diff --git a/src/boss/mar/AFC4.c b/src/boss/mar/AFC4.c
index e7ea9c34d4..df51836e07 100644
--- a/src/boss/mar/AFC4.c
+++ b/src/boss/mar/AFC4.c
@@ -1,6 +1,8 @@
 // SPDX-License-Identifier: AGPL-3.0-or-later
 #include <stage.h>
 
+#include "mar.h"
+
 extern Dialogue g_Dialogue;
 
 #include "../../st/cutscene_unk1.h"
@@ -21,4 +23,49 @@ INCLUDE_ASM("boss/mar/nonmatchings/AFC4", func_us_8018B74C);
 
 INCLUDE_ASM("boss/mar/nonmatchings/AFC4", EntityMariaCutscene);
 
-INCLUDE_ASM("boss/mar/nonmatchings/AFC4", func_us_8018C90C);
+// func_psp_092467F8
+void func_us_8018C90C(Entity* self) {
+    Entity* player;
+    Tilemap* tilemap; // unused but shows up in the psp code.
+
+    tilemap = &g_Tilemap;
+    player = &PLAYER;
+
+    switch (self->step) {
+    case 0:
+        InitializeEntity(D_80180A60);
+        D_8003C8B8 = 0;
+        g_unkGraphicsStruct.unk0 = 1;
+        g_Player.padSim = PAD_RIGHT;
+        g_Player.D_80072EFC = 1;
+        break;
+    case 1:
+        if ((player->posX.i.hi >= 0x21) && !(g_CutsceneFlags & 1)) {
+            g_CutsceneFlags |= 1;
+        }
+        if (player->posX.i.hi >= 0xB1) {
+            g_Player.padSim = PAD_LEFT;
+            self->step++;
+        } else {
+            g_Player.padSim = PAD_RIGHT;
+        }
+        g_Player.D_80072EFC = 1;
+        break;
+    case 2:
+        if (g_CutsceneFlags & 2) {
+            D_8003C8B8 = 1;
+
+            if (g_unkGraphicsStruct.unk0) {
+                g_unkGraphicsStruct.unk0 = 0;
+            }
+
+            DestroyEntity(self);
+            g_Statues[LEFT_STATUE] ^= 1; // suspicious, everywhere else we're
+                                         // treating this like a boolean.
+        }
+
+        g_Player.padSim = 0;
+        g_Player.D_80072EFC = 1;
+        break;
+    }
+}
diff --git a/src/boss/mar/mar.h b/src/boss/mar/mar.h
index b571338bba..50f2993d3d 100644
--- a/src/boss/mar/mar.h
+++ b/src/boss/mar/mar.h
@@ -45,5 +45,6 @@ typedef enum Statues {
 extern u16 g_eInitGeneric2[];
 extern s32 D_800973FC;
 extern u16 g_Statues[];
+extern u16 D_80180A60[];
 
 #endif