diff --git a/include/ac_ev_ghost.h b/include/ac_ev_ghost.h
index c093321e..3c89a71a 100644
--- a/include/ac_ev_ghost.h
+++ b/include/ac_ev_ghost.h
@@ -3,11 +3,27 @@
 
 #include "types.h"
 #include "m_actor.h"
+#include "ac_npc.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+typedef struct ev_ghost_s EV_GHOST_ACTOR;
+
+struct ev_ghost_s {
+  /* 0x000 */ NPC_ACTOR npc_class;
+  /* 0x994 */ void* think_proc;
+  /* 0x998 */ int msg_no;
+  /* 0x99C */ mActor_name_t give_item;
+  /* 0x99E */ s16 bye_bye_angle;
+  /* 0x9A0 */ u8 bye_bye_timer;
+  /* 0x9A1 */ u8 bye_bye_scale_timer;
+  /* 0x9A2 */ u8 bye_bye_transparency_delay_timer;
+  /* 0x9A3 */ u8 think_act;
+  /* 0x9A4 */
+};
+
 extern ACTOR_PROFILE Ev_Ghost_Profile;
 
 #ifdef __cplusplus
diff --git a/include/m_event.h b/include/m_event.h
index 8e7c8bfb..d5c0f840 100644
--- a/include/m_event.h
+++ b/include/m_event.h
@@ -364,12 +364,19 @@ typedef struct ghost_spirit_block_data_s {
 } mEv_gst_hitodama_block_c;
 
 #define mEv_GHOST_FLAG_ACTIVE 0x4000 // TODO: do these live in the ghost actor itself?
+#define mEv_GHOST_FLAG_HITODAMA_EXIST 0x8000
 typedef struct ghost_common_s {
   mEv_gst_hitodama_block_c hitodama_block_data;
   u16 flags;
   u8 _0C[0x2C - 0x0C];
 } mEv_gst_common_c;
 
+typedef struct ghost_event_s {
+  u16 violent_person_str_no;
+  u16 flags;
+  lbRTC_ymd_c renew_time;
+} mEv_gst_c;
+
 #define mEv_DESGINER_NUM 3
 
 typedef struct kabu_peddler_event_s {
diff --git a/src/ac_ev_ghost.c b/src/ac_ev_ghost.c
new file mode 100644
index 00000000..c3966a12
--- /dev/null
+++ b/src/ac_ev_ghost.c
@@ -0,0 +1,7 @@
+#include "ac_ev_ghost.h"
+
+#include "m_event.h"
+#include "m_common_data.h"
+
+#include "../src/ac_ev_ghost_talk.c_inc"
+#include "../src/ac_ev_ghost_schedule.c_inc"
diff --git a/src/ac_ev_ghost_schedule.c_inc b/src/ac_ev_ghost_schedule.c_inc
new file mode 100644
index 00000000..e69de29b
diff --git a/src/ac_ev_ghost_talk.c_inc b/src/ac_ev_ghost_talk.c_inc
new file mode 100644
index 00000000..e69de29b
diff --git a/src/ac_set_ovl_insect.c b/src/ac_set_ovl_insect.c
index e62e9e52..7fd34e5f 100644
--- a/src/ac_set_ovl_insect.c
+++ b/src/ac_set_ovl_insect.c
@@ -1337,7 +1337,7 @@ static int aSOI_ins_renew_check_range_table(SET_MANAGER* set_manager, aSOI_insec
     spawn_type = aSOI_SPAWN_TYPE_ISLAND;
   }
   else {
-    mEv_gst_common_c* ghost_common = (mEv_gst_common_c*)mEv_get_common_area(0x72, 0x37); // TODO: definitions for event type, event id
+    mEv_gst_common_c* ghost_common = (mEv_gst_common_c*)mEv_get_common_area(mEv_EVENT_GHOST, 0x37); // TODO: definitions for event type, event id
     if (ghost_common != NULL && (ghost_common->flags & mEv_GHOST_FLAG_ACTIVE) != 0 &&
         aSOI_check_hitodama_set_block(set_manager, &ghost_common->hitodama_block_data) == TRUE
     ) {