diff --git a/config/rel_slices.yml b/config/rel_slices.yml
index c6df974f..dda16f0d 100644
--- a/config/rel_slices.yml
+++ b/config/rel_slices.yml
@@ -34,6 +34,10 @@ m_banti.c:
     .rodata: [0x80641388, 0x806413E0]
     .data: [0x8064F548, 0x8064F658]
     .bss: [0x8125A830, 0x8125AC80]
+m_bg_item.c:
+    .text: [0x80378858, 0x803789F8]
+    .rodata: [0x806413E0, 0x806413F0]
+    .bss: [0x81263080, 0x81263088]
 m_calendar.c:
     .text: [0x8037D190, 0x8037DA54]
 m_cockroach.c:
diff --git a/include/m_bg_item.h b/include/m_bg_item.h
index 3129b4c5..e90fd1c0 100644
--- a/include/m_bg_item.h
+++ b/include/m_bg_item.h
@@ -2,14 +2,22 @@
 #define M_BG_ITEM_H
 
 #include "types.h"
+#include "m_actor.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+extern ACTOR* mBI_search_bg_item(Actor_info* info);
+extern void mBI_make_bg_item(GAME_PLAY* play);
+extern void mBI_change_bg_item(GAME_PLAY* play);
 extern void mBI_ct();
 extern void mBI_move(GAME_PLAY* play);
 
+typedef void (*BI_PROC)(GAME_PLAY*);
+
+extern BI_PROC mBI_make_proc;
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/rel/m_bg_item.c b/rel/m_bg_item.c
new file mode 100644
index 00000000..8263d7a3
--- /dev/null
+++ b/rel/m_bg_item.c
@@ -0,0 +1,55 @@
+#include "m_bg_item.h"
+
+#include "m_common_data.h"
+#include "m_name_table.h"
+
+BI_PROC mBI_make_proc;
+
+
+ACTOR* mBI_search_bg_item(Actor_info* info){
+    static const s16 name_data[] = {
+        0x4f, 0x1, 0x50,0x51
+    };
+    
+    int i;
+    for( i = 0; i < 4; i++){
+        if(Actor_info_name_search(info,name_data[i], ACTOR_PART_ITEM) != 0){
+            return;
+        }
+    }
+}
+
+void mBI_make_bg_item(GAME_PLAY* play){
+
+
+    if(mBI_search_bg_item(&play->actor_info) == NULL){
+
+        Actor_info_make_actor(&play->actor_info, &play->game, Common_Get(bg_item_profile),0,
+            0.0f,0.0f,0,0,0 ,-1, -1,-1, EMPTY_NO,-1,-1,-1);
+        mBI_make_proc = NULL;
+    }
+}
+
+void mBI_change_bg_item(GAME_PLAY* play){
+
+    ACTOR* actor = mBI_search_bg_item(&play->actor_info);
+    
+    if(actor != NULL){
+        Actor_delete(actor);
+        mBI_make_proc = mBI_make_bg_item;
+        Common_Set(bg_item_profile, Common_Get(time.bgitem_profile));
+    }
+}
+
+void mBI_ct(){
+
+    mBI_make_proc = NULL;
+    
+}
+
+void mBI_move(GAME_PLAY* play){
+
+    if(mBI_make_proc != NULL){
+        mBI_make_proc(play);
+    }
+}
\ No newline at end of file