diff --git a/src/sys/localization.cpp b/src/sys/localization.cpp
index c50d642..e813314 100644
--- a/src/sys/localization.cpp
+++ b/src/sys/localization.cpp
@@ -1,34 +1,30 @@
 #include "localization.h"
+#include "encoding.h"
 
-namespace strings {
-
-const char* back[] = {
-	"\x96\xDF\x82\xE9", // "戻る" in SJIS
-	"Back",
-};
-const char* next_page[] = {
-	"\x8E\x9F\x82\xCC\x83\x79\x81\x5B\x83\x57", // "次のページ" in SJIS
-	"Next Page",
-};
-const char* dps_initial_tvars[][7] = {
-	{
-		"\x83\x4A\x83\x58\x83\x5E\x83\x80", // "カスタム" in SJIS
-		"\x83\x8A\x81\x5B\x83\x69\x83\x58", // "リーナス" in SJIS
-		"\x82\xA9\x82\xC2\x82\xDD", // "かつみ" in SJIS
-		"\x97\x52\x94\xFC\x8E\x71", // "由美子" in SJIS
-		"\x82\xA2\x82\xC2\x82\xDD", // "いつみ" in SJIS
-		"\x82\xD0\x82\xC6\x82\xDD", // "ひとみ" in SJIS
-		"\x90\x5E\x97\x9D\x8E\x71", // "真理子" in SJIS
-	},
-	{
-		"Custom",
-		"Linus",
-		"Katsumi",
-		"Yumiko",
-		"Itsumi",
-		"Hitomi",
-		"Mariko",
-	},
-};
-
-} // namespace strings
+Strings::Strings(Language lang, Encoding* encoding)
+{
+	switch (lang) {
+	case JAPANESE:
+		back = encoding->fromUtf8(u8"戻る");
+		next_page = encoding->fromUtf8(u8"次のページ");
+		dps_initial_tvars[0] = encoding->fromUtf8(u8"カスタム");
+		dps_initial_tvars[1] = encoding->fromUtf8(u8"リーナス");
+		dps_initial_tvars[2] = encoding->fromUtf8(u8"かつみ");
+		dps_initial_tvars[3] = encoding->fromUtf8(u8"由美子");
+		dps_initial_tvars[4] = encoding->fromUtf8(u8"いつみ");
+		dps_initial_tvars[5] = encoding->fromUtf8(u8"ひとみ");
+		dps_initial_tvars[6] = encoding->fromUtf8(u8"真理子");
+		break;
+	case ENGLISH:
+		back = "Back";
+		next_page = "Next Page";
+		dps_initial_tvars[0] = "Custom";
+		dps_initial_tvars[1] = "Linus";
+		dps_initial_tvars[2] = "Katsumi";
+		dps_initial_tvars[3] = "Yumiko";
+		dps_initial_tvars[4] = "Itsumi";
+		dps_initial_tvars[5] = "Hitomi";
+		dps_initial_tvars[6] = "Mariko";
+		break;
+	}
+}
diff --git a/src/sys/localization.h b/src/sys/localization.h
index ae03b5b..e4ab3c0 100644
--- a/src/sys/localization.h
+++ b/src/sys/localization.h
@@ -1,17 +1,19 @@
 #ifndef _LOCALIZATION_H_
 #define _LOCALIZATION_H_
 
+class Encoding;
+
 enum Language {
 	JAPANESE = 0,
 	ENGLISH = 1,
 };
 
-namespace strings {
+struct Strings {
+	Strings(Language lang, Encoding* encoding);
 
-extern const char* back[];
-extern const char* next_page[];
-extern const char* dps_initial_tvars[][7];
-
-} // namespace strings
+	const char* back;
+	const char* next_page;
+	const char* dps_initial_tvars[7];
+};
 
 #endif // _LOCALIZATION_H_
diff --git a/src/sys/nact.cpp b/src/sys/nact.cpp
index 2806fb9..b6e9d3e 100644
--- a/src/sys/nact.cpp
+++ b/src/sys/nact.cpp
@@ -23,8 +23,8 @@ NACT::NACT(int sys_ver, uint32 crc32_a, uint32 crc32_b, const Config& config)
 	: sys_ver(sys_ver),
 	  crc32_a(crc32_a),
 	  crc32_b(crc32_b),
-	  lang(get_language()),
-	  encoding(Encoding::create(get_encoding_name(config)))
+	  encoding(Encoding::create(get_encoding_name(config))),
+	  strings(get_language(), encoding.get())
 {
 	platform_initialize();
 
diff --git a/src/sys/nact.h b/src/sys/nact.h
index bbd4e6a..912ba56 100644
--- a/src/sys/nact.h
+++ b/src/sys/nact.h
@@ -266,8 +266,8 @@ public:
 	int sys_ver;
 	uint32 crc32_a;		// ADISK
 	uint32 crc32_b;		// BDISK for D.P.S -SG- and Super D.P.S
-	Language lang;
 	std::unique_ptr<Encoding> encoding;
+	Strings strings;
 
 	// for Y27
 	char tvar[10][33];
diff --git a/src/sys/nact_sys1.cpp b/src/sys/nact_sys1.cpp
index e1258f2..196065c 100644
--- a/src/sys/nact_sys1.cpp
+++ b/src/sys/nact_sys1.cpp
@@ -76,7 +76,7 @@ NACT_Sys1::NACT_Sys1(uint32 crc32_a, uint32 crc32_b, const Config& config)
 	case CRC32_DPS_SG3:
 		text_refresh = false;
 		for (int i = 0; i < 7; i++)
-			strcpy(tvar[i], strings::dps_initial_tvars[lang][i]);
+			strcpy(tvar[i], strings.dps_initial_tvars[i]);
 		break;
 	case CRC32_INTRUDER:
 		paint_x = paint_y = map_page = 0;
@@ -419,7 +419,7 @@ top2:
 		// 次のページを追加
 		ags->menu_dest_x = 2;
 		ags->menu_dest_y += 2;
-		ags->draw_text(strings::next_page[lang]);
+		ags->draw_text(strings.next_page);
 		id[index++] = -1;
 		ags->menu_dest_y += ags->menu_font_size + 2;
 	}
@@ -490,7 +490,7 @@ top:
 		// 戻るを追加
 		ags->menu_dest_x = 2;
 		ags->menu_dest_y += 2;
-		ags->draw_text(strings::back[lang]);
+		ags->draw_text(strings.back);
 		id[index++] = 0;
 		ags->menu_dest_y += ags->menu_font_size + 2;
 	} else {
@@ -516,14 +516,14 @@ top2:
 		// 戻るを追加
 		ags->menu_dest_x = 2;
 		ags->menu_dest_y += 2;
-		ags->draw_text(strings::back[lang]);
+		ags->draw_text(strings.back);
 		id[index++] = 0;
 		ags->menu_dest_y += ags->menu_font_size + 2;
 
 		// 次のページを追加
 		ags->menu_dest_x = 2;
 		ags->menu_dest_y += 2;
-		ags->draw_text(strings::next_page[lang]);
+		ags->draw_text(strings.next_page);
 		id[index++] = -1;
 		ags->menu_dest_y += ags->menu_font_size + 2;
 	}
diff --git a/src/sys/nact_sys2.cpp b/src/sys/nact_sys2.cpp
index 3decff1..7a16b0d 100644
--- a/src/sys/nact_sys2.cpp
+++ b/src/sys/nact_sys2.cpp
@@ -490,7 +490,7 @@ void NACT_Sys2::cmd_open_obj(int verb)
 	// 戻るを追加
 	ags->menu_dest_x = 2;
 	ags->menu_dest_y += 2;
-	ags->draw_text(strings::back[lang]);
+	ags->draw_text(strings.back);
 	id[index++] = 0;
 	ags->menu_dest_y += ags->menu_font_size + 2;
 	ags->draw_menu = false;
diff --git a/src/sys/nact_sys3.cpp b/src/sys/nact_sys3.cpp
index 92a11e0..810cdea 100644
--- a/src/sys/nact_sys3.cpp
+++ b/src/sys/nact_sys3.cpp
@@ -265,7 +265,7 @@ void NACT_Sys3::cmd_open_obj(int verb)
 	// 戻るを追加
 	ags->menu_dest_x = 2;
 	ags->menu_dest_y += 2;
-	ags->draw_text(strings::back[lang]);
+	ags->draw_text(strings.back);
 	id[index++] = 0;
 	ags->menu_dest_y += ags->menu_font_size + 2;
 	ags->draw_menu = false;