diff --git a/config/dedup.us.yaml b/config/dedup.us.yaml
index 81d01aa14..175170c11 100644
--- a/config/dedup.us.yaml
+++ b/config/dedup.us.yaml
@@ -14866,3 +14866,10 @@ groups:
     func: DEFINE_func_8018AD3C
     vram: 0x8018AD3C
     binaries: [ov_SC04_018, ov_SC04_019]
+  - id: E_func_80187354
+    tier: h_exact
+    hash: de9edbad022910d06cd17328fff92a2fd0785082
+    source: src/shared/engine_core.h
+    func: DEFINE_func_80187354
+    vram: 0x80187354
+    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 34b2b0eeb..34838c147 100644
--- a/src/ov_SC02_000/ov_SC02_000_jr_8018173C.c
+++ b/src/ov_SC02_000/ov_SC02_000_jr_8018173C.c
@@ -5054,28 +5054,7 @@ void func_801872D8(int param_1) {
 
 #include "common.h"
 
-extern s32 D_8018F424[3];
-extern s32 D_8018F430[];
-extern s16 D_8018F3E4[];
-
-extern void func_80188C0C(void *a0, s16 a1);
-
-void func_80187354(s32 a0) {
-    s16 buf[3];
-    s16 vec[3];
-    s32 i;
-
-    buf[0] = *(u16 *)(a0 + 0x6) - 0xE1;
-    buf[1] = *(u16 *)(a0 + 0xA) + 0x40;
-    buf[2] = *(u16 *)(a0 + 0xE) - 0x75;
-
-    for (i = 0; i < 16; i++) {
-        vec[1] = buf[1] + D_8018F424[rand() % 3];
-        vec[2] = buf[2] + D_8018F430[rand() % 5];
-        vec[0] = buf[0] + i * 0x20;
-        func_80188C0C(vec, *(s16 *)((s32)D_8018F3E4 + i * 4));
-    }
-}
+DEFINE_func_80187354()  /* dedup: shared engine-core @0x80187354 (src/shared) */
 
 
 INCLUDE_ASM("asm/ov_SC02_000/nonmatchings/ov_SC02_000_jr_8018173C", func_80187480);
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 14c42c2a0..1a58c9d0f 100644
--- a/src/ov_SC02_003/ov_SC02_003_jr_8018173C.c
+++ b/src/ov_SC02_003/ov_SC02_003_jr_8018173C.c
@@ -3370,7 +3370,7 @@ void func_801872D8(int param_1) {
 }
 
 
-INCLUDE_ASM("asm/ov_SC02_003/nonmatchings/ov_SC02_003_jr_8018173C", func_80187354);
+DEFINE_func_80187354()  /* dedup: shared engine-core @0x80187354 (src/shared) */
 
 INCLUDE_ASM("asm/ov_SC02_003/nonmatchings/ov_SC02_003_jr_8018173C", func_80187480);
 
diff --git a/src/shared/engine_core.h b/src/shared/engine_core.h
index b0b56140a..de19d8e8c 100644
--- a/src/shared/engine_core.h
+++ b/src/shared/engine_core.h
@@ -61138,6 +61138,26 @@
         func_8018A168(0x474, 0x4B0); \
     }
 
+#define DEFINE_func_80187354() \
+    extern s32 D_8018F424[3]; \
+    extern s32 D_8018F430[]; \
+    extern s16 D_8018F3E4[]; \
+    extern void func_80188C0C(void *a0, s16 a1); \
+    void func_80187354(s32 a0) { \
+        s16 buf[3]; \
+        s16 vec[3]; \
+        s32 i; \
+        buf[0] = *(u16 *)(a0 + 0x6) - 0xE1; \
+        buf[1] = *(u16 *)(a0 + 0xA) + 0x40; \
+        buf[2] = *(u16 *)(a0 + 0xE) - 0x75; \
+        for (i = 0; i < 16; i++) { \
+            vec[1] = buf[1] + D_8018F424[rand() % 3]; \
+            vec[2] = buf[2] + D_8018F430[rand() % 5]; \
+            vec[0] = buf[0] + i * 0x20; \
+            func_80188C0C(vec, *(s16 *)((s32)D_8018F3E4 + i * 4)); \
+        } \
+    }
+
 #endif
 
 #define DEFINE_func_80128EA8() \
@@ -151681,4 +151701,24 @@
         func_8018A168(0x474, 0x4B0); \
     }
 
+#define DEFINE_func_80187354() \
+    extern s32 D_8018F424[3]; \
+    extern s32 D_8018F430[]; \
+    extern s16 D_8018F3E4[]; \
+    extern void func_80188C0C(void *a0, s16 a1); \
+    void func_80187354(s32 a0) { \
+        s16 buf[3]; \
+        s16 vec[3]; \
+        s32 i; \
+        buf[0] = *(u16 *)(a0 + 0x6) - 0xE1; \
+        buf[1] = *(u16 *)(a0 + 0xA) + 0x40; \
+        buf[2] = *(u16 *)(a0 + 0xE) - 0x75; \
+        for (i = 0; i < 16; i++) { \
+            vec[1] = buf[1] + D_8018F424[rand() % 3]; \
+            vec[2] = buf[2] + D_8018F430[rand() % 5]; \
+            vec[0] = buf[0] + i * 0x20; \
+            func_80188C0C(vec, *(s16 *)((s32)D_8018F3E4 + i * 4)); \
+        } \
+    }
+
 #endif