diff --git a/config/rel_slices.yml b/config/rel_slices.yml
index fcbcb0b8..3f1063b4 100644
--- a/config/rel_slices.yml
+++ b/config/rel_slices.yml
@@ -689,6 +689,10 @@ ac_dump.c:
     .text: [0x805AE704, 0x805AECE8]
     .rodata: [0x8064A7E8, 0x8064A808]
     .data: [0x806C5018, 0x806C5120]
+ac_fallS.c:
+    .text: [0x805AECE8, 0x805AEF84]
+    .rodata: [0x8064A808, 0x8064A830]
+    .data: [0x806C5120, 0x806C5148]
 ac_kago.c:
     .text: [0x805B1A08, 0x805B1D50]
     .data: [0x806C5750, 0x806C57A8]
diff --git a/include/ac_fallS.h b/include/ac_fallS.h
index 078581be..24624c61 100644
--- a/include/ac_fallS.h
+++ b/include/ac_fallS.h
@@ -1,13 +1,16 @@
 #ifndef AC_FALLS_H
 #define AC_FALLS_H
 
-#include "types.h"
-#include "m_actor.h"
+#include "ac_structure.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+typedef struct actor_fall_south_s{
+    STRUCTURE_ACTOR structure_class;
+}FALLS_ACTOR;
+
 extern ACTOR_PROFILE FallS_Profile;
 
 #ifdef __cplusplus
diff --git a/include/ac_fallSESW.h b/include/ac_fallSESW.h
index 6284c5b1..5300a108 100644
--- a/include/ac_fallSESW.h
+++ b/include/ac_fallSESW.h
@@ -1,13 +1,16 @@
 #ifndef AC_FALLSESW_H
 #define AC_FALLSESW_H
 
-#include "types.h"
-#include "m_actor.h"
+#include "ac_structure.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+typedef struct actor_falls_south_east_west{
+    STRUCTURE_ACTOR structure_class;
+}FALLSEW_ACTOR;
+
 extern ACTOR_PROFILE FallSESW_Profile;
 
 #ifdef __cplusplus
diff --git a/include/ac_tent.h b/include/ac_tent.h
index c562a861..f43119c8 100644
--- a/include/ac_tent.h
+++ b/include/ac_tent.h
@@ -7,9 +7,9 @@
 extern "C" {
 #endif
 
-typedef struct actor_tent_s{
+typedef struct TENT_ACTOR_s{
     STRUCTURE_ACTOR structure_class;
-}ACTOR_TENT;
+}TENT_ACTOR;
 
 extern ACTOR_PROFILE Tent_Profile;
 
diff --git a/include/sys_math3d.h b/include/sys_math3d.h
index 3c2d0a89..ef90a2bf 100644
--- a/include/sys_math3d.h
+++ b/include/sys_math3d.h
@@ -44,6 +44,7 @@ extern int Math3D_sphereVsPipe_cl(Math3D_sphere_c* s, Math3D_pipe_c* c, f32* in)
 extern int Math3D_pipeVsPipe_cl(Math3D_pipe_c* a, Math3D_pipe_c* b , f32* d);
 extern int Math3D_sphereCrossTriangle3_cp(Math3D_sphere_c* s, Math3D_triangle_c* tri, xyz_t* ip);
 extern int Math3D_pipeCrossTriangle_cp(Math3D_pipe_c* c,Math3D_triangle_c* tri, xyz_t* in);
+extern void Math3DVectorProduct2Vec(const xyz_t* a, xyz_t* b, xyz_t* ret);
 
 extern xyz_t ZeroVec;
 extern s_xyz ZeroSVec;
diff --git a/src/ac_fallS.c b/src/ac_fallS.c
new file mode 100644
index 00000000..ace260b4
--- /dev/null
+++ b/src/ac_fallS.c
@@ -0,0 +1,33 @@
+#include "ac_fallS.h"
+#include "m_name_table.h"
+#include "evw_anime.h"
+#include "m_common_data.h"
+#include "m_lib.h"
+#include "audio.h"
+#include "sys_math3d.h"
+#include "sys_matrix.h"
+
+extern Gfx obj_fallS_model[];
+extern Gfx obj_fallS_rainbowT_model[];
+extern EVW_ANIME_DATA obj_fallS_evw_anime;
+
+static void aFLS_actor_move(ACTOR* actor, GAME* game);
+static void aFLS_actor_draw(ACTOR* actor, GAME* game);
+
+ACTOR_PROFILE FallS_Profile = {
+    mAc_PROFILE_FALLS,
+    ACTOR_PART_ITEM,
+    ACTOR_STATE_TA_SET,
+    WATERFALL_SOUTH,
+    ACTOR_OBJ_BANK_KEEP,
+    sizeof(FALLS_ACTOR),
+    NONE_ACTOR_PROC,
+    NONE_ACTOR_PROC,
+    aFLS_actor_move,
+    aFLS_actor_draw,
+    NULL,
+};
+
+#include "../src/ac_fallS_move.c_inc"
+
+#include "../src/ac_fallS_draw.c_inc"
diff --git a/src/ac_fallS_draw.c_inc b/src/ac_fallS_draw.c_inc
new file mode 100644
index 00000000..51a7e8ae
--- /dev/null
+++ b/src/ac_fallS_draw.c_inc
@@ -0,0 +1,61 @@
+
+void aFLS_actor_draw(ACTOR* actor, GAME* game) {
+    static const xyz_t shape_norm_vec = {0.0f, 0.0f, 1.0f};
+    GAME_PLAY* play = (GAME_PLAY*)game;
+    GRAPH* graph = game->graph;
+    Gfx* gfx;
+    int a;
+    f32 vecLen;
+    f32 angle;
+    xyz_t bboard;
+    xyz_t l;
+
+    _texture_z_light_fog_prim_xlu(graph);
+
+    OPEN_DISP(graph);
+
+    {
+        Gfx* gfx;
+        gfx = NOW_POLY_XLU_DISP;
+        gSPMatrix(gfx++, _Matrix_to_Mtx_new(graph), G_MTX_NOPUSH | G_MTX_LOAD | G_MTX_MODELVIEW);
+
+        NOW_POLY_XLU_DISP = gfx;
+    }
+    Evw_Anime_Set(play, &obj_fallS_evw_anime);
+
+    gfx = NOW_POLY_XLU_DISP;
+    gSPDisplayList(gfx++, obj_fallS_model);
+
+    if (Common_Get(rainbow_opacity) > 0.0f) {
+        a = (256.0f * Common_Get(rainbow_opacity));
+
+        if (a > 255) {
+            a = 255;
+        }
+        bboard.x = play->billboard_matrix.mf[2][0];
+        bboard.y = play->billboard_matrix.mf[2][1];
+        bboard.z = play->billboard_matrix.mf[2][2];
+
+        Math3DVectorProduct2Vec(&shape_norm_vec, &bboard, &l);
+
+        vecLen = Math3DVecLength(&l);
+
+        if (vecLen >= 0.0000001f) {
+            xyz_t_mult_v(&l, 1.0f / vecLen);
+            angle = facos(shape_norm_vec.z * bboard.z + ((shape_norm_vec.x * bboard.x) + shape_norm_vec.y * bboard.y));
+
+            Matrix_translate(actor->world.position.x, actor->world.position.y, actor->world.position.z, FALSE);
+            Matrix_RotateVector(RAD2SHORTANGLE(angle), &l, TRUE);
+            Matrix_scale(actor->scale.x, actor->scale.y, actor->scale.z, TRUE);
+
+            gSPMatrix(gfx++, _Matrix_to_Mtx_new(graph), G_MTX_NOPUSH | G_MTX_LOAD | G_MTX_MODELVIEW);
+            gDPSetRenderMode(gfx++, G_RM_FOG_SHADE_A, G_RM_XLU_SURF2);
+            gDPSetEnvColor(gfx++, 255, 255, 255, a);
+            gSPLoadGeometryMode(gfx++, G_SHADE | G_FOG | G_SHADING_SMOOTH);
+            gSPDisplayList(gfx++, obj_fallS_rainbowT_model);
+        }
+    }
+
+    NOW_POLY_XLU_DISP = gfx;
+    CLOSE_DISP(graph);
+}
\ No newline at end of file
diff --git a/src/ac_fallS_move.c_inc b/src/ac_fallS_move.c_inc
new file mode 100644
index 00000000..daadde13
--- /dev/null
+++ b/src/ac_fallS_move.c_inc
@@ -0,0 +1,9 @@
+void aFLS_actor_move(ACTOR* actor, GAME*) {
+    xyz_t pos;
+
+    xyz_t_move(&pos, &actor->world.position);
+
+    pos.y += 40.0f;
+
+    sAdo_OngenPos((u32)actor, 12, &pos);
+}
diff --git a/src/ac_tent.c b/src/ac_tent.c
index d47b00a7..647b7937 100644
--- a/src/ac_tent.c
+++ b/src/ac_tent.c
@@ -17,7 +17,7 @@ ACTOR_PROFILE Tent_Profile = {
     ACTOR_STATE_TA_SET,
     TENT,
     ACTOR_OBJ_BANK_KEEP,
-    sizeof(ACTOR_TENT),
+    sizeof(TENT_ACTOR),
     aTnt_actor_ct,
     aTnt_actor_dt,
     aTnt_actor_init,
@@ -56,8 +56,8 @@ static void aTnt_SetBgOffset(ACTOR* actor, int offset);
 static int aTnt_ControlLight(ACTOR* actor);
 
 
-void aTnt_actor_ct(ACTOR* actor, GAME* game) {
-    ACTOR_TENT* tent = (ACTOR_TENT*)actor;
+static void aTnt_actor_ct(ACTOR* actor, GAME* game) {
+    TENT_ACTOR* tent = (TENT_ACTOR*)actor;
     f32 t;
 
     aTnt_ChangeFg(actor, 1);
@@ -73,11 +73,11 @@ void aTnt_actor_ct(ACTOR* actor, GAME* game) {
     tent->structure_class.arg0_f = t;
 }
 
-void aTnt_actor_dt(ACTOR* actor, GAME* game) { 
+static void aTnt_actor_dt(ACTOR* actor, GAME* game) { 
     aTnt_ChangeFg(actor, 0); 
 }
 
-void aTnt_ChangeFg(ACTOR* actor, int type) {
+static void aTnt_ChangeFg(ACTOR* actor, int type) {
     xyz_t pos = actor->world.position;
     mActor_name_t* name;
 
@@ -112,7 +112,7 @@ void aTnt_ChangeFg(ACTOR* actor, int type) {
     }
 }
 
-void aTnt_SetBgOffset(ACTOR* actor, int type) {
+static void aTnt_SetBgOffset(ACTOR* actor, int type) {
     static mCoBG_OffsetTable_c height_table_ct[] = {
         {100, 3, 1, 1, 7, 7, 0},
         {100, 10, 10, 10, 10, 10, 0},
@@ -141,7 +141,7 @@ void aTnt_SetBgOffset(ACTOR* actor, int type) {
     }
 }
 
-void aTnt_rewrite_out_data(ACTOR* actor, GAME_PLAY* play) {
+static void aTnt_rewrite_out_data(ACTOR* actor, GAME_PLAY* play) {
     Door_data_c* door_data = Common_GetPointer(structure_exit_door_data);
 
     if (play->fb_wipe_mode == 0) {
@@ -167,7 +167,7 @@ void aTnt_rewrite_out_data(ACTOR* actor, GAME_PLAY* play) {
     }
 }
 
-int aTnt_check_player(ACTOR* actor, GAME_PLAY* play) {
+static int aTnt_check_player(ACTOR* actor, GAME_PLAY* play) {
     u16 y;
     f32 xOffs;
     f32 zOffs;
@@ -187,7 +187,7 @@ int aTnt_check_player(ACTOR* actor, GAME_PLAY* play) {
     return 0;
 }
 
-void aTnt_wait(STRUCTURE_ACTOR* actor, GAME_PLAY* play) {
+static void aTnt_wait(STRUCTURE_ACTOR* actor, GAME_PLAY* play) {
     xyz_t pos;
 
     if (actor == GET_PLAYER_ACTOR_NOW()->get_door_label_proc(gamePT)) {
@@ -201,24 +201,24 @@ void aTnt_wait(STRUCTURE_ACTOR* actor, GAME_PLAY* play) {
     }
 }
 
-void aTnt_SetupAction(ACTOR* actor, int type) {
+static void aTnt_SetupAction(ACTOR* actor, int type) {
     static aSTR_MOVE_PROC process[] = {
         aTnt_wait,
     };
-    ACTOR_TENT* tent = (ACTOR_TENT*)actor;
+    TENT_ACTOR* tent = (TENT_ACTOR*)actor;
 
     tent->structure_class.action_proc = process[type];
     tent->structure_class.action = type;
 }
 
-int aTnt_ControlLight(ACTOR*) {
+static int aTnt_ControlLight(ACTOR*) {
     if (Common_Get(time.now_sec) >= 18000 && Common_Get(time.now_sec) < 64800) {
         return 0;
     }
     return 1;
 }
 
-void aTnt_actor_move(ACTOR* actor, GAME* game) {
+static void aTnt_actor_move(ACTOR* actor, GAME* game) {
     STRUCTURE_ACTOR* tent = (STRUCTURE_ACTOR*)actor;
     GAME_PLAY* play = (GAME_PLAY*)game;
 
@@ -244,14 +244,14 @@ void aTnt_actor_move(ACTOR* actor, GAME* game) {
     }
 }
 
-void aTnt_actor_init(ACTOR* actor, GAME* game) {
+static void aTnt_actor_init(ACTOR* actor, GAME* game) {
     mFI_SetFG_common(DUMMY_TENT, actor->home.position, 0);
     aTnt_actor_move(actor, game);
     actor->mv_proc = aTnt_actor_move;
 }
 
-Gfx* aTnt_MakeWindowPrimDisplayList(ACTOR* actor, GAME* game) {
-    ACTOR_TENT* tent = (ACTOR_TENT*)actor;
+static Gfx* aTnt_MakeWindowPrimDisplayList(ACTOR* actor, GAME* game) {
+    TENT_ACTOR* tent = (TENT_ACTOR*)actor;
 
     GRAPH* graph = game->graph;
     Gfx* gfx = GRAPH_ALLOC_TYPE(graph, Gfx, 2);
@@ -270,7 +270,7 @@ Gfx* aTnt_MakeWindowPrimDisplayList(ACTOR* actor, GAME* game) {
 
 extern Gfx obj_s_tent_model[];
 
-void aTnt_actor_draw(ACTOR* actor, GAME* game) {
+static void aTnt_actor_draw(ACTOR* actor, GAME* game) {
     Mtx* m = _Matrix_to_Mtx_new(game->graph);
     Gfx* gfx = aTnt_MakeWindowPrimDisplayList(actor, game);