diff --git a/src/asset_manager.c b/src/asset_manager.c
index 1cfea02..5038855 100644
--- a/src/asset_manager.c
+++ b/src/asset_manager.c
@@ -104,7 +104,7 @@ void asset_manager_init(void)
 	char *d_name;
 
 	if (!(dir = opendir_utf8(config.game_dir))) {
-		ERROR("Failed to open directory: %s", config.game_dir);
+		ERROR("Failed to open directory: %s", display_utf0(config.game_dir));
 	}
 
 	char *base = get_base_name(config.ain_filename);
@@ -121,7 +121,7 @@ void asset_manager_init(void)
 		if (!strcasecmp(ext, "ald")) {
 			int dno = toupper(d_name[base_len+1]) - 'A';
 			if (dno < 0 || dno >= ALD_FILEMAX) {
-				WARNING("Invalid ALD index: %s", d_name);
+				WARNING("Invalid ALD index: %s", display_utf0(d_name));
 				goto loop_next;
 			}
 
@@ -147,7 +147,7 @@ void asset_manager_init(void)
 				ald_count[ASSET_DATA] = max(ald_count[ASSET_DATA], dno+1);
 				break;
 			default:
-				WARNING("Unhandled ALD file: %s", d_name);
+				WARNING("Unhandled ALD file: %s", display_utf0(d_name));
 				break;
 			}
 		} else if (!strcasecmp(ext, "bgi")) {
@@ -245,7 +245,7 @@ static void add_cg_to_index(struct archive_data *data, possibly_unused void *_)
 {
 	int logical_no = cg_name_to_int(data->name);
 	if (logical_no < 0) {
-		WARNING("Can't determine logical index for CG: %s", data->name);
+		WARNING("Can't determine logical index for CG: %s", display_sjis0(data->name));
 		return;
 	}
 
diff --git a/src/audio_meta.c b/src/audio_meta.c
index bc9b2a4..c494281 100644
--- a/src/audio_meta.c
+++ b/src/audio_meta.c
@@ -18,8 +18,10 @@
 #include <stdlib.h>
 #include "system4.h"
 #include "system4/file.h"
+
 #include "mixer.h"
 #include "little_endian.h"
+#include "xsystem4.h"
 
 #define BGI_MAX 100
 
@@ -46,7 +48,7 @@ void bgi_read(const char *path)
 {
 	FILE *fp = file_open_utf8(path, "rb");
 	if (!fp) {
-		WARNING("Failed to open bgi file: %s", path);
+		WARNING("Failed to open bgi file: %s", display_utf0(path));
 		return;
 	}
 
@@ -104,7 +106,7 @@ void wai_load(const char *path)
 	uint8_t *file = file_read(path, &len);
 
 	if (len < 48 || file[0] != 'X' || file[1] != 'I' || file[2] != '2' || file[3] != '\0') {
-		WARNING("Not a .wai file: %s", path);
+		WARNING("Not a .wai file: %s", display_utf0(path));
 		goto end;
 	}
 	int count = LittleEndian_getDW(file, 8) - 1;
diff --git a/src/debug.c b/src/debug.c
index 402fba5..b8e71f7 100644
--- a/src/debug.c
+++ b/src/debug.c
@@ -103,7 +103,7 @@ bool dbg_set_function_breakpoint(const char *_name, void(*cb)(struct breakpoint*
 	free(name);
 
 	if (fno < 0) {
-		DBG_ERROR("No function with name '%s'", _name);
+		DBG_ERROR("No function with name '%s'", display_sjis0(_name));
 		return false;
 	}
 
@@ -113,11 +113,11 @@ bool dbg_set_function_breakpoint(const char *_name, void(*cb)(struct breakpoint*
 	breakpoints[nr_breakpoints].cb = cb;
 	breakpoints[nr_breakpoints].data = data;
 	breakpoints[nr_breakpoints].message = xmalloc(512);
-	snprintf(breakpoints[nr_breakpoints].message, 511, "Hit breakpoint at function '%s' (0x%08x)", _name, f->address);
+	snprintf(breakpoints[nr_breakpoints].message, 511, "Hit breakpoint at function '%s' (0x%08x)", display_sjis0(_name), f->address);
 	LittleEndian_putW(ain->code, f->address, BREAKPOINT + nr_breakpoints);
 	nr_breakpoints++;
 
-	NOTICE("Set breakpoint at function '%s' (0x%08x)", _name, f->address);
+	NOTICE("Set breakpoint at function '%s' (0x%08x)", display_sjis0(_name), f->address);
 	return true;
 }
 
@@ -171,9 +171,7 @@ void dbg_print_stack_trace(void)
 {
 	for (int i = call_stack_ptr - 1, j = 0; i >= 0; i--, j++) {
 		struct ain_function *f = &ain->functions[call_stack[i].fno];
-		char *u = sjis2utf(f->name, strlen(f->name));
 		uint32_t addr = (i == call_stack_ptr - 1) ? instr_ptr : call_stack[i+1].call_address;
-		NOTICE("#%d 0x%08x in %s", j, addr, u);
-		free(u);
+		NOTICE("#%d 0x%08x in %s", j, addr, display_sjis0(f->name));
 	}
 }
diff --git a/src/dungeon/dungeon.c b/src/dungeon/dungeon.c
index b939e93..2e3a484 100644
--- a/src/dungeon/dungeon.c
+++ b/src/dungeon/dungeon.c
@@ -91,9 +91,9 @@ static GLuint *load_event_textures(int *nr_textures_out)
 	int error = ARCHIVE_SUCCESS;
 	struct alk_archive *alk = alk_open(path, ARCHIVE_MMAP, &error);
 	if (error == ARCHIVE_FILE_ERROR) {
-		WARNING("alk_open(\"%s\"): %s", path, strerror(errno));
+		WARNING("alk_open(\"%s\"): %s", display_utf0(path), strerror(errno));
 	} else if (error == ARCHIVE_BAD_ARCHIVE_ERROR) {
-		WARNING("alk_open(\"%s\"): invalid .alk file", path);
+		WARNING("alk_open(\"%s\"): invalid .alk file", display_utf0(path));
 	}
 	free(path);
 	if (!alk)
@@ -138,9 +138,9 @@ bool dungeon_load(struct dungeon_context *ctx, int num)
 		int error = ARCHIVE_SUCCESS;
 		struct archive *dlf = (struct archive *)dlf_open(path, ARCHIVE_MMAP, &error);
 		if (error == ARCHIVE_FILE_ERROR) {
-			WARNING("dlf_open(\"%s\"): %s", path, strerror(errno));
+			WARNING("dlf_open(\"%s\"): %s", display_utf0(path), strerror(errno));
 		} else if (error == ARCHIVE_BAD_ARCHIVE_ERROR) {
-			WARNING("dlf_open(\"%s\"): invalid .dlf file", path);
+			WARNING("dlf_open(\"%s\"): invalid .dlf file", display_utf0(path));
 		}
 		free(path);
 		if (!dlf)
diff --git a/src/ffi.c b/src/ffi.c
index 29a179f..fa3c1ea 100644
--- a/src/ffi.c
+++ b/src/ffi.c
@@ -98,9 +98,7 @@ static void trace_hll_call(struct ain_library *lib, struct ain_hll_function *f,
 	else if (!strcmp(lib->name, "SengokuRanceFont"));
 	else goto notrace;
 
-	char *u = sjis2utf(ain->functions[call_stack[call_stack_ptr-1].fno].name, 0);
-	sys_message("(%s) ", u);
-	free(u);
+	sys_message("(%s) ", display_sjis0(ain->functions[call_stack[call_stack_ptr-1].fno].name));
 
 	sys_message("%s.%s(", lib->name, f->name);
 	union vm_value **args = _args;
@@ -108,7 +106,7 @@ static void trace_hll_call(struct ain_library *lib, struct ain_hll_function *f,
 		if (i > 0) {
 			sys_message(", ");
 		}
-		sys_message("%s=", f->arguments[i].name);
+		sys_message("%s=", display_sjis0(f->arguments[i].name));
 		switch (f->arguments[i].type.data) {
 		case AIN_INT:
 		case AIN_LONG_INT:
@@ -120,9 +118,7 @@ static void trace_hll_call(struct ain_library *lib, struct ain_hll_function *f,
 		case AIN_STRING: {
 			struct string ***strs = _args;
 			struct string *s = *strs[i];
-			char *u = sjis2utf(s->text, s->size);
-			sys_message("\"%s\"", u);
-			free(u);
+			sys_message("\"%s\"", display_sjis0(s->text));
 			break;
 		}
 		case AIN_BOOL:
@@ -156,7 +152,7 @@ static void trace_hll_call(struct ain_library *lib, struct ain_hll_function *f,
 		sys_message(" -> %f", r->f);
 		break;
 	case AIN_STRING:
-		sys_message(" -> \"%s\"", ((struct string*)r->ref)->text);
+		sys_message(" -> \"%s\"", display_sjis0(((struct string*)r->ref)->text));
 		break;
 	case AIN_BOOL:
 		sys_message(" -> %s", r->i ? "true" : "false");
@@ -169,10 +165,10 @@ static void trace_hll_call(struct ain_library *lib, struct ain_hll_function *f,
 		union vm_value ***args = _args;
 		switch (f->arguments[i].type.data) {
 		case AIN_REF_INT:
-			sys_message(" (%s=%d)", f->arguments[i].name, (*args[i])->i);
+			sys_message(" (%s=%d)", display_sjis0(f->arguments[i].name), (*args[i])->i);
 			break;
 		case AIN_REF_FLOAT:
-			sys_message(" (%s=%f)", f->arguments[i].name, (*args[i])->f);
+			sys_message(" (%s=%f)", display_sjis0(f->arguments[i].name), (*args[i])->f);
 			break;
 		default:
 			break;
diff --git a/src/hll/ACXLoader.c b/src/hll/ACXLoader.c
index 9e9ac1b..f59c178 100644
--- a/src/hll/ACXLoader.c
+++ b/src/hll/ACXLoader.c
@@ -50,9 +50,9 @@ static bool ACXLoader_Load(struct string *filename)
 	}
 
 	if (error == ACX_ERROR_FILE) {
-		WARNING("acx_load(\"%s\"): %s", path, strerror(errno));
+		WARNING("acx_load(\"%s\"): %s", display_utf0(path), strerror(errno));
 	} else if (error == ACX_ERROR_INVALID) {
-		WARNING("acx_load(\"%s\"): invalid .acx file");
+		WARNING("acx_load(\"%s\"): invalid .acx file", display_utf0(path));
 	}
 	free(path);
 	return !!acx;
diff --git a/src/hll/BanMisc.c b/src/hll/BanMisc.c
index a890d3e..5a9a986 100644
--- a/src/hll/BanMisc.c
+++ b/src/hll/BanMisc.c
@@ -32,7 +32,7 @@ static int BanMisc_SaveStruct(struct page *page, struct string *file_name)
 	char *path = unix_path(file_name->text);
 	FILE *fp = file_open_utf8(path, "w");
 	if (!fp) {
-		WARNING("Failed to open file '%s': %s", path, strerror(errno));
+		WARNING("Failed to open file '%s': %s", display_utf0(path), strerror(errno));
 		free(path);
 		return 0;
 	}
@@ -62,7 +62,7 @@ static int BanMisc_LoadStruct(struct page **_page, struct string *file_name)
 	char *path = unix_path(file_name->text);
 	FILE *fp = file_open_utf8(path, "r");
 	if (!fp) {
-		WARNING("Failed to open file '%s': %s", path, strerror(errno));
+		WARNING("Failed to open file '%s': %s", display_utf0(path), strerror(errno));
 		free(path);
 		return 0;
 	}
diff --git a/src/hll/CrayfishLogViewer.c b/src/hll/CrayfishLogViewer.c
index da9c4cc..f8bff4d 100644
--- a/src/hll/CrayfishLogViewer.c
+++ b/src/hll/CrayfishLogViewer.c
@@ -17,7 +17,9 @@
 #include "system4.h"
 #include "system4/string.h"
 #include "system4/utfsjis.h"
+
 #include "hll.h"
+#include "xsystem4.h"
 
 bool is_opened = false;
 
@@ -43,9 +45,7 @@ HLL_WARN_UNIMPLEMENTED( , void, CrayfishLogViewer, SetWindowTitleName,
 
 static bool CrayfishLogViewer_AddText(struct string *text)
 {
-	char *u = sjis2utf(text->text, 0);
-	sys_message("%s", u);
-	free(u);
+	sys_message("%s", display_sjis0(text->text));
 	return true;
 }
 
diff --git a/src/hll/File.c b/src/hll/File.c
index 838b56f..a68f2f4 100644
--- a/src/hll/File.c
+++ b/src/hll/File.c
@@ -54,7 +54,7 @@ static int File_Open(struct string *filename, int type)
 	char *path = unix_path(filename->text);
 	current_file = file_open_utf8(path, mode);
 	if (!current_file) {
-		WARNING("Failed to open file '%s': %s", path, strerror(errno));
+		WARNING("Failed to open file '%s': %s", display_utf0(path), strerror(errno));
 	}
 
 	free(path);
diff --git a/src/hll/FileOperation.c b/src/hll/FileOperation.c
index 9252f6f..de44e94 100644
--- a/src/hll/FileOperation.c
+++ b/src/hll/FileOperation.c
@@ -55,7 +55,7 @@ static bool get_file_list(struct string *folder_name, struct page **out, bool fo
 
 	UDIR *d = opendir_utf8(dir_name);
 	if (!d) {
-		WARNING("opendir(\"%s\"): %s", dir_name, strerror(errno));
+		WARNING("opendir(\"%s\"): %s", display_utf0(dir_name), strerror(errno));
 		free(dir_name);
 		return false;
 	}
@@ -75,7 +75,7 @@ static bool get_file_list(struct string *folder_name, struct page **out, bool fo
 
 		ustat s;
 		if (stat_utf8(utf8_path, &s) < 0) {
-			WARNING("stat(\"%s\"): %s", utf8_path, strerror(errno));
+			WARNING("stat(\"%s\"): %s", display_utf0(utf8_path), strerror(errno));
 			goto loop_next;
 		}
 		if (folders) {
diff --git a/src/hll/Gpx2Plus.c b/src/hll/Gpx2Plus.c
index 2deaf6f..10363ef 100644
--- a/src/hll/Gpx2Plus.c
+++ b/src/hll/Gpx2Plus.c
@@ -420,7 +420,7 @@ static void Gpx2Plus_SetFontName(struct string *name)
 	else if (!strcmp(u, "ＭＳ 明朝"))
 		gfx_set_font_face(FONT_MINCHO);
 	else
-		WARNING("Unknown font name '%s'", u);
+		WARNING("Unknown font name '%s'", display_utf0(u));
 	free(u);
 }
 
diff --git a/src/hll/MainEXFile.c b/src/hll/MainEXFile.c
index 82c9d73..2b957fd 100644
--- a/src/hll/MainEXFile.c
+++ b/src/hll/MainEXFile.c
@@ -105,7 +105,7 @@ static void MainEXFile_ModuleInit(void)
 {
 	// load .ex file
 	if (!config.ex_path || !(ex = ex_read_file(config.ex_path)))
-		ERROR("Failed to load .ex file: %s", config.ex_path);
+		ERROR("Failed to load .ex file: %s", display_utf0(config.ex_path));
 
 	// assign IDs to each ex_value
 	int id = 1;
diff --git a/src/hll/MsgSkip.c b/src/hll/MsgSkip.c
index 62cc0f4..c35ed46 100644
--- a/src/hll/MsgSkip.c
+++ b/src/hll/MsgSkip.c
@@ -41,7 +41,7 @@ static void msgskip_save(void)
 {
 	FILE *f = file_open_utf8(save_path, "wb");
 	if (!f)
-		ERROR("fopen: '%s': %s", save_path, strerror(errno));
+		ERROR("fopen: '%s': %s", display_utf0(save_path), strerror(errno));
 
 	fwrite(flags, nr_flags, 1, f);
 	fclose(f);
@@ -66,7 +66,7 @@ static int MsgSkip_Init(struct string *name)
 		data_size = ain->nr_messages;
 	}
 	if (data_size != (size_t)ain->nr_messages) {
-		WARNING("Incorrect file size for MsgSkip file '%s'", save_path);
+		WARNING("Incorrect file size for MsgSkip file '%s'", display_utf0(save_path));
 		if (data_size < (size_t)ain->nr_messages) {
 			data = xrealloc_array(data, data_size, ain->nr_messages, 1);
 		}
diff --git a/src/hll/OutputLog.c b/src/hll/OutputLog.c
index 440889d..6ce06bc 100644
--- a/src/hll/OutputLog.c
+++ b/src/hll/OutputLog.c
@@ -15,15 +15,17 @@
  */
 
 #include <stdio.h>
-#include "hll.h"
+
+#include "system4.h"
 #include "system4/string.h"
 #include "system4/utfsjis.h"
 
+#include "hll.h"
+#include "xsystem4.h"
+
 static void OutputLog_Output(int handle, struct string *s)
 {
-	char *u = sjis2utf(s->text, s->size);
-	printf("%s", u);
-	free(u);
+	sys_message("%s", display_sjis0(s->text));
 }
 
 HLL_WARN_UNIMPLEMENTED(0, int,  OutputLog, Create, struct string *name);
diff --git a/src/hll/PassRegister.c b/src/hll/PassRegister.c
index 2405590..5d7de44 100644
--- a/src/hll/PassRegister.c
+++ b/src/hll/PassRegister.c
@@ -67,18 +67,18 @@ static void write_register(unsigned handle)
 
 	FILE *f = file_open_utf8(reg->filename, "wb");
 	if (!f) {
-		WARNING("Failed to open PassRegister file: %s: %s", reg->filename, strerror(errno));
+		WARNING("Failed to open PassRegister file: %s: %s", display_utf0(reg->filename), strerror(errno));
 		return;
 	}
 
 	cJSON *json = register_to_json(handle);
 	char *str = cJSON_Print(json);
 	if (fwrite(str, strlen(str), 1, f) != 1) {
-		WARNING("Failed to write PassRegister file: %s: %s", reg->filename, strerror(errno));
+		WARNING("Failed to write PassRegister file: %s: %s", display_utf0(reg->filename), strerror(errno));
 		goto end;
 	}
 	if (fclose(f)) {
-		WARNING("Error writing to save file: %s: %s", reg->filename, strerror(errno));
+		WARNING("Error writing to save file: %s: %s", display_utf0(reg->filename), strerror(errno));
 		goto end;
 	}
 end:
diff --git a/src/hll/SengokuRanceFont.c b/src/hll/SengokuRanceFont.c
index e19f779..00fedc1 100644
--- a/src/hll/SengokuRanceFont.c
+++ b/src/hll/SengokuRanceFont.c
@@ -297,7 +297,7 @@ static void SengokuRanceFont_ModuleInit(void)
 	char path[PATH_MAX];
 
 	if (!(dir = opendir_utf8(config.game_dir))) {
-		ERROR("Failed to open directory: %s", config.game_dir);
+		ERROR("Failed to open directory: %s", display_utf0(config.game_dir));
 	}
 
 	while ((d_name = readdir_utf8(dir))) {
@@ -310,7 +310,7 @@ static void SengokuRanceFont_ModuleInit(void)
 		snprintf(path, PATH_MAX, "%s/%s", config.game_dir, d_name);
 		fontlib = fnl_open(path);
 		if (!(fontlib = fnl_open(path)))
-			ERROR("Error opening font library '%s'", path);
+			ERROR("Error opening font library '%s'", display_utf0(path));
 		if (fontlib->nr_fonts < 1)
 			ERROR("Font library doesn't contain any fonts");
 		break;
diff --git a/src/hll/VSFile.c b/src/hll/VSFile.c
index 9c3f967..0800ce6 100644
--- a/src/hll/VSFile.c
+++ b/src/hll/VSFile.c
@@ -25,6 +25,7 @@
 
 #include "little_endian.h"
 #include "hll.h"
+#include "xsystem4.h"
 
 static bool vs_read = false;
 static FILE *vs_file = NULL;
@@ -99,7 +100,7 @@ static bool vsfile_open(struct string *filename, bool read)
 	vs_read = read;
 	vs_file = file_open_utf8(u, read ? "rb" : "wb");
 	if (!vs_file) {
-		WARNING("Failed to open '%s': %s", u, strerror(errno));
+		WARNING("Failed to open '%s': %s", display_utf0(u), strerror(errno));
 	}
 	free(u);
 	return !!vs_file;
diff --git a/src/resume.c b/src/resume.c
index cb9fa8b..30e563f 100644
--- a/src/resume.c
+++ b/src/resume.c
@@ -344,7 +344,7 @@ void vm_load_image(const char *key, const char *path)
 {
 	cJSON *save = read_image(key, path);
 	if (!save) {
-		VM_ERROR("Failed to read VM image: '%s'", path);
+		VM_ERROR("Failed to read VM image: '%s'", display_sjis0(path));
 	}
 	cJSON *ip = type_check(cJSON_Number, cJSON_GetObjectItem(save, "ip"));
 	load_heap(type_check(cJSON_Array, cJSON_GetObjectItem(save, "heap")));
diff --git a/src/savedata.c b/src/savedata.c
index 9051b45..b0a8d1d 100644
--- a/src/savedata.c
+++ b/src/savedata.c
@@ -103,7 +103,7 @@ int save_json(const char *filename, cJSON *json)
 	char *path = savedir_path(filename);
 	FILE *f = file_open_utf8(path, "w");
 	if (!f) {
-		WARNING("Failed to open save file: %s: %s", filename, strerror(errno));
+		WARNING("Failed to open save file: %s: %s", display_utf0(filename), strerror(errno));
 		free(path);
 		return 0;
 	}
@@ -117,7 +117,7 @@ int save_json(const char *filename, cJSON *json)
 		return 0;
 	}
 	if (fclose(f)) {
-		WARNING("Error writing save to file: %s: %s", filename, strerror(errno));
+		WARNING("Error writing save to file: %s: %s", display_utf0(filename), strerror(errno));
 		free(str);
 		return 0;
 	}
@@ -159,7 +159,7 @@ int save_group(const char *keyname, const char *filename, const char *group_name
 	int group;
 
 	if ((group = get_group_index(group_name)) < 0) {
-		WARNING("Unregistered global group: %s", group_name);
+		WARNING("Unregistered global group: %s", display_sjis0(group_name));
 		return 0;
 	}
 
@@ -281,7 +281,7 @@ static cJSON *read_save_file(const char *filename)
 	char *path = savedir_path(filename);
 
 	if (!(f = file_open_utf8(path, "r"))) {
-		WARNING("Failed to open save file: %s: %s", filename, strerror(errno));
+		WARNING("Failed to open save file: %s: %s", display_utf0(filename), strerror(errno));
 		free(path);
 		return NULL;
 	}
@@ -294,7 +294,7 @@ static cJSON *read_save_file(const char *filename)
 	buf = xmalloc(len+1);
 	buf[len] = '\0';
 	if (fread(buf, len, 1, f) != 1) {
-		WARNING("Failed to read save file: %s", filename);
+		WARNING("Failed to read save file: %s", display_utf0(filename));
 		free(buf);
 		return 0;
 	}
@@ -318,7 +318,7 @@ int load_globals(const char *keyname, const char *filename, const char *group_na
 
 	cJSON *key = cJSON_GetObjectItem(save, "key");
 	if (!key || strcmp(keyname, cJSON_GetStringValue(key)))
-		VM_ERROR("Attempted to load save data with wrong key: %s", keyname);
+		VM_ERROR("Attempted to load save data with wrong key: %s", display_sjis0(keyname));
 
 	if (group_name) {
 		// TODO?
@@ -373,7 +373,7 @@ int delete_save_file(const char *filename)
 		return 0;
 	}
 	if (remove(path)) {
-		WARNING("remove(\"%s\"): %s", path, strerror(errno));
+		WARNING("remove(\"%s\"): %s", display_utf0(path), strerror(errno));
 		free(path);
 		return 0;
 	}
diff --git a/src/sprite.c b/src/sprite.c
index 6595012..b1e7553 100644
--- a/src/sprite.c
+++ b/src/sprite.c
@@ -124,7 +124,7 @@ int sprite_save_cg(struct sact_sprite *sp, const char *path)
 	};
 	FILE *fp = file_open_utf8(path, "wb");
 	if (!fp) {
-		WARNING("Failed to open %s: %s", path, strerror(errno));
+		WARNING("Failed to open %s: %s", display_utf0(path), strerror(errno));
 		free(pixels);
 		return 0;
 	}
diff --git a/src/text.c b/src/text.c
index d73675d..89d7a83 100644
--- a/src/text.c
+++ b/src/text.c
@@ -239,9 +239,7 @@ void gfx_set_font_name(const char *name)
 	} else if (!strcmp(name, gothic_name)) {
 		font_metrics.face = FONT_GOTHIC;
 	} else {
-		char *u = sjis2utf(name, 0);
-		WARNING("Unhandled font name: \"%s\"", u);
-		free(u);
+		WARNING("Unhandled font name: \"%s\"", display_sjis0(name));
 	}
 }
 
@@ -249,7 +247,7 @@ static void get_glyph(TTF_Font *f, Texture *dst, char *msg, SDL_Color color)
 {
 	SDL_Surface *s = TTF_RenderUTF8_Blended(f, msg, color);
 	if (!s) {
-		WARNING("Text rendering failed: %s", msg);
+		WARNING("Text rendering failed: %s", display_utf0(msg));
 		return;
 	}
 	if (s->format->format != SDL_PIXELFORMAT_RGBA32) {
diff --git a/src/vm.c b/src/vm.c
index 3676257..61578d3 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -256,7 +256,7 @@ static int alloc_scenario_page(const char *fname)
 	struct ain_function *f;
 
 	if ((fno = get_function_by_name(fname)) < 0)
-		VM_ERROR("Invalid scenario function: %s", fname);
+		VM_ERROR("Invalid scenario function: %s", display_sjis0(fname));
 	f = &ain->functions[fno];
 
 	slot = heap_alloc_slot(VM_PAGE);
@@ -444,30 +444,25 @@ static void system_call(enum syscall_code code)
 	}
 	case SYS_OUTPUT: {// system.Output(string szText)
 		struct string *str = stack_peek_string(0);
-		char *utf = sjis2utf(str->text, str->size);
-		sys_message("%s", utf);
-		free(utf);
+		sys_message("%s", display_sjis0(str->text));
 		// XXX: caller S_POPs
 		break;
 	}
 	case SYS_MSGBOX: {
 		struct string *str = stack_peek_string(0);
-		char *utf = sjis2utf(str->text, str->size);
-		SDL_ShowSimpleMessageBox(0, "xsystem4", utf, NULL);
-		free(utf);
+		SDL_ShowSimpleMessageBox(0, "xsystem4", display_sjis0(str->text), NULL);
 		// XXX: caller S_POPs
 		break;
 	}
 	case SYS_MSGBOX_OK_CANCEL: {
 		int result = 0;
 		struct string *str = stack_peek_string(0);
-		char *utf = sjis2utf(str->text, str->size);
 
 		const SDL_MessageBoxData mbox = {
 			SDL_MESSAGEBOX_INFORMATION,
 			NULL,
 			"xsystem4",
-			utf,
+			display_sjis0(str->text),
 			SDL_arraysize(buttons),
 			buttons,
 			NULL
@@ -475,8 +470,6 @@ static void system_call(enum syscall_code code)
 		if (SDL_ShowMessageBox(&mbox, &result)) {
 			WARNING("Error displaying message box");
 		}
-		// ...
-		free(utf);
 		heap_unref(stack_pop().i);
 		stack_push(result);
 		break;
@@ -542,9 +535,7 @@ static void system_call(enum syscall_code code)
 	}
 	case SYS_ERROR: {// system.Error(string szText)
 		struct string *str = stack_peek_string(0);
-		char *utf = sjis2utf(str->text, str->size);
-		sys_warning("*GAME ERROR*: %s\n", utf);
-		free(utf);
+		sys_warning("*GAME ERROR*: %s\n", display_sjis0(str->text));
 		// XXX: caller S_POPs
 		break;
 	}
@@ -961,11 +952,10 @@ static enum opcode execute_instruction(enum opcode opcode)
 		int file = stack_pop().i; // filename
 		int expr = stack_pop().i; // expression
 		if (!stack_pop().i) {
-			char *filename = sjis2utf(heap_get_string(file)->text, heap[file].s->size);
-			char *value = sjis2utf(heap_get_string(expr)->text, heap[expr].s->size);
-			sys_message("Assertion failed at %s:%d: %s\n", filename, line, value);
-			free(filename);
-			free(value);
+			sys_message("Assertion failed at %s:%d: %s\n",
+					display_sjis0(heap_get_string(file)->text),
+					line,
+					display_sjis0(heap_get_string(expr)->text));
 			vm_exit(1);
 		}
 		heap_unref(file);
@@ -2347,19 +2337,13 @@ static void describe_page(struct page *page)
 		sys_message("GLOBAL_PAGE\n");
 		break;
 	case LOCAL_PAGE:
-		u = sjis2utf(ain->functions[page->index].name, 0);
-		sys_message("LOCAL_PAGE: %s\n", u);
-		free(u);
+		sys_message("LOCAL_PAGE: %s\n", display_sjis0(ain->functions[page->index].name));
 		break;
 	case STRUCT_PAGE:
-		u = sjis2utf(ain->structures[page->index].name, 0);
-		sys_message("STRUCT_PAGE: %s\n", u);
-		free(u);
+		sys_message("STRUCT_PAGE: %s\n", display_sjis0(ain->structures[page->index].name));
 		break;
 	case ARRAY_PAGE:
-		u = sjis2utf(ain_strtype(ain, page->a_type, page->array.struct_type), 0);
-		sys_message("ARRAY_PAGE: %s\n", u);
-		free(u);
+		sys_message("ARRAY_PAGE: %s\n", display_sjis0(ain_strtype(ain, page->a_type, page->array.struct_type)));
 		break;
 	case DELEGATE_PAGE:
 		// TODO: list function names
@@ -2377,9 +2361,7 @@ static void describe_slot(size_t slot)
 		break;
 	case VM_STRING:
 		if (heap[slot].s) {
-			char *u = sjis2utf(heap[slot].s->text, heap[slot].s->size);
-			sys_message("STRING: %s\n", u);
-			free(u);
+			sys_message("STRING: %s\n", display_sjis0(heap[slot].s->text));
 		} else {
 			sys_message("STRING: NULL\n");
 		}