diff --git a/src/boot/logutils.c b/src/boot/logutils.c
index a501a32bcd..aa67313134 100644
--- a/src/boot/logutils.c
+++ b/src/boot/logutils.c
@@ -84,19 +84,24 @@ void LogUtils_CheckBoundary(const char* name, s32 value, s32 unk, const char* fi
     u32 mask = (unk - 1);
 
     if (value & mask) {
-        PRINTF(VT_COL(RED, WHITE) "%s %d:%s(%08x) は バウンダリ(%d)違反です\n" VT_RST, file, line, name, value, unk);
+        PRINTF(VT_COL(RED, WHITE) T("%s %d:%s(%08x) は バウンダリ(%d)違反です\n",
+                                    "%s %d:%s(%08x) is a boundary (%d) violation\n") VT_RST,
+               file, line, name, value, unk);
     }
 }
 
 void LogUtils_CheckNullPointer(const char* exp, void* ptr, const char* file, int line) {
     if (ptr == NULL) {
-        PRINTF(VT_COL(RED, WHITE) "%s %d:%s は はヌルポインタです\n" VT_RST, file, line, exp);
+        PRINTF(VT_COL(RED, WHITE) T("%s %d:%s は はヌルポインタです\n", "%s %d:%s is a null pointer\n") VT_RST, file,
+               line, exp);
     }
 }
 
 void LogUtils_CheckValidPointer(const char* exp, void* ptr, const char* file, int line) {
     if (ptr == NULL || (u32)ptr < 0x80000000 || (0x80000000 + osMemSize) <= (u32)ptr) {
-        PRINTF(VT_COL(RED, WHITE) "%s %d:ポインタ %s(%08x) が異常です\n" VT_RST, file, line, exp, ptr);
+        PRINTF(VT_COL(RED, WHITE) T("%s %d:ポインタ %s(%08x) が異常です\n", "%s %d: Pointer %s(%08x) is invalid\n")
+                   VT_RST,
+               file, line, exp, ptr);
     }
 }
 
diff --git a/src/boot/stackcheck.c b/src/boot/stackcheck.c
index aa0972d2f8..e33ec5b197 100644
--- a/src/boot/stackcheck.c
+++ b/src/boot/stackcheck.c
@@ -20,7 +20,9 @@ void StackCheck_Init(StackEntry* entry, void* stackBottom, void* stackTop, u32 i
         iter = sStackInfoListStart;
         while (iter) {
             if (iter == entry) {
-                PRINTF(VT_COL(RED, WHITE) "stackcheck_init: %08x は既にリスト中にある\n" VT_RST, entry);
+                PRINTF(VT_COL(RED, WHITE) T("stackcheck_init: %08x は既にリスト中にある\n",
+                                            "stackcheck_init: %08x is already in the list\n") VT_RST,
+                       entry);
                 return;
             }
             iter = iter->next;
@@ -68,7 +70,9 @@ void StackCheck_Cleanup(StackEntry* entry) {
         }
     }
     if (inconsistency) {
-        PRINTF(VT_COL(RED, WHITE) "stackcheck_cleanup: %08x リスト不整合です\n" VT_RST, entry);
+        PRINTF(VT_COL(RED, WHITE) T("stackcheck_cleanup: %08x リスト不整合です\n",
+                                    "stackcheck_cleanup: %08x list inconsistent\n") VT_RST,
+               entry);
     }
 }
 
diff --git a/src/code/code_800430A0.c b/src/code/code_800430A0.c
index a13ecce7e1..64c1eee817 100644
--- a/src/code/code_800430A0.c
+++ b/src/code/code_800430A0.c
@@ -42,10 +42,11 @@ void DynaPolyActor_UpdateCarriedActorPos(CollisionContext* colCtx, s32 bgId, Act
 
                 PRINTF(VT_FGCOL(RED));
                 //! @bug file and line are not passed to PRINTF
-                // "Position is not valid"
-                PRINTF(
-                    "BGCheckCollection_typicalActorPos():位置が妥当ではありません。\npos (%f,%f,%f) file:%s line:%d\n",
-                    pos.x, pos.y, pos.z);
+                PRINTF(T("BGCheckCollection_typicalActorPos():位置が妥当ではありません。\n"
+                         "pos (%f,%f,%f) file:%s line:%d\n",
+                         "BGCheckCollection_typicalActorPos(): Position is not valid. \n"
+                         "pos (%f,%f,%f) file:%s line:%d\n"),
+                       pos.x, pos.y, pos.z);
                 PRINTF(VT_RST);
             }
 #endif
diff --git a/src/code/debug_malloc.c b/src/code/debug_malloc.c
index ccccbb154a..3e31f78455 100644
--- a/src/code/debug_malloc.c
+++ b/src/code/debug_malloc.c
@@ -97,8 +97,8 @@ void* DebugArena_Calloc(u32 num, u32 size) {
 
 #if OOT_DEBUG
 void DebugArena_Display(void) {
-    // "Zelda heap display" ("Zelda" should probably have been changed to "Debug")
-    PRINTF("ゼルダヒープ表示\n");
+    // Likely copypasted from ZeldaArena_Display, should say "Debug"
+    PRINTF(T("ゼルダヒープ表示\n", "Zelda heap display\n"));
     __osDisplayArena(&sDebugArena);
 }
 #endif
diff --git a/src/code/sched.c b/src/code/sched.c
index 1deaa74b23..77860aa511 100644
--- a/src/code/sched.c
+++ b/src/code/sched.c
@@ -176,8 +176,7 @@ void Sched_QueueTask(Scheduler* sc, OSScTask* task) {
            463);
 
     if (type == M_AUDTASK) {
-        // "You have entered an audio task"
-        SCHED_DEBUG_PRINTF("オーディオタスクをエントリしました\n");
+        SCHED_DEBUG_PRINTF(T("オーディオタスクをエントリしました\n", "You have entered an audio task\n"));
 
         // Add to audio queue
         if (sc->audioListTail != NULL) {
@@ -191,8 +190,7 @@ void Sched_QueueTask(Scheduler* sc, OSScTask* task) {
         sc->doAudio = true;
     } else {
 
-        // "Entered graph task"
-        SCHED_DEBUG_PRINTF("グラフタスクをエントリしました\n");
+        SCHED_DEBUG_PRINTF(T("グラフタスクをエントリしました\n", "Entered graph task\n"));
 
         // Add to graphics queue
         if (sc->gfxListTail != NULL) {
@@ -606,8 +604,7 @@ void Sched_ThreadEntry(void* arg) {
     Scheduler* sc = (Scheduler*)arg;
 
     while (true) {
-        // "%08d: standby"
-        SCHED_DEBUG_PRINTF("%08d:待機中\n", (u32)OS_CYCLES_TO_USEC(osGetTime()));
+        SCHED_DEBUG_PRINTF(T("%08d:待機中\n", "%08d: standby\n"), (u32)OS_CYCLES_TO_USEC(osGetTime()));
 
         // Await interrupt messages, either from the OS, IrqMgr, or another thread
         osRecvMesg(&sc->interruptQueue, &msg, OS_MESG_BLOCK);
diff --git a/src/code/z_eff_shield_particle.c b/src/code/z_eff_shield_particle.c
index b1e46cadd0..c66934a4ff 100644
--- a/src/code/z_eff_shield_particle.c
+++ b/src/code/z_eff_shield_particle.c
@@ -19,7 +19,8 @@ void EffectShieldParticle_Init(void* thisx, void* initParamsx) {
         this->numElements = initParams->numElements;
         if (this->numElements > ARRAY_COUNT(this->elements)) {
             PRINTF(VT_FGCOL(RED));
-            PRINTF("EffectShieldParticle_ct():パーティクル数がオーバしてます。\n");
+            PRINTF(T("EffectShieldParticle_ct():パーティクル数がオーバしてます。\n",
+                     "EffectShieldParticle_ct(): Number of particles exceeded.\n"));
             PRINTF(VT_RST);
             return;
         }
diff --git a/src/code/z_jpeg.c b/src/code/z_jpeg.c
index 38aec24781..deee31dfde 100644
--- a/src/code/z_jpeg.c
+++ b/src/code/z_jpeg.c
@@ -178,22 +178,23 @@ void Jpeg_ParseMarkers(u8* ptr, JpegContext* ctx) {
                 case MARKER_SOF: {
                     // Start of Frame, stores important metadata of the image.
                     // Only used for extracting the sampling factors (ctx->mode).
-                    PRINTF("MARKER_SOF   %d "
-                           "精度%02x " // "accuracy"
-                           "垂直%d "   // "vertical"
-                           "水平%d "   // "horizontal"
-                           "compo%02x "
-                           "(1:Y)%d (H0=2,V0=1(422) or 2(420))%02x (量子化テーブル)%02x "
-                           "(2:Cb)%d (H1=1,V1=1)%02x (量子化テーブル)%02x "
-                           "(3:Cr)%d (H2=1,V2=1)%02x (量子化テーブル)%02x\n",
+                    PRINTF(T("MARKER_SOF   %d "
+                             "精度%02x 垂直%d 水平%d compo%02x "
+                             "(1:Y)%d (H0=2,V0=1(422) or 2(420))%02x (量子化テーブル)%02x "
+                             "(2:Cb)%d (H1=1,V1=1)%02x (量子化テーブル)%02x "
+                             "(3:Cr)%d (H2=1,V2=1)%02x (量子化テーブル)%02x\n",
+                             "MARKER_SOF   %d "
+                             "accuracy%02x vertical%d horizontal%d compo%02x "
+                             "(1:Y)%d (H0=2,V0=1(422) or 2(420))%02x (quantization tables)%02x "
+                             "(2:Cb)%d (H1=1,V1=1)%02x (quantization tables)%02x "
+                             "(3:Cr)%d (H2=1,V2=1)%02x (quantization tables)%02x\n"),
                            Jpeg_GetUnalignedU16(ptr),
-                           ptr[2],                        // precision
-                           Jpeg_GetUnalignedU16(ptr + 3), // height
-                           Jpeg_GetUnalignedU16(ptr + 5), // width
-                           ptr[7],                        // component count (assumed to be 3)
-                           ptr[8], ptr[9], ptr[10],       // Y component
-                           ptr[11], ptr[12], ptr[13],     // Cb component
-                           ptr[14], ptr[15], ptr[16]      // Cr component
+                           // precision, height, width, component count (assumed to be 3)
+                           ptr[2], Jpeg_GetUnalignedU16(ptr + 3), Jpeg_GetUnalignedU16(ptr + 5), ptr[7],
+                           //
+                           ptr[8], ptr[9], ptr[10],   // Y component
+                           ptr[11], ptr[12], ptr[13], // Cb component
+                           ptr[14], ptr[15], ptr[16]  // Cr component
                     );
 
                     if (ptr[9] == 0x21) {
diff --git a/src/code/z_kanfont.c b/src/code/z_kanfont.c
index 30fa15d41e..81c83ce346 100644
--- a/src/code/z_kanfont.c
+++ b/src/code/z_kanfont.c
@@ -77,7 +77,7 @@ void Font_LoadOrderedFont(Font* font) {
     fontBufIndex = 0;
     for (codePointIndex = 0; font->msgBuf[codePointIndex] != MESSAGE_END; codePointIndex++) {
         if (codePointIndex > (len * 1)) {
-            PRINTF("ＥＲＲＯＲ！！  エラー！！！  error───！！！！\n");
+            PRINTF(T("ＥＲＲＯＲ！！  エラー！！！  error───！！！！\n", "ERROR!!  Error!!!  error───!!!!\n"));
             return;
         }
 
diff --git a/src/code/z_map_mark.c b/src/code/z_map_mark.c
index eaaf4c1e72..4fc7d7cfab 100644
--- a/src/code/z_map_mark.c
+++ b/src/code/z_map_mark.c
@@ -72,8 +72,8 @@ void MapMark_DrawForDungeon(PlayState* play) {
     interfaceCtx = &play->interfaceCtx;
 
     if ((gMapData != NULL) && (play->interfaceCtx.mapRoomNum >= gMapData->dgnMinimapCount[dungeon])) {
-        // "Room number exceeded, yikes %d/%d  MapMarkDraw processing interrupted"
-        PRINTF(VT_COL(RED, WHITE) "部屋番号がオーバーしてるで,ヤバイで %d/%d  \nMapMarkDraw の処理を中断します\n",
+        PRINTF(VT_COL(RED, WHITE) T("部屋番号がオーバーしてるで,ヤバイで %d/%d  \nMapMarkDraw の処理を中断します\n",
+                                    "Room number exceeded, yikes %d/%d  \nMapMarkDraw processing interrupted\n"),
                VT_RST, play->interfaceCtx.mapRoomNum, gMapData->dgnMinimapCount[dungeon]);
         return;
     }
diff --git a/src/code/z_skin_matrix.c b/src/code/z_skin_matrix.c
index 98f8fc4d24..e5d0dfe99b 100644
--- a/src/code/z_skin_matrix.c
+++ b/src/code/z_skin_matrix.c
@@ -253,7 +253,8 @@ s32 SkinMatrix_Invert(MtxF* src, MtxF* dest) {
             // Therefore src is a singular matrix (0 determinant).
 
             PRINTF(VT_COL(YELLOW, BLACK));
-            PRINTF("Skin_Matrix_InverseMatrix():逆行列つくれません\n");
+            PRINTF(T("Skin_Matrix_InverseMatrix():逆行列つくれません\n",
+                     "Skin_Matrix_InverseMatrix(): Cannot create inverse matrix\n"));
             PRINTF(VT_RST);
             return 2;
         }
@@ -589,7 +590,8 @@ Mtx* SkinMatrix_MtxFToNewMtx(GraphicsContext* gfxCtx, MtxF* src) {
     Mtx* mtx = GRAPH_ALLOC(gfxCtx, sizeof(Mtx));
 
     if (mtx == NULL) {
-        PRINTF("Skin_Matrix_to_Mtx_new() 確保失敗:NULLを返して終了\n");
+        PRINTF(T("Skin_Matrix_to_Mtx_new() 確保失敗:NULLを返して終了\n",
+                 "Skin_Matrix_to_Mtx_new() allocation failed: Return NULL and exit\n"));
         return NULL;
     }
     SkinMatrix_MtxFToMtx(src, mtx);