diff --git a/src/ov_SC01_009/ov_SC01_009_jr_8017BE9C.c b/src/ov_SC01_009/ov_SC01_009_jr_8017BE9C.c
index e3460ff54..71d387084 100644
--- a/src/ov_SC01_009/ov_SC01_009_jr_8017BE9C.c
+++ b/src/ov_SC01_009/ov_SC01_009_jr_8017BE9C.c
@@ -3277,7 +3277,7 @@ void func_8017D0BC(void *a0) {
 }
 
 
-extern void func_8017D120(s32 arg0, s32 arg1);
+extern void func_8017D120();
 extern s32 D_801274E8;
 
 void func_8017D0F8(s32 arg0) {
@@ -3285,7 +3285,43 @@ void func_8017D0F8(s32 arg0) {
 }
 
 
-INCLUDE_ASM("asm/ov_SC01_009/nonmatchings/ov_SC01_009_jr_8017BE9C", func_8017D120);
+extern s32 func_80012ABC(s32 a0, s32 a1, s32 a2);
+extern s32 func_80012C6C(s32 a0, s32 a1, s32 a2);
+extern void func_80049CAC(s32 a0, s32 a1);
+extern void func_8012F14C(s32 a0, s32 a1, s32 a2);
+
+void func_8017D120(s32 param_1, s16 *param_2) {
+    MATRIX m1;
+    SVECTOR svec_in;
+    SVECTOR svec_out;
+
+    *(s32 *)(param_1 + 0x8)  = (s16)func_80012C6C((s32)*(s16 *)(param_1 + 0x8),  (s32)*(s16 *)(param_1 + 0xC),  0xa);
+    *(s32 *)(param_1 + 0x10) = (s16)func_80012C6C((s32)*(s16 *)(param_1 + 0x10), (s32)*(s16 *)(param_1 + 0x14), 0xa);
+    *(s16 *)(param_1 + 0x18) = func_80012ABC((s32)*(s16 *)(param_1 + 0x18), (s32)*(s16 *)(param_1 + 0x20), 0xa);
+    *(s16 *)(param_1 + 0x1A) = func_80012ABC((s32)*(s16 *)(param_1 + 0x1A), (s32)*(s16 *)(param_1 + 0x22), 0xa);
+    *(s16 *)(param_1 + 0x1C) = func_80012ABC((s32)*(s16 *)(param_1 + 0x1C), (s32)*(s16 *)(param_1 + 0x24), 0xa);
+    *(s16 *)(param_1 + 0x28) = func_80012C6C((s32)*(s16 *)(param_1 + 0x28), (s32)*(s16 *)(param_1 + 0x2E), 0xa);
+    *(s16 *)(param_1 + 0x2A) = func_80012C6C((s32)*(s16 *)(param_1 + 0x2A), (s32)*(s16 *)(param_1 + 0x30), 0xa);
+    *(s16 *)(param_1 + 0x2C) = func_80012C6C((s32)*(s16 *)(param_1 + 0x2C), (s32)*(s16 *)(param_1 + 0x32), 0xa);
+
+    *(s32 *)(param_1 + 0x48) = (s32)*(s16 *)(param_1 + 0x28) + (s32)param_2[0];
+    *(s32 *)(param_1 + 0x4C) = (s32)*(s16 *)(param_1 + 0x2A) + (s32)param_2[1];
+    *(s32 *)(param_1 + 0x50) = (s32)*(s16 *)(param_1 + 0x2C) + (s32)param_2[2];
+    func_80049CAC(param_1 + 0x18, (s32)&m1);
+
+    m1.t[0] = *(s16 *)(param_1 + 0x28) + param_2[0];
+    m1.t[1] = *(s16 *)(param_1 + 0x2A) + param_2[1];
+    m1.t[2] = *(s16 *)(param_1 + 0x2C) + param_2[2];
+    svec_in.vx = 0;
+    svec_in.vy = 0;
+    svec_in.vz = *(s32 *)(param_1 + 0x10);
+    ((void (*)(s32, s32, s32))func_8012F14C)((s32)&m1, (s32)&svec_in, (s32)&svec_out);
+
+    *(s32 *)(param_1 + 0x3C) = (s32)svec_out.vx;
+    *(s32 *)(param_1 + 0x40) = (s32)svec_out.vy;
+    *(s32 *)(param_1 + 0x44) = (s32)svec_out.vz;
+}
+
 
 s32 func_8017D2B8(s32 arg0) {
         if (arg0 == 0x2DA) {
diff --git a/src/ov_SC01_009/ov_SC01_009_jr_8017E378.c b/src/ov_SC01_009/ov_SC01_009_jr_8017E378.c
index 326824988..3e4c7aca4 100644
--- a/src/ov_SC01_009/ov_SC01_009_jr_8017E378.c
+++ b/src/ov_SC01_009/ov_SC01_009_jr_8017E378.c
@@ -2671,7 +2671,7 @@ extern void func_8017CEFC(void *a0);
 extern s32 func_8017CF38(s32 a0);
 extern void (*D_801863F4[])(void);
 extern void func_8017D0BC(void *a0);
-extern void func_8017D120(s32 arg0, s32 arg1);
+extern void func_8017D120();
 extern s32 D_801274E8;
 extern void func_8017D0F8(s32 arg0);
 extern s32 func_8017D2B8(s32 arg0);
diff --git a/src/ov_SC01_009/ov_SC01_009_jr_8017E590.c b/src/ov_SC01_009/ov_SC01_009_jr_8017E590.c
index dad5afb03..e8546da14 100644
--- a/src/ov_SC01_009/ov_SC01_009_jr_8017E590.c
+++ b/src/ov_SC01_009/ov_SC01_009_jr_8017E590.c
@@ -2671,7 +2671,7 @@ extern void func_8017CEFC(void *a0);
 extern s32 func_8017CF38(s32 a0);
 extern void (*D_801863F4[])(void);
 extern void func_8017D0BC(void *a0);
-extern void func_8017D120(s32 arg0, s32 arg1);
+extern void func_8017D120();
 extern s32 D_801274E8;
 extern void func_8017D0F8(s32 arg0);
 extern s32 func_8017D2B8(s32 arg0);
diff --git a/src/ov_SC01_009/ov_SC01_009_jr_8018057C.c b/src/ov_SC01_009/ov_SC01_009_jr_8018057C.c
index 4e8459c25..b7e344129 100644
--- a/src/ov_SC01_009/ov_SC01_009_jr_8018057C.c
+++ b/src/ov_SC01_009/ov_SC01_009_jr_8018057C.c
@@ -2672,7 +2672,7 @@ extern void func_8017CEFC(void *a0);
 extern s32 func_8017CF38(s32 a0);
 extern void (*D_801863F4[])(void);
 extern void func_8017D0BC(void *a0);
-extern void func_8017D120(s32 arg0, s32 arg1);
+extern void func_8017D120();
 extern s32 D_801274E8;
 extern void func_8017D0F8(s32 arg0);
 extern s32 func_8017D2B8(s32 arg0);