engine_core.h b/src/shared/engine_core.h
index 5d44d77e63..29fdc19689 100644
--- a/src/shared/engine_core.h
+++ b/src/shared/engine_core.h
@@ -61378,6 +61378,37 @@
         } \
     }
 
+#define DEFINE_func_80186D88() \
+    extern s32 func_80143BDC(u16 *a0); \
+    extern void func_80187558(); \
+    extern void func_8002D4C8(s32 a0, s32 a1); \
+    extern void func_8012C218(void *a0); \
+    void func_80186D88(void *s0) { \
+        void *a0; \
+        s16 v0, v1; \
+        u16 sp[3]; \
+        s32 result; \
+        void *v3; \
+        a0 = *(void **)((char *)s0 + 0x64); \
+        v0 = *(s16 *)((char *)a0 + 0xE); \
+        v1 = *(s16 *)((char *)s0 + 0xE); \
+        if ((v0 - 0x80) < v1) { \
+            *(s16 *)((char *)a0 + 0xFE) = 1; \
+            sp[0] = *(u16 *)((char *)s0 + 0x6); \
+            sp[1] = *(u16 *)((char *)s0 + 0xA) - 0x40; \
+            sp[2] = *(u16 *)((char *)s0 + 0xE); \
+            result = func_80143BDC(sp); \
+            if (result) { \
+                v3 = *(void **)((char *)result + 0xCC); \
+                *(s16 *)((char *)v3 + 0x1A) = 0x5000; \
+                *(s16 *)((char *)v3 + 0x18) = 0x5000; \
+            } \
+            func_80187558(s0); \
+            func_8002D4C8(0x4DC, 0); \
+            func_8012C218(s0); \
+        } \
+    }
+
 #endif
 
 #define DEFINE_func_80128EA8() \
@@ -152161,4 +152192,35 @@
         } \
     }
 
+#define DEFINE_func_80186D88() \
+    extern s32 func_80143BDC(u16 *a0); \
+    extern void func_80187558(); \
+    extern void func_8002D4C8(s32 a0, s32 a1); \
+    extern void func_8012C218(void *a0); \
+    void func_80186D88(void *s0) { \
+        void *a0; \
+        s16 v0, v1; \
+        u16 sp[3]; \
+        s32 result; \
+        void *v3; \
+        a0 = *(void **)((char *)s0 + 0x64); \
+        v0 = *(s16 *)((char *)a0 + 0xE); \
+        v1 = *(s16 *)((char *)s0 + 0xE); \
+        if ((v0 - 0x80) < v1) { \
+            *(s16 *)((char *)a0 + 0xFE) = 1; \
+            sp[0] = *(u16 *)((char *)s0 + 0x6); \
+            sp[1] = *(u16 *)((char *)s0 + 0xA) - 0x40; \
+            sp[2] = *(u16 *)((char *)s0 + 0xE); \
+            result = func_80143BDC(sp); \
+            if (result) { \
+                v3 = *(void **)((char *)result + 0xCC); \
+                *(s16 *)((char *)v3 + 0x1A) = 0x5000; \
+                *(s16 *)((char *)v3 + 0x18) = 0x5000; \
+            } \
+            func_80187558(s0); \
+            func_8002D4C8(0x4DC, 0); \
+            func_8012C218(s0); \
+        } \
+    }
+
 #endif