diff --git a/th04_main.asm b/th04_main.asm
index 9a66eb1a..4f467353 100644
--- a/th04_main.asm
+++ b/th04_main.asm
@@ -23005,7 +23005,7 @@ loc_166A0:
 		mov	byte_2671F, 0
 		mov	byte_2671D, 0
 		mov	_boss_hp, 9000
-		mov	word_26720, 1EDCh
+		mov	_boss_phase_end_hp, 7900
 		mov	word_2671A, 0
 		sub	word ptr dword_2670A+2,	100h
 		jmp	loc_169B8
@@ -23077,9 +23077,9 @@ loc_1674E:
 		push	0
 		call	sub_15C7C
 		inc	byte_26719
-		mov	ax, word_26720
+		mov	ax, _boss_phase_end_hp
 		mov	_boss_hp, ax
-		sub	word_26720, 320h
+		sub	_boss_phase_end_hp, 800
 		jmp	loc_169B8
 ; ---------------------------------------------------------------------------
 
@@ -23124,16 +23124,16 @@ loc_167BB:
 		mov	word_2671A, 0
 		mov	byte_2671F, 0
 		mov	byte_2671D, 0
-		mov	ax, word_26720
+		mov	ax, _boss_phase_end_hp
 		mov	_boss_hp, ax
 		cmp	byte_26719, 0Ah
 		jnb	short loc_167EA
-		sub	word_26720, 44Ch
+		sub	_boss_phase_end_hp, 1100
 		jmp	loc_169B8
 ; ---------------------------------------------------------------------------
 
 loc_167EA:
-		sub	word_26720, 4B0h
+		sub	_boss_phase_end_hp, 1200
 		jmp	loc_169B8
 ; ---------------------------------------------------------------------------
 
@@ -23203,7 +23203,7 @@ loc_16869:
 		push	0
 		call	sub_15C7C
 		inc	byte_26719
-		mov	ax, word_26720
+		mov	ax, _boss_phase_end_hp
 		mov	_boss_hp, ax
 		jmp	loc_169B8
 ; ---------------------------------------------------------------------------
@@ -23239,11 +23239,11 @@ loc_168A8:
 
 loc_168C9:
 		inc	byte_26719
-		mov	ax, word_26720
+		mov	ax, _boss_phase_end_hp
 		mov	_boss_hp, ax
 		cmp	byte_26719, 11h
 		jnz	short loc_168F6
-		mov	word_26720, 0
+		mov	_boss_phase_end_hp, 0
 		mov	Palettes, 80h
 		mov	Palettes+1, 40h
 		mov	Palettes+2, 40h
@@ -23252,7 +23252,7 @@ loc_168C9:
 ; ---------------------------------------------------------------------------
 
 loc_168F6:
-		sub	word_26720, 4B0h
+		sub	_boss_phase_end_hp, 1200
 
 loc_168FC:
 		mov	word_2671A, 0
@@ -25251,7 +25251,7 @@ sub_179BC	proc near
 		idiv	bx
 		sub	_boss_hp, ax
 		mov	ax, _boss_hp
-		cmp	ax, word_26720
+		cmp	ax, _boss_phase_end_hp
 		jg	short loc_179F0
 		mov	al, 1
 		pop	bp
@@ -26834,10 +26834,10 @@ arg_2		= word ptr  6
 		mov	word_2671A, 0
 		mov	byte_2671D, 0
 		mov	byte_2671F, 0
-		mov	ax, word_26720
+		mov	ax, _boss_phase_end_hp
 		mov	_boss_hp, ax
 		mov	ax, [bp+arg_0]
-		mov	word_26720, ax
+		mov	_boss_phase_end_hp, ax
 		mov	byte_259EE, 0
 		pop	bp
 		retn	4
@@ -26919,7 +26919,7 @@ loc_1872F:
 		mov	fp_259E8, offset sub_180BB
 		mov	byte_259EF, 0
 		mov	_boss_hp, 9400
-		mov	word_26720, 0E74h
+		mov	_boss_phase_end_hp, 3700
 		mov	ax, word ptr dword_2670A
 		mov	word_259EA, ax
 		mov	ax, word ptr dword_2670A+2
@@ -28112,7 +28112,7 @@ loc_19178:
 		cmp	word_2671A, 0
 		jnz	short loc_191DC
 		mov	_boss_hp, 4800
-		mov	word_26720, 12C0h
+		mov	_boss_phase_end_hp, 4800
 		mov	Palettes, 60h
 		mov	Palettes+1, 0
 		mov	Palettes+2, 0
@@ -29142,7 +29142,7 @@ loc_19AC8:
 		cmp	word_2671A, 0
 		jnz	short loc_19AEF
 		mov	_boss_hp, 3050
-		mov	word_26720, 79Eh
+		mov	_boss_phase_end_hp, 1950
 		mov	Palettes, 0
 		mov	Palettes+1, 0
 		mov	Palettes+2, 60h
@@ -32338,10 +32338,10 @@ loc_1B43E:
 		mov	word_2671A, 0
 		mov	byte_2671F, 0
 		mov	byte_2671D, 0
-		mov	ax, word_26720
+		mov	ax, _boss_phase_end_hp
 		mov	_boss_hp, ax
 		mov	ax, [bp+arg_0]
-		mov	word_26720, ax
+		mov	_boss_phase_end_hp, ax
 		mov	word_25A0A, 0
 		mov	byte_26718, 80h
 		mov	word_25A0A, 0
@@ -32400,7 +32400,7 @@ loc_1B4EB:
 		mov	byte_2671F, 0
 		mov	byte_2671D, 0
 		mov	_boss_hp, 13300
-		mov	word_26720, 2968h
+		mov	_boss_phase_end_hp, 10600
 		mov	word_2671A, 0
 		mov	word_25A0A, 0
 		mov	byte_25A06, 1
@@ -32654,7 +32654,7 @@ loc_1B744:
 
 loc_1B748:
 		mov	ax, _boss_hp
-		cmp	ax, word_26720
+		cmp	ax, _boss_phase_end_hp
 		jg	loc_1B8EA
 		push	14h
 		call	sub_19FD8
@@ -33994,7 +33994,7 @@ loc_1C301:
 		mov	Palettes+2, 80h
 		mov	byte_266D3, 1
 		mov	_boss_hp, 6000
-		mov	word_26720, 1770h
+		mov	_boss_phase_end_hp, 6000
 		jmp	loc_1C67A
 ; ---------------------------------------------------------------------------
 
@@ -38143,7 +38143,7 @@ sub_1E64E	proc near
 		mov	ah, 0
 		sub	_boss_hp, ax
 		mov	ax, _boss_hp
-		cmp	ax, word_26720
+		cmp	ax, _boss_phase_end_hp
 		jg	short loc_1E678
 		mov	al, 1
 		pop	bp
@@ -38271,10 +38271,10 @@ loc_1E719:
 		mov	word_2671A, 0
 		mov	byte_2671D, 0
 		mov	byte_2671F, 0
-		mov	ax, word_26720
+		mov	ax, _boss_phase_end_hp
 		mov	_boss_hp, ax
 		mov	ax, [bp+arg_0]
-		mov	word_26720, ax
+		mov	_boss_phase_end_hp, ax
 		pop	si
 		pop	bp
 		retn	4
@@ -39735,7 +39735,7 @@ loc_1F421:
 		cmp	word_2671A, 80h
 		jl	loc_1F8A5
 		mov	word_26712, 0
-		mov	word_26720, 238Ch
+		mov	_boss_phase_end_hp, 9100
 		push	0FFFF1EDCh
 		call	sub_1E6F3
 		jmp	loc_1F8A5
@@ -41465,7 +41465,7 @@ loc_202B0:
 		mov	_boss_hp, 18700
 		cmp	word_2671A, 80h
 		jle	loc_206B6
-		mov	word_26720, 396Ch
+		mov	_boss_phase_end_hp, 14700
 		inc	byte_26719
 		mov	word_2671A, 0
 		call	snd_se_play pascal, 13
@@ -46922,7 +46922,7 @@ byte_2671C	db ?
 byte_2671D	db ?
 byte_2671E	db ?
 byte_2671F	db ?
-word_26720	dw ?
+_boss_phase_end_hp	dw ?
 		dd    ?	;
 		dd    ?	;
 		dd    ?	;
diff --git a/th05_main.asm b/th05_main.asm
index 17cd44b1..308c9a99 100644
--- a/th05_main.asm
+++ b/th05_main.asm
@@ -27406,7 +27406,7 @@ loc_186EF:
 		cmp	boss_phase_frame, 1
 		jnz	short loc_18702
 		mov	_boss_hp, 4650
-		mov	word_2634C, 9F6h
+		mov	_boss_phase_end_hp, 2550
 
 loc_18702:
 		call	sub_1FB07
@@ -28500,7 +28500,7 @@ loc_19073:
 		cmp	boss_phase_frame, 1
 		jnz	short loc_19097
 		mov	_boss_hp, 4400
-		mov	word_2634C, 0BB8h
+		mov	_boss_phase_end_hp, 3000
 		mov	word_2A72A, 400h
 		mov	byte_2A72F, 2
 		mov	word_2A72C, 8
@@ -30335,7 +30335,7 @@ loc_1A089:
 		cmp	boss_phase_frame, 1
 		jnz	short loc_1A0AD
 		mov	_boss_hp, 9600
-		mov	word_2634C, 1CE8h
+		mov	_boss_phase_end_hp, 7400
 		mov	word_2A72A, 400h
 		mov	byte_2A72F, 2
 		mov	word_2A72C, 8
@@ -30462,16 +30462,16 @@ loc_1A208:
 		mov	boss_phase_frame, 0
 		mov	byte ptr word_2634A+1, 0
 		mov	byte_26349, 0
-		mov	ax, word_2634C
+		mov	ax, _boss_phase_end_hp
 		mov	_boss_hp, ax
 		cmp	boss_phase, 0Ch
 		jnb	short loc_1A236
-		sub	word_2634C, 898h
+		sub	_boss_phase_end_hp, 2200
 		jmp	short loc_1A23C
 ; ---------------------------------------------------------------------------
 
 loc_1A236:
-		mov	word_2634C, 0
+		mov	_boss_phase_end_hp, 0
 
 loc_1A23C:
 		mov	word_2CE2E, 0
@@ -31690,7 +31690,7 @@ loc_1AC1C:
 		cmp	boss_phase_frame, 1	; jumptable 0001AC18 case 0
 		jnz	short loc_1AC5E
 		mov	_boss_hp, 4500
-		mov	word_2634C, 0
+		mov	_boss_phase_end_hp, 0
 		mov	word_2635A, 1194h
 		mov	word_26364, 0
 		mov	word_2A72A, 400h
@@ -33265,7 +33265,7 @@ loc_1BA22:
 		cmp	boss_phase_frame, 1
 		jnz	short loc_1BA63
 		mov	_boss_hp, 7900
-		mov	word_2634C, 11F8h
+		mov	_boss_phase_end_hp, 4600
 		mov	word_2A72A, 400h
 		mov	byte_2A72F, 2
 		mov	word_2A72C, 8
@@ -34478,7 +34478,7 @@ loc_1C54D:
 		cmp	boss_phase_frame, 1
 		jnz	short loc_1C58E
 		mov	_boss_hp, 7800
-		mov	word_2634C, 16A8h
+		mov	_boss_phase_end_hp, 5800
 		mov	word_2A72A, 400h
 		mov	byte_2A72F, 2
 		mov	word_2A72C, 8
@@ -35282,8 +35282,8 @@ loc_1CC3E:
 
 loc_1CC7F:
 		mov	ax, _boss_hp
-		sub	ax, word_2634C
-		cmp	ax, 258h
+		sub	ax, _boss_phase_end_hp
+		cmp	ax, 600
 		jge	short loc_1CCD0
 		cmp	byte_2D083, 0
 		jnz	short loc_1CCD0
@@ -35625,8 +35625,8 @@ loc_1D02B:
 
 loc_1D030:
 		mov	ax, _boss_hp
-		sub	ax, word_2634C
-		cmp	ax, 1F4h
+		sub	ax, _boss_phase_end_hp
+		cmp	ax, 500
 		jge	short loc_1D081
 		cmp	byte_2D083, 0
 		jnz	short loc_1D081
@@ -35861,7 +35861,7 @@ loc_1D29C:
 		cmp	boss_phase_frame, 1
 		jnz	short loc_1D2EF
 		mov	_boss_hp, 8300
-		mov	word_2634C, 1D4Ch
+		mov	_boss_phase_end_hp, 7500
 		mov	word_2A72A, 400h
 		mov	byte_2A72F, 2
 		mov	word_2A72C, 8
@@ -37481,7 +37481,7 @@ loc_1E1CD:
 		cmp	boss_phase_frame, 1
 		jnz	short loc_1E220
 		mov	_boss_hp, 22800
-		mov	word_2634C, 5078h
+		mov	_boss_phase_end_hp, 20600
 		mov	word_2A72A, 400h
 		mov	byte_2A72F, 2
 		mov	word_2A72C, 8
@@ -39407,10 +39407,10 @@ loc_1F25F:
 		mov	boss_phase_frame, 0
 		mov	byte_26349, 0
 		mov	byte ptr word_2634A+1, 0
-		mov	ax, word_2634C
+		mov	ax, _boss_phase_end_hp
 		mov	_boss_hp, ax
 		mov	ax, [bp+arg_0]
-		mov	word_2634C, ax
+		mov	_boss_phase_end_hp, ax
 		pop	si
 		pop	bp
 		retn	4
@@ -39449,7 +39449,7 @@ loc_1F2C9:
 		cmp	boss_phase_frame, 1
 		jnz	short loc_1F333
 		mov	_boss_hp, 26500
-		mov	word_2634C, 5CF8h
+		mov	_boss_phase_end_hp, 23800
 		mov	word_2A72A, 800h
 		mov	byte_2A72F, 2
 		mov	word_2A72C, 8
@@ -40414,7 +40414,7 @@ sub_1FADD	proc near
 		mov	ah, 0
 		sub	_boss_hp, ax
 		mov	ax, _boss_hp
-		cmp	ax, word_2634C
+		cmp	ax, _boss_phase_end_hp
 		jg	short loc_1FB03
 		mov	al, 1
 		pop	bp
@@ -40534,10 +40534,10 @@ loc_1FB94:
 		mov	boss_phase_frame, 0
 		mov	byte_26349, 0
 		mov	byte ptr word_2634A+1, 0
-		mov	ax, word_2634C
+		mov	ax, _boss_phase_end_hp
 		mov	_boss_hp, ax
 		mov	ax, [bp+arg_0]
-		mov	word_2634C, ax
+		mov	_boss_phase_end_hp, ax
 		pop	si
 		pop	bp
 		retn	4
@@ -46184,7 +46184,7 @@ boss_phase_frame	dw ?
 byte_26348	db ?
 byte_26349	db ?
 word_2634A	dw ?
-word_2634C	dw ?
+_boss_phase_end_hp	dw ?
 dword_2634E	dd ?
 word_26352	dw ?
 word_26354	dw ?