diff --git a/modules/CMakeLists.txt b/modules/CMakeLists.txt
index 09a0ce4..6347c96 100644
--- a/modules/CMakeLists.txt
+++ b/modules/CMakeLists.txt
@@ -70,7 +70,7 @@ add_library(modules STATIC
 
 target_include_directories(modules PUBLIC .)
 
-target_compile_options(modules PRIVATE -Wno-pointer-sign -Wno-invalid-source-encoding)
+target_compile_options(modules PRIVATE -Wno-pointer-sign)
 target_link_libraries(modules PRIVATE graph alk drawtext list)
 
 if (SDL2MIXER_FOUND)
diff --git a/modules/NIGHTDLL/nt_msg.c b/modules/NIGHTDLL/nt_msg.c
index 69903aa..19b5cd7 100644
--- a/modules/NIGHTDLL/nt_msg.c
+++ b/modules/NIGHTDLL/nt_msg.c
@@ -17,12 +17,14 @@
 #include "nt_msg.h"
 #include "sprite.h"
 #include "sactcg.h"
-#include "sjisname.h"
 #include "sactstring.h"
 
 
 extern int ntsel_dosel(void);
 
+#define SNAME_RYO "亮　　　　"
+#define SNAME_RYO_DEF "亮"
+
 // 通常メッセージ表示位置と大きさ
 #define MSGFRAME_0_X 6
 #define MSGFRAME_0_Y 347
@@ -102,7 +104,7 @@ void ntmsg_init() {
 
 
 	// 主人公名前
-	nt_sstr_regist_replace(SNAME_RYO, SNAME_RYO_DEF);
+	nt_sstr_regist_replace(utf2sjis(SNAME_RYO), utf2sjis(SNAME_RYO_DEF));
 	
 	night.msg.cbmove = cb_mousemove;
 	night.msg.cbrelease = cb_keyrelease;
diff --git a/modules/NIGHTDLL/sactstring.c b/modules/NIGHTDLL/sactstring.c
index d8b47f1..acaf0b7 100644
--- a/modules/NIGHTDLL/sactstring.c
+++ b/modules/NIGHTDLL/sactstring.c
@@ -97,8 +97,8 @@ int nt_sstr_regist_replace(char *sstr, char *dstr) {
 	if (sstr == dstr) return NG;
 	
 	ex = malloc(sizeof(strexchange_t));
-	ex->src = strdup(sstr);
-	ex->dst = strdup(dstr);
+	ex->src = sstr;
+	ex->dst = dstr;
 	strreplace = slist_append(strreplace, ex);
 	return OK;
 }
diff --git a/modules/NIGHTDLL/sjisname.h b/modules/NIGHTDLL/sjisname.h
deleted file mode 100644
index 771c589..0000000
--- a/modules/NIGHTDLL/sjisname.h
+++ /dev/null
@@ -1,2 +0,0 @@
-#define SNAME_RYO "���@�@�@�@"
-#define SNAME_RYO_DEF "��"
diff --git a/modules/SACT/sactlog.c b/modules/SACT/sactlog.c
index e45b398..f2dfec1 100644
--- a/modules/SACT/sactlog.c
+++ b/modules/SACT/sactlog.c
@@ -40,7 +40,17 @@
 #include "ngraph.h"
 #include "drawtext.h"
 #include "utfsjis.h"
-#include "sactlog_sjismsg.c"
+
+#define LOGMSG_LINES 6
+
+static const char *logmsg[LOGMSG_LINES] = {
+	"\n",
+	"※バックログ操作方法※",
+	"[ESC]またはマウス右クリックでゲームに戻る",
+	"[PageUp][PageDown]でページスクロール",
+	"[↑][↓]またはマウスホイールで行スクロール",
+	"\n",
+};
 
 /*
   ホイールで上下スクロール
@@ -73,21 +83,18 @@ static void draw_log() {
 	// 表示始め位置
 	node = list_nth(sact.log, list_length(sact.log) - curline);
 	for (i = 0; i < LOGLINENUM; i++) {
-		char *str, *streuc;
 		if (cur <= 0) continue;
 		
-		str = (char *)(node->data);
+		char *str = (char *)(node->data);
 		if (0 == strcmp(str, "\n")) {
 			gr_fill(chr, 0, y + FONTSIZE/2, sf0->width, 3, 128, 0, 0);
 		} else {
-			streuc = sjis2utf(str);
 			if (cur < 6) {
 				dt_setfont(FONT_MINCHO, FONTSIZE);
 			} else {
 				dt_setfont(FONT_GOTHIC, FONTSIZE);
 			}
 			dt_drawtext(chr, 0, y, str);
-			free(streuc);
 		}
 		y += FONTSIZE;
 		cur--;
@@ -103,13 +110,15 @@ static void draw_log() {
 
 
 int sblog_start(void) {
+	static char *logmsg_sjis[6];
+	if (!logmsg_sjis[0]) {
+		for (int i = 0; i < LOGMSG_LINES; i++)
+			logmsg_sjis[i] = utf2sjis(logmsg[i]);
+	}
+
 	// 説明文章を追加
-	sact.log = list_append(sact.log, "\n");
-	sact.log = list_append(sact.log, LOGMSG1);
-	sact.log = list_append(sact.log, LOGMSG2);
-	sact.log = list_append(sact.log, LOGMSG3);
-	sact.log = list_append(sact.log, LOGMSG4);
-	sact.log = list_append(sact.log, "\n");
+	for (int i = 0; i < LOGMSG_LINES; i++)
+		sact.log = list_append(sact.log, logmsg_sjis[i]);
 	
 	back = sf_dup(sf0);
 	chr  = sf_create_surface(sf0->width, sf0->height, 8);
@@ -129,7 +138,7 @@ int sblog_end(void) {
 	sf_free(chr);
 	
 	// 説明文章を削除
-	for (i = 0; i < 6; i++) {
+	for (i = 0; i < LOGMSG_LINES; i++) {
 		node = list_last(sact.log);
 		sact.log = list_remove(sact.log, node->data);
 	}
diff --git a/modules/SACT/sactlog_sjismsg.c b/modules/SACT/sactlog_sjismsg.c
deleted file mode 100644
index 63bd4bb..0000000
--- a/modules/SACT/sactlog_sjismsg.c
+++ /dev/null
@@ -1,5 +0,0 @@
-#define LOGMSG1 "���o�b�N���O������@��"
-#define LOGMSG2 "[ESC]�܂��̓}�E�X�E�N���b�N�ŃQ�[���ɖ߂�"
-#define LOGMSG3 "[PageUp][PageDown]�Ńy�[�W�X�N���[��"
-#define LOGMSG4 "[��][��]�܂��̓}�E�X�z�C�[���ōs�X�N���[��"
-