diff --git a/asm/non_matching/manager22/Manager22_Main.inc b/asm/non_matching/manager22/Manager22_Main.inc
deleted file mode 100644
index 7ff6c934..00000000
--- a/asm/non_matching/manager22/Manager22_Main.inc
+++ /dev/null
@@ -1,185 +0,0 @@
-	.syntax unified
-	push {r4, r5, r6, lr}
-	adds r5, r0, #0
-	ldr r4, _0805B964 @ =gArea
-	ldrb r0, [r4, #0xc]
-	cmp r0, #0
-	bne _0805B90A
-	bl sub_0801E104
-	ldr r2, _0805B968 @ =gScreen
-	ldrh r1, [r2]
-	ldr r0, _0805B96C @ =0x0000D7FF
-	ands r0, r1
-	strh r0, [r2]
-	bl DeleteThisEntity
-_0805B90A:
-	ldrb r2, [r5, #0xc]
-	cmp r2, #0
-	bne _0805B934
-	movs r0, #1
-	strb r0, [r5, #0xc]
-	ldrb r1, [r5, #0x10]
-	movs r0, #0x20
-	orrs r0, r1
-	strb r0, [r5, #0x10]
-	movs r0, #0x11
-	strb r0, [r5, #0xe]
-	str r2, [r5, #0x20]
-	adds r0, r5, #0
-	movs r1, #6
-	bl SetDefaultPriority
-	bl sub_0801E120
-	ldrb r0, [r5, #0xe]
-	bl sub_0801E154
-_0805B934:
-	ldr r0, _0805B970 @ =gMain
-	ldrb r0, [r0, #4]
-	cmp r0, #2
-	bne _0805B952
-	ldr r2, _0805B968 @ =gScreen
-	ldrh r1, [r2]
-	movs r3, #0x80
-	lsls r3, r3, #4
-	adds r0, r3, #0
-	orrs r0, r1
-	strh r0, [r2]
-	bl sub_0805BA78
-	bl sub_0805BAD4
-_0805B952:
-	ldrb r0, [r4, #0xc]
-	cmp r0, #2
-	bne _0805B978
-	ldr r2, _0805B968 @ =gScreen
-	ldrh r1, [r2]
-	ldr r0, _0805B974 @ =0x0000DFFF
-	ands r0, r1
-	strh r0, [r2]
-	b _0805BA6C
-	.align 2, 0
-_0805B964: .4byte gArea
-_0805B968: .4byte gScreen
-_0805B96C: .4byte 0x0000D7FF
-_0805B970: .4byte gMain
-_0805B974: .4byte 0x0000DFFF
-_0805B978:
-	ldr r3, _0805B9A8 @ =gPlayerEntity
-	movs r4, #0x2e
-	ldrsh r0, [r3, r4]
-	ldr r2, _0805B9AC @ =gRoomControls
-	ldrh r1, [r2, #6]
-	subs r0, r0, r1
-	movs r6, #0x32
-	ldrsh r1, [r3, r6]
-	ldrh r2, [r2, #8]
-	subs r1, r1, r2
-	movs r2, #0
-	movs r3, #0
-	bl CheckRectOnScreen
-	cmp r0, #0
-	beq _0805B9B4
-	ldr r2, _0805B9B0 @ =gScreen
-	ldrh r1, [r2]
-	movs r3, #0x80
-	lsls r3, r3, #6
-	adds r0, r3, #0
-	orrs r0, r1
-	b _0805B9BC
-	.align 2, 0
-_0805B9A8: .4byte gPlayerEntity
-_0805B9AC: .4byte gRoomControls
-_0805B9B0: .4byte gScreen
-_0805B9B4:
-	ldr r2, _0805B9E8 @ =gScreen
-	ldrh r1, [r2]
-	ldr r0, _0805B9EC @ =0x0000DFFF
-	ands r0, r1
-_0805B9BC:
-	strh r0, [r2]
-	ldrb r4, [r5, #0xe]
-	ldr r0, _0805B9F0 @ =gPlayerState
-	ldr r0, [r0, #0x30]
-	movs r1, #0x80
-	lsls r1, r1, #0x10
-	ands r0, r1
-	cmp r0, #0
-	beq _0805BA2C
-	ldr r0, _0805B9F4 @ =gArea
-	ldrb r0, [r0, #0xc]
-	cmp r0, #0
-	beq _0805BA2C
-	cmp r4, #0x47
-	bhi _0805B9F8
-	adds r4, #4
-	adds r0, r4, #0
-	bl sub_0801E154
-	movs r0, #0
-	str r0, [r5, #0x20]
-	b _0805BA42
-	.align 2, 0
-_0805B9E8: .4byte gScreen
-_0805B9EC: .4byte 0x0000DFFF
-_0805B9F0: .4byte gPlayerState
-_0805B9F4: .4byte gArea
-_0805B9F8:
-	ldr r0, _0805BA24 @ =gRoomTransition
-	ldr r0, [r0]
-	movs r1, #3
-	ands r0, r1
-	cmp r0, #0
-	bne _0805BA42
-	ldrb r0, [r5, #0xf]
-	adds r0, #0x10
-	strb r0, [r5, #0xf]
-	ldr r1, _0805BA28 @ =gSineTable
-	ldrb r0, [r5, #0xf]
-	lsls r0, r0, #1
-	adds r0, r0, r1
-	movs r6, #0
-	ldrsh r0, [r0, r6]
-	asrs r0, r0, #7
-	str r0, [r5, #0x20]
-	adds r0, r4, r0
-	bl sub_0801E154
-	b _0805BA42
-	.align 2, 0
-_0805BA24: .4byte gRoomTransition
-_0805BA28: .4byte gSineTable
-_0805BA2C:
-	movs r0, #0
-	str r0, [r5, #0x20]
-	cmp r4, #0x11
-	bls _0805BA42
-	subs r4, #4
-	cmp r4, #0x10
-	bhi _0805BA3C
-	movs r4, #0x11
-_0805BA3C:
-	adds r0, r4, #0
-	bl sub_0801E154
-_0805BA42:
-	strb r4, [r5, #0xe]
-	ldr r3, _0805BA70 @ =gPlayerEntity
-	movs r1, #0x2e
-	ldrsh r0, [r3, r1]
-	ldr r2, _0805BA74 @ =gRoomControls
-	movs r6, #0xa
-	ldrsh r1, [r2, r6]
-	subs r0, r0, r1
-	movs r6, #0x32
-	ldrsh r1, [r3, r6]
-	movs r6, #0xc
-	ldrsh r2, [r2, r6]
-	subs r1, r1, r2
-	movs r6, #0x36
-	ldrsh r2, [r3, r6]
-	subs r2, #9
-	adds r1, r1, r2
-	ldr r2, [r5, #0x20]
-	adds r2, r4, r2
-	bl sub_0801E160
-_0805BA6C:
-	pop {r4, r5, r6, pc}
-	.align 2, 0
-_0805BA70: .4byte gPlayerEntity
-_0805BA74: .4byte gRoomControls
-	.syntax divided
diff --git a/asm/non_matching/manager22/UpdateLightLevel.inc b/asm/non_matching/manager22/UpdateLightLevel.inc
deleted file mode 100644
index 643afc33..00000000
--- a/asm/non_matching/manager22/UpdateLightLevel.inc
+++ /dev/null
@@ -1,34 +0,0 @@
-	.syntax unified
-	push {r4, lr}
-	movs r4, #0
-	ldr r2, _0805BBF8 @ =gArea
-	ldrb r0, [r2, #0xc]
-	cmp r0, #0
-	beq _0805BBF2
-	ldr r0, _0805BBFC @ =gRoomVars
-	movs r3, #0xc
-	ldrsh r1, [r0, r3]
-	movs r3, #0xa
-	ldrsh r0, [r2, r3]
-	cmp r1, r0
-	bge _0805BBF2
-	ldr r2, _0805BC00 @ =gScreen
-	ldrh r1, [r2]
-	movs r3, #0x80
-	lsls r3, r3, #4
-	adds r0, r3, #0
-	orrs r0, r1
-	strh r0, [r2]
-	bl sub_0805BA78
-	adds r4, r0, #0
-	cmp r4, #0
-	beq _0805BBF2
-	bl sub_0805BAD4
-_0805BBF2:
-	adds r0, r4, #0
-	pop {r4, pc}
-	.align 2, 0
-_0805BBF8: .4byte gArea
-_0805BBFC: .4byte gRoomVars
-_0805BC00: .4byte gScreen
-	.syntax divided
diff --git a/asm/non_matching/manager22/sub_0805BA78.inc b/asm/non_matching/manager22/sub_0805BA78.inc
deleted file mode 100644
index 394c19ef..00000000
--- a/asm/non_matching/manager22/sub_0805BA78.inc
+++ /dev/null
@@ -1,55 +0,0 @@
-	.syntax unified
-	push {r4, lr}
-	ldr r1, _0805BAA8 @ =gArea
-	movs r0, #0xa
-	ldrsh r3, [r1, r0]
-	ldr r0, _0805BAAC @ =gRoomVars
-	movs r4, #0xc
-	ldrsh r2, [r0, r4]
-	cmp r2, #0
-	bge _0805BA8C
-	movs r2, #0
-_0805BA8C:
-	movs r0, #0x80
-	lsls r0, r0, #1
-	cmp r2, r0
-	ble _0805BA96
-	adds r2, r0, #0
-_0805BA96:
-	cmp r3, r2
-	beq _0805BACE
-	subs r0, r2, r3
-	cmp r0, #0
-	blt _0805BAB0
-	cmp r0, #4
-	bls _0805BAB6
-	b _0805BABA
-	.align 2, 0
-_0805BAA8: .4byte gArea
-_0805BAAC: .4byte gRoomVars
-_0805BAB0:
-	subs r0, r3, r2
-	cmp r0, #4
-	bhi _0805BABA
-_0805BAB6:
-	adds r3, r2, #0
-	b _0805BAC8
-_0805BABA:
-	cmp r2, r3
-	bge _0805BAC2
-	subs r3, #4
-	b _0805BAC8
-_0805BAC2:
-	cmp r2, r3
-	ble _0805BAC8
-	adds r3, #4
-_0805BAC8:
-	strh r3, [r1, #0xa]
-	movs r0, #1
-	b _0805BAD0
-_0805BACE:
-	movs r0, #0
-_0805BAD0:
-	pop {r4, pc}
-	.align 2, 0
-	.syntax divided
diff --git a/asm/non_matching/manager22/sub_0805BAD4.inc b/asm/non_matching/manager22/sub_0805BAD4.inc
deleted file mode 100644
index 516edb52..00000000
--- a/asm/non_matching/manager22/sub_0805BAD4.inc
+++ /dev/null
@@ -1,23 +0,0 @@
-	.syntax unified
-	push {lr}
-	ldr r3, _0805BAF4 @ =gArea
-	ldrb r0, [r3, #0xc]
-	cmp r0, #0
-	beq _0805BAF2
-	ldr r1, _0805BAF8 @ =gScreen
-	ldr r2, _0805BAFC @ =gUnk_08108CA8
-	ldrh r0, [r3, #0xa]
-	lsls r0, r0, #0x10
-	asrs r0, r0, #0x14
-	lsls r0, r0, #1
-	adds r0, r0, r2
-	ldrh r0, [r0]
-	adds r1, #0x68
-	strh r0, [r1]
-_0805BAF2:
-	pop {pc}
-	.align 2, 0
-_0805BAF4: .4byte gArea
-_0805BAF8: .4byte gScreen
-_0805BAFC: .4byte gUnk_08108CA8
-	.syntax divided
diff --git a/asm/non_matching/manager22/sub_0805BB00.inc b/asm/non_matching/manager22/sub_0805BB00.inc
deleted file mode 100644
index 52849cd7..00000000
--- a/asm/non_matching/manager22/sub_0805BB00.inc
+++ /dev/null
@@ -1,54 +0,0 @@
-	.syntax unified
-	push {r4, r5, lr}
-	adds r4, r0, #0
-	adds r5, r1, #0
-	ldr r0, _0805BB50 @ =gArea
-	ldrb r0, [r0, #0xc]
-	cmp r0, #0
-	bne _0805BB28
-	bl GetEmptyManager
-	adds r1, r0, #0
-	cmp r1, #0
-	beq _0805BB28
-	movs r0, #9
-	strb r0, [r1, #8]
-	movs r0, #0x22
-	strb r0, [r1, #9]
-	adds r0, r1, #0
-	movs r1, #0
-	bl AppendEntityToList
-_0805BB28:
-	ldr r1, _0805BB54 @ =0x0600F000
-	movs r2, #0x80
-	lsls r2, r2, #4
-	movs r0, #0xf
-	bl MemFill16
-	ldr r0, _0805BB58 @ =gScreen
-	ldr r1, _0805BB5C @ =0x00001E0C
-	strh r1, [r0, #0x2c]
-	adds r0, #0x66
-	ldr r1, _0805BB60 @ =0x00003E48
-	strh r1, [r0]
-	ldr r0, _0805BB64 @ =gRoomVars
-	strh r4, [r0, #0xc]
-	cmp r5, #0
-	beq _0805BB68
-	ldr r1, _0805BB50 @ =gArea
-	movs r0, #1
-	b _0805BB6C
-	.align 2, 0
-_0805BB50: .4byte gArea
-_0805BB54: .4byte 0x0600F000
-_0805BB58: .4byte gScreen
-_0805BB5C: .4byte 0x00001E0C
-_0805BB60: .4byte 0x00003E48
-_0805BB64: .4byte gRoomVars
-_0805BB68:
-	ldr r1, _0805BB70 @ =gArea
-	movs r0, #2
-_0805BB6C:
-	strb r0, [r1, #0xc]
-	pop {r4, r5, pc}
-	.align 2, 0
-_0805BB70: .4byte gArea
-	.syntax divided
diff --git a/asm/non_matching/manager22/sub_0805BB74.inc b/asm/non_matching/manager22/sub_0805BB74.inc
deleted file mode 100644
index cd3b7362..00000000
--- a/asm/non_matching/manager22/sub_0805BB74.inc
+++ /dev/null
@@ -1,34 +0,0 @@
-	.syntax unified
-	push {lr}
-	adds r1, r0, #0
-	ldr r2, _0805BBB0 @ =gRoomVars
-	cmp r1, #0
-	bge _0805BB82
-	movs r0, #0xc
-	ldrsh r1, [r2, r0]
-_0805BB82:
-	ldr r0, _0805BBB4 @ =gArea
-	strh r1, [r0, #0xa]
-	strh r1, [r2, #0xc]
-	movs r0, #9
-	movs r1, #0x22
-	bl DeepFindEntityByID
-	cmp r0, #0
-	beq _0805BBAE
-	bl Manager22_Main
-	ldr r0, _0805BBB8 @ =gScreen
-	ldrh r1, [r0]
-	movs r3, #0x80
-	lsls r3, r3, #4
-	adds r2, r3, #0
-	orrs r1, r2
-	strh r1, [r0]
-	bl sub_0805BA78
-	bl sub_0805BAD4
-_0805BBAE:
-	pop {pc}
-	.align 2, 0
-_0805BBB0: .4byte gRoomVars
-_0805BBB4: .4byte gArea
-_0805BBB8: .4byte gScreen
-	.syntax divided
diff --git a/asm/non_matching/manager22/sub_0805BC04.inc b/asm/non_matching/manager22/sub_0805BC04.inc
deleted file mode 100644
index f74987d1..00000000
--- a/asm/non_matching/manager22/sub_0805BC04.inc
+++ /dev/null
@@ -1,34 +0,0 @@
-	.syntax unified
-	push {r4, lr}
-	movs r4, #0
-	ldr r2, _0805BC40 @ =gArea
-	ldrb r0, [r2, #0xc]
-	cmp r0, #0
-	beq _0805BC3A
-	ldr r0, _0805BC44 @ =gRoomVars
-	movs r3, #0xc
-	ldrsh r1, [r0, r3]
-	movs r3, #0xa
-	ldrsh r0, [r2, r3]
-	cmp r1, r0
-	ble _0805BC3A
-	ldr r2, _0805BC48 @ =gScreen
-	ldrh r1, [r2]
-	movs r3, #0x80
-	lsls r3, r3, #4
-	adds r0, r3, #0
-	orrs r0, r1
-	strh r0, [r2]
-	bl sub_0805BA78
-	adds r4, r0, #0
-	cmp r4, #0
-	beq _0805BC3A
-	bl sub_0805BAD4
-_0805BC3A:
-	adds r0, r4, #0
-	pop {r4, pc}
-	.align 2, 0
-_0805BC40: .4byte gArea
-_0805BC44: .4byte gRoomVars
-_0805BC48: .4byte gScreen
-	.syntax divided
diff --git a/asm/non_matching/manager22/sub_0805BC4C.inc b/asm/non_matching/manager22/sub_0805BC4C.inc
deleted file mode 100644
index 8ff50b9c..00000000
--- a/asm/non_matching/manager22/sub_0805BC4C.inc
+++ /dev/null
@@ -1,20 +0,0 @@
-	.syntax unified
-	push {lr}
-	ldr r1, _0805BC68 @ =gArea
-	ldrb r0, [r1, #0xc]
-	cmp r0, #0
-	beq _0805BC64
-	movs r0, #0
-	strb r0, [r1, #0xc]
-	ldr r2, _0805BC6C @ =gScreen
-	ldrh r1, [r2]
-	ldr r0, _0805BC70 @ =0x0000D7FF
-	ands r0, r1
-	strh r0, [r2]
-_0805BC64:
-	pop {pc}
-	.align 2, 0
-_0805BC68: .4byte gArea
-_0805BC6C: .4byte gScreen
-_0805BC70: .4byte 0x0000D7FF
-	.syntax divided
diff --git a/assets/assets.json b/assets/assets.json
index f5ae7dc1..1107a55b 100644
--- a/assets/assets.json
+++ b/assets/assets.json
@@ -33232,11 +33232,6 @@
     "start": 1084572,
     "size": 12
   },
-  {
-    "path": "manager22/gUnk_08108CA8.bin",
-    "start": 1084584,
-    "size": 36
-  },
   {
     "path": "manager24/gUnk_08108CFC.bin",
     "start": 1084668,
diff --git a/data/const/manager/manager22.s b/data/const/manager/manager22.s
deleted file mode 100644
index 1c056de8..00000000
--- a/data/const/manager/manager22.s
+++ /dev/null
@@ -1,8 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.section .rodata
-    .align 2
-
-gUnk_08108CA8:: @ 08108CA8
-	.incbin "manager22/gUnk_08108CA8.bin"
diff --git a/include/area.h b/include/area.h
index b0869bb6..7531f3ab 100644
--- a/include/area.h
+++ b/include/area.h
@@ -26,8 +26,10 @@ typedef struct {
     u8 dungeon_idx; /* same index as global flags for dungeons */
     u16 localFlagOffset;
     u8 filler[4];
-    u16 unk_0a;
-    u8 filler3[4];
+    u16 lightLevel;
+    u8 unk_0b;
+    u8 unk_0c;
+    u8 filler3[2];
     u16 field_0x10;
     u16 curPortalX;
     u16 curPortalY;
diff --git a/linker.ld b/linker.ld
index dad5e304..96e561c0 100644
--- a/linker.ld
+++ b/linker.ld
@@ -1163,7 +1163,7 @@ SECTIONS {
         data/const/manager/manager1D.o(.rodata);
         src/manager/manager1E.o(.rodata);
         data/const/manager/manager1F.o(.rodata);
-        data/const/manager/manager22.o(.rodata);
+        src/manager/manager22.o(.rodata);
         data/const/manager/manager23.o(.rodata);
         data/const/manager/manager24.o(.rodata);
         src/manager/manager26.o(.rodata);
diff --git a/src/enemy/enemy50.c b/src/enemy/enemy50.c
index e248ec16..a77fdec3 100644
--- a/src/enemy/enemy50.c
+++ b/src/enemy/enemy50.c
@@ -355,7 +355,7 @@ bool32 sub_08041170(Enemy50Entity* this) {
     } else {
         if ((sub_08049FDC(super, 1)) &&
             ((sub_0806FD54(super) ||
-              ((0xf < (s16)gArea.unk_0a && (EntityInRectRadius(super, gUnk_020000B0, 0x70, 0x48))))))) {
+              ((0xf < (s16)gArea.lightLevel && (EntityInRectRadius(super, gUnk_020000B0, 0x70, 0x48))))))) {
             sub_08041134(this);
             return TRUE;
         }
@@ -378,7 +378,7 @@ bool32 sub_080411E8(Enemy50Entity* this) {
                 }
                 return TRUE;
             case 2:
-                if ((s16)gArea.unk_0a < 0x10) {
+                if ((s16)gArea.lightLevel < 0x10) {
                     return FALSE;
                 }
                 return TRUE;
diff --git a/src/enemy/ghini.c b/src/enemy/ghini.c
index 371c4917..caf0e985 100644
--- a/src/enemy/ghini.c
+++ b/src/enemy/ghini.c
@@ -320,7 +320,7 @@ bool32 sub_0803F5A8(GhiniEntity* this) {
     u32 result;
     if (sub_08049FDC(super, 1) == 0) {
         result = 0;
-    } else if ((s16)gArea.unk_0a < 0x10) {
+    } else if ((s16)gArea.lightLevel < 0x10) {
         result = sub_0806FD54(super);
     } else {
         result = 1;
@@ -334,7 +334,7 @@ bool32 sub_0803F5D4(GhiniEntity* this) {
     } else {
         if ((sub_08049FDC(super, 1)) &&
             ((sub_0806FD54(super) ||
-              ((0xf < (s16)gArea.unk_0a && (EntityInRectRadius(super, gUnk_020000B0, 0x70, 0x48))))))) {
+              ((0xf < (s16)gArea.lightLevel && (EntityInRectRadius(super, gUnk_020000B0, 0x70, 0x48))))))) {
             sub_0803F630(this);
             return TRUE;
         }
diff --git a/src/game.c b/src/game.c
index 009c9859..f5baaa08 100644
--- a/src/game.c
+++ b/src/game.c
@@ -1331,7 +1331,7 @@ void InitRoom(void) {
     gArea.localFlagOffset = gLocalFlagBanks[a_hdr->flag_bank];
     gArea.filler[0] = a_hdr->flag_bank;
     gArea.unk1A = 180;
-    gArea.unk_0a = 256;
+    gArea.lightLevel = 256;
     InitRoomTransition();
     InitAllRoomResInfo();
 }
@@ -1412,7 +1412,7 @@ static void UpdateFakeScroll(void) {
     LinkedList* ll;
     Entity* e;
 
-    if ((gArea.filler3[1] & 1) == 0 || !gRoomVars.field_0x0)
+    if ((gArea.unk_0c & 1) == 0 || !gRoomVars.field_0x0)
         return;
 
     y = 0;
diff --git a/src/manager/manager22.c b/src/manager/manager22.c
index 5faa1a2c..4d6130cc 100644
--- a/src/manager/manager22.c
+++ b/src/manager/manager22.c
@@ -1,18 +1,204 @@
 
 #include "manager.h"
+#include "area.h"
+#include "main.h"
+#include "screen.h"
+#include "player.h"
+#include "room.h"
+#include "coord.h"
+#include "functions.h"
+#include "common.h"
 
-ASM_FUNC("asm/non_matching/manager22/Manager22_Main.inc", void Manager22_Main())
+typedef struct {
+    Manager manager;
+    s32 unk20;
+} Manager22;
 
-ASM_FUNC("asm/non_matching/manager22/sub_0805BA78.inc", void sub_0805BA78())
+extern void sub_0801E120(void);
+extern void sub_0801E154(u32);
+extern u32 CheckRectOnScreen(s32, s32, u32, u32);
+extern void sub_0801E160(u32, u32, u32);
 
-ASM_FUNC("asm/non_matching/manager22/sub_0805BAD4.inc", void sub_0805BAD4())
+u32 sub_0805BA78();
+void sub_0805BAD4();
 
-ASM_FUNC("asm/non_matching/manager22/sub_0805BB00.inc", void sub_0805BB00())
+void Manager22_Main(Manager22* this) {
+    s32 sVar1;
+    u32 uVar3;
 
-ASM_FUNC("asm/non_matching/manager22/sub_0805BB74.inc", void sub_0805BB74())
+    if (gArea.unk_0b == 0) {
+        sub_0801E104();
+        gScreen.lcd.displayControl &= ~(DISPCNT_BG3_ON | DISPCNT_WIN0_ON);
+        DeleteThisEntity();
+    }
+    if (this->manager.action == 0) {
+        this->manager.action = 1;
+        this->manager.unk_10 |= 0x20;
+        this->manager.unk_0e = 17;
+        this->unk20 = 0;
+        SetDefaultPriority((Entity*)this, 6);
+        sub_0801E120();
+        sub_0801E154(this->manager.unk_0e);
+    }
+    if (gMain.substate == 2) {
+        gScreen.lcd.displayControl |= DISPCNT_BG3_ON;
+        sub_0805BA78();
+        sub_0805BAD4();
+    }
+    if (gArea.unk_0b == 2) {
+        gScreen.lcd.displayControl &= ~DISPCNT_WIN0_ON;
+    } else {
+        if (CheckRectOnScreen(gPlayerEntity.x.HALF.HI - gRoomControls.origin_x,
+                              gPlayerEntity.y.HALF.HI - gRoomControls.origin_y, 0, 0)) {
+            gScreen.lcd.displayControl |= DISPCNT_WIN0_ON;
+        } else {
+            gScreen.lcd.displayControl &= ~DISPCNT_WIN0_ON;
+        }
+        uVar3 = this->manager.unk_0e;
+        if (((gPlayerState.flags & PL_USE_LANTERN)) && (gArea.unk_0b)) {
+            if (uVar3 < 0x48) {
+                uVar3 += 4;
+                sub_0801E154(uVar3);
+                this->unk20 = 0;
+            } else if ((gRoomTransition.frameCount & 3) == 0) {
+                this->manager.unk_0f += 0x10;
+                sVar1 = gSineTable[this->manager.unk_0f];
+                this->unk20 = sVar1 >> 7;
+                sub_0801E154(uVar3 + this->unk20);
+            }
+        } else {
+            this->unk20 = 0;
+            if (0x11 < uVar3) {
+                uVar3 -= 4;
+                if (uVar3 < 0x11) {
+                    uVar3 = 0x11;
+                }
+                sub_0801E154(uVar3);
+            }
+        }
 
-ASM_FUNC("asm/non_matching/manager22/UpdateLightLevel.inc", void UpdateLightLevel())
+        this->manager.unk_0e = uVar3;
+        sub_0801E160(gPlayerEntity.x.HALF.HI - gRoomControls.scroll_x,
+                     gPlayerEntity.y.HALF.HI - gRoomControls.scroll_y - 9 + gPlayerEntity.z.HALF.HI,
+                     uVar3 + this->unk20);
+    }
+}
 
-ASM_FUNC("asm/non_matching/manager22/sub_0805BC04.inc", void sub_0805BC04())
+#define ABS(x) ((unsigned)(x < 0 ? -(x) : x))
 
-ASM_FUNC("asm/non_matching/manager22/sub_0805BC4C.inc", void sub_0805BC4C())
+u32 sub_0805BA78() {
+    u32 uVar1;
+    s32 iVar1;
+    s32 iVar2;
+
+    iVar2 = (short)gArea.lightLevel;
+    iVar1 = gRoomVars.lightLevel;
+
+    if (iVar1 < 0) {
+        iVar1 = 0;
+    }
+
+    if (0x100 < iVar1) {
+        iVar1 = 0x100;
+    }
+
+    if (iVar2 != iVar1) {
+        if (ABS(iVar1 - iVar2) <= 4) {
+            iVar2 = iVar1;
+        } else {
+            if (iVar1 < iVar2) {
+                iVar2 = iVar2 - 4;
+            } else {
+                if (iVar1 > iVar2) {
+                    iVar2 = iVar2 + 4;
+                }
+            }
+        }
+        gArea.lightLevel = iVar2;
+    } else {
+        return 0;
+    }
+    return 1;
+}
+
+extern u16 gUnk_08108CA8[];
+
+void sub_0805BAD4() {
+    static const u16 gUnk_08108CA8[] = { 0x10,  0x10f, 0x20e, 0x30d, 0x40c, 0x50b, 0x60a, 0x709,  0x808,
+                                         0x907, 0xa06, 0xb05, 0xc04, 0xd03, 0xe02, 0xf01, 0x1000, 0x00 };
+    if (gArea.unk_0b) {
+        gScreen.controls.alphaBlend = gUnk_08108CA8[(gArea.lightLevel << 0x10) >> 0x14];
+    }
+}
+
+void sub_0805BB00(s32 lightLevel, s32 param_2) {
+    if (gArea.unk_0b == 0) {
+        Manager* pManager = GetEmptyManager();
+        if (pManager != 0) {
+            pManager->type = 9;
+            pManager->subtype = 34;
+            AppendEntityToList((Entity*)pManager, 0);
+        }
+    }
+    MemFill16(0xf, BG_SCREEN_ADDR(0x1E), BG_SCREEN_SIZE);
+    gScreen.bg3.control = 0x1e0c;
+    gScreen.controls.layerFXControl = 0x3e48;
+    gRoomVars.lightLevel = lightLevel;
+    if (param_2) {
+        gArea.unk_0b = 1;
+    } else {
+        gArea.unk_0b = 2;
+    }
+}
+
+void sub_0805BB74(s32 lightLevel) {
+    Manager22* manager;
+
+    if (lightLevel < 0) {
+        lightLevel = gRoomVars.lightLevel;
+    }
+    gArea.lightLevel = lightLevel;
+    gRoomVars.lightLevel = gArea.lightLevel;
+    manager = (Manager22*)DeepFindEntityByID(9, 0x22);
+    if (manager) {
+        Manager22_Main(manager);
+        gScreen.lcd.displayControl |= DISPCNT_BG3_ON;
+        sub_0805BA78();
+        sub_0805BAD4();
+    }
+}
+
+s32 UpdateLightLevel() {
+    s32 iVar1;
+
+    iVar1 = 0;
+    if (gArea.unk_0b && gRoomVars.lightLevel < (s16)gArea.lightLevel) {
+        gScreen.lcd.displayControl |= DISPCNT_BG3_ON;
+        iVar1 = sub_0805BA78();
+        if (iVar1) {
+            sub_0805BAD4();
+        }
+    }
+    return iVar1;
+}
+
+s32 sub_0805BC04(void) {
+    s32 iVar1;
+
+    iVar1 = 0;
+    if (gArea.unk_0b && gRoomVars.lightLevel > (short)gArea.lightLevel) {
+        gScreen.lcd.displayControl |= DISPCNT_BG3_ON;
+        iVar1 = sub_0805BA78();
+        if (iVar1) {
+            sub_0805BAD4();
+        }
+    }
+    return iVar1;
+}
+
+void sub_0805BC4C() {
+    if (gArea.unk_0b != 0) {
+        gArea.unk_0b = 0;
+        gScreen.lcd.displayControl &= ~(DISPCNT_BG3_ON | DISPCNT_WIN0_ON);
+    }
+}
diff --git a/src/manager/managerF.c b/src/manager/managerF.c
index 39f3ca47..f1cc1aca 100644
--- a/src/manager/managerF.c
+++ b/src/manager/managerF.c
@@ -280,7 +280,7 @@ void sub_08059220(ManagerF* this) {
     }
     if (!this->manager.action) {
         this->manager.action = 1;
-        gArea.unk_0a = gRoomVars.lightLevel;
+        gArea.lightLevel = gRoomVars.lightLevel;
     }
 }