diff --git a/game/fake_iso.txt b/game/fake_iso.txt
index 7316dfcb8..e6eeab6b9 100644
--- a/game/fake_iso.txt
+++ b/game/fake_iso.txt
@@ -10,5 +10,6 @@ TWEAKVAL.MUS resources/TWEAKVAL.MUS
 VAGDIR.AYB resources/VAGDIR.AYB
 SCREEN1.USA resources/SCREEN1.USA
 0COMMON.TXT out/iso/0COMMON.TXT
+5COMMON.TXT out/iso/5COMMON.TXT
 0TEST.TXT out/iso/0TEST.TXT
 VI1.DGO out/iso/VI1.DGO
\ No newline at end of file
diff --git a/game/graphics/dma/gs.h b/game/graphics/dma/gs.h
index 343176f16..f234bb157 100644
--- a/game/graphics/dma/gs.h
+++ b/game/graphics/dma/gs.h
@@ -250,7 +250,22 @@ struct GsTex0 {
 
   u32 tbp0() const { return data & 0b11'1111'1111'1111; }
   u32 tbw() const { return (data >> 14) & 0b111111; }
-  u32 psm() const { return (data >> 20) & 0b111111; }
+  enum class PSM {
+    PSMCT32 = 0,
+    PSMCT24 = 1,
+    PSMCT16 = 2,
+    PSMCT16S = 0b1010,
+    PSMT8 = 0b10011,
+    PSMT4 = 0b10100,
+    PSMT8H = 0b011011,
+    PSMT4HL = 0b100100,
+    PSMT4HH = 0b101100,
+    PSMZ32 = 0b110000,
+    PSMZ24 = 0b110001,
+    PSMZ16 = 0b110010,
+    PSMZ16S = 0b111010
+  };
+  PSM psm() const { return (PSM)((data >> 20) & 0b111111); }
   u32 tw() const { return (data >> 26) & 0b1111; }
   u32 th() const { return (data >> 30) & 0b1111; }
   enum class TextureFunction : u8 {
diff --git a/game/graphics/gfx.cpp b/game/graphics/gfx.cpp
index b8669be7e..f26655470 100644
--- a/game/graphics/gfx.cpp
+++ b/game/graphics/gfx.cpp
@@ -105,9 +105,9 @@ void texture_upload_now(const u8* tpage, int mode, u32 s7_ptr) {
   }
 }
 
-void texture_relocate(u32 destination, u32 source) {
+void texture_relocate(u32 destination, u32 source, u32 format) {
   if (g_settings.renderer) {
-    g_settings.renderer->texture_relocate(destination, source);
+    g_settings.renderer->texture_relocate(destination, source, format);
   }
 }
 
diff --git a/game/graphics/gfx.h b/game/graphics/gfx.h
index 1467ad903..985ed182c 100644
--- a/game/graphics/gfx.h
+++ b/game/graphics/gfx.h
@@ -29,7 +29,7 @@ struct GfxRendererModule {
   std::function<u32()> sync_path;
   std::function<void(const void*, u32)> send_chain;
   std::function<void(const u8*, int, u32)> texture_upload_now;
-  std::function<void(u32, u32)> texture_relocate;
+  std::function<void(u32, u32, u32)> texture_relocate;
 
   GfxPipeline pipeline;
   const char* name;
@@ -74,6 +74,6 @@ u32 vsync();
 u32 sync_path();
 void send_chain(const void* data, u32 offset);
 void texture_upload_now(const u8* tpage, int mode, u32 s7_ptr);
-void texture_relocate(u32 destination, u32 source);
+void texture_relocate(u32 destination, u32 source, u32 format);
 
 }  // namespace Gfx
diff --git a/game/graphics/opengl_renderer/DirectRenderer.cpp b/game/graphics/opengl_renderer/DirectRenderer.cpp
index 0bcb603e4..c1f2ec873 100644
--- a/game/graphics/opengl_renderer/DirectRenderer.cpp
+++ b/game/graphics/opengl_renderer/DirectRenderer.cpp
@@ -180,7 +180,12 @@ void DirectRenderer::upload_texture(TextureRecord* tex) {
 }
 
 void DirectRenderer::update_gl_texture(SharedRenderState* render_state) {
-  auto tex = render_state->texture_pool->lookup(m_texture_state.texture_base_ptr);
+  TextureRecord* tex = nullptr;
+  if (m_texture_state.using_mt4hh) {
+    tex = render_state->texture_pool->lookup_mt4hh(m_texture_state.texture_base_ptr);
+  } else {
+    tex = render_state->texture_pool->lookup(m_texture_state.texture_base_ptr);
+  }
   assert(tex);
   // fmt::print("Successful texture lookup! {} {}\n", tex->page_name, tex->name);
 
@@ -475,6 +480,7 @@ void DirectRenderer::handle_tex0_1(u64 val, SharedRenderState* render_state) {
   if (m_texture_state.current_register != reg) {
     flush_pending(render_state);
     m_texture_state.texture_base_ptr = reg.tbp0();
+    m_texture_state.using_mt4hh = reg.psm() == GsTex0::PSM::PSMT4HH;
     m_prim_gl_state_needs_gl_update = true;
     m_texture_state.current_register = reg;
   }
diff --git a/game/graphics/opengl_renderer/DirectRenderer.h b/game/graphics/opengl_renderer/DirectRenderer.h
index f8fd87dcb..b9848cb75 100644
--- a/game/graphics/opengl_renderer/DirectRenderer.h
+++ b/game/graphics/opengl_renderer/DirectRenderer.h
@@ -120,6 +120,7 @@ class DirectRenderer : public BucketRenderer {
   struct TextureState {
     GsTex0 current_register;
     u32 texture_base_ptr = 0;
+    bool using_mt4hh = false;
   } m_texture_state;
 
   // state set through the prim/rgbaq register that doesn't require changing GL stuff
diff --git a/game/graphics/pipelines/opengl.cpp b/game/graphics/pipelines/opengl.cpp
index b89b49fb4..2f9c69cf4 100644
--- a/game/graphics/pipelines/opengl.cpp
+++ b/game/graphics/pipelines/opengl.cpp
@@ -257,9 +257,9 @@ void gl_texture_upload_now(const u8* tpage, int mode, u32 s7_ptr) {
   }
 }
 
-void gl_texture_relocate(u32 destination, u32 source) {
+void gl_texture_relocate(u32 destination, u32 source, u32 format) {
   if (g_gfx_data) {
-    g_gfx_data->texture_pool->relocate(destination, source);
+    g_gfx_data->texture_pool->relocate(destination, source, format);
   }
 }
 
diff --git a/game/graphics/texture/TexturePool.cpp b/game/graphics/texture/TexturePool.cpp
index 80b29adba..185f019e3 100644
--- a/game/graphics/texture/TexturePool.cpp
+++ b/game/graphics/texture/TexturePool.cpp
@@ -160,7 +160,11 @@ void TexturePool::handle_upload_now(const u8* tpage, int mode, const u8* memory_
                   tex_idx, tex_name, mip_idx),
               texture_record->data.data(), ww, hh);
         }
-        set_texture(tex.dest[mip_idx], std::move(texture_record));
+        if (tex.psm == 44) {
+          set_mt4hh_texture(tex.dest[mip_idx], std::move(texture_record));
+        } else {
+          set_texture(tex.dest[mip_idx], std::move(texture_record));
+        }
       }
     } else {
       // texture was #f, skip it.
@@ -174,23 +178,28 @@ void TexturePool::handle_upload_now(const u8* tpage, int mode, const u8* memory_
  * Store a texture in the pool. Location is specified like TBP.
  */
 void TexturePool::set_texture(u32 location, std::unique_ptr<TextureRecord>&& record) {
-  if (m_textures.at(location)) {
-    m_garbage_textures.push_back(std::move(m_textures[location]));
+  if (m_textures.at(location).normal_texture) {
+    m_garbage_textures.push_back(std::move(m_textures[location].normal_texture));
   }
-  m_textures[location] = std::move(record);
+  m_textures[location].normal_texture = std::move(record);
+}
+
+void TexturePool::set_mt4hh_texture(u32 location, std::unique_ptr<TextureRecord>&& record) {
+  if (m_textures.at(location).mt4hh_texture) {
+    m_garbage_textures.push_back(std::move(m_textures[location].mt4hh_texture));
+  }
+  m_textures[location].mt4hh_texture = std::move(record);
 }
 
 /*!
  * Move a texture.
  */
-void TexturePool::relocate(u32 destination, u32 source) {
-  if (m_textures.at(source)) {
-    if (m_textures.at(destination)) {
-      return;  // HACK
-    }
-    m_textures.at(destination) = std::move(m_textures.at(source));
-    fmt::print("Relocated a texture: {}\n", m_textures[destination]->name);
+void TexturePool::relocate(u32 destination, u32 source, u32 format) {
+  auto& src = m_textures.at(source).normal_texture;
+  assert(src);
+  if (format == 44) {
+    m_textures.at(destination).mt4hh_texture = std::move(src);
   } else {
-    assert(false);
+    m_textures.at(destination).normal_texture = std::move(src);
   }
-}
\ No newline at end of file
+}
diff --git a/game/graphics/texture/TexturePool.h b/game/graphics/texture/TexturePool.h
index b65091e50..cc18334fa 100644
--- a/game/graphics/texture/TexturePool.h
+++ b/game/graphics/texture/TexturePool.h
@@ -17,25 +17,39 @@ struct TextureRecord {
   bool on_gpu = false;
 };
 
+struct TextureData {
+  std::unique_ptr<TextureRecord> normal_texture;
+  std::unique_ptr<TextureRecord> mt4hh_texture;
+};
+
 class TexturePool {
  public:
   void handle_upload_now(const u8* tpage, int mode, const u8* memory_base, u32 s7_ptr);
   void set_texture(u32 location, std::unique_ptr<TextureRecord>&& record);
+  void set_mt4hh_texture(u32 location, std::unique_ptr<TextureRecord>&& record);
   TextureRecord* lookup(u32 location) {
-    if (m_textures.at(location)) {
-      return m_textures[location].get();
+    if (m_textures.at(location).normal_texture) {
+      return m_textures[location].normal_texture.get();
     } else {
       return nullptr;
     }
   }
 
-  void relocate(u32 destination, u32 source);
+  TextureRecord* lookup_mt4hh(u32 location) {
+    if (m_textures.at(location).mt4hh_texture) {
+      return m_textures[location].mt4hh_texture.get();
+    } else {
+      return nullptr;
+    }
+  }
+
+  void relocate(u32 destination, u32 source, u32 format);
 
  private:
   TextureConverter m_tex_converter;
 
   // uses tex.dest[mip] indexing. (bytes / 256). Currently only sets the base of a texture.
-  std::array<std::unique_ptr<TextureRecord>, 1024 * 1024 * 4 / 256> m_textures;
+  std::array<TextureData, 1024 * 1024 * 4 / 256> m_textures;
 
   // textures that the game overwrote, but may be still allocated on the GPU.
   // TODO: free these periodically.
diff --git a/game/kernel/kboot.cpp b/game/kernel/kboot.cpp
index 197c346e9..c7e6bbeb9 100644
--- a/game/kernel/kboot.cpp
+++ b/game/kernel/kboot.cpp
@@ -105,6 +105,9 @@ s32 goal_main(int argc, const char* const* argv) {
     masterConfig.language = (u16)Language::German;
   } else if (masterConfig.language == SCE_ITALIAN_LANGUAGE) {
     masterConfig.language = (u16)Language::Italian;
+  } else if (masterConfig.language == SCE_JAPANESE_LANGUAGE) {
+    // Note: this case was added so it is easier to test Japanese fonts.
+    masterConfig.language = (u16)Language::Japanese;
   } else {
     // pick english by default, if language is not supported.
     masterConfig.language = (u16)Language::English;
diff --git a/game/kernel/kmachine.cpp b/game/kernel/kmachine.cpp
index 63072850b..7743d90e5 100644
--- a/game/kernel/kmachine.cpp
+++ b/game/kernel/kmachine.cpp
@@ -449,8 +449,8 @@ void pc_texture_upload_now(u32 page, u32 mode) {
   Gfx::texture_upload_now(Ptr<u8>(page).c(), mode, s7.offset);
 }
 
-void pc_texture_relocate(u32 dst, u32 src) {
-  Gfx::texture_relocate(dst, src);
+void pc_texture_relocate(u32 dst, u32 src, u32 format) {
+  Gfx::texture_relocate(dst, src, format);
 }
 
 /*!
diff --git a/goal_src/engine/gfx/texture.gc b/goal_src/engine/gfx/texture.gc
index 696ebbbf8..92bd1b8e6 100644
--- a/goal_src/engine/gfx/texture.gc
+++ b/goal_src/engine/gfx/texture.gc
@@ -1809,7 +1809,7 @@
 
   (#when PC_PORT
     ;; as far as I know this is only used for fonts which have 1 mip level.
-    (__pc-texture-relocate (/ dest-loc 64) (-> tex dest 0))
+    (__pc-texture-relocate (/ dest-loc 64) (-> tex dest 0) dest-fmt)
     )
 
   ;; loop over mips
diff --git a/goal_src/kernel-defs.gc b/goal_src/kernel-defs.gc
index b72d89652..1715ce523 100644
--- a/goal_src/kernel-defs.gc
+++ b/goal_src/kernel-defs.gc
@@ -183,7 +183,7 @@
 (define-extern __mem-move (function pointer pointer uint none))
 (define-extern __send-gfx-dma-chain (function object object none))
 (define-extern __pc-texture-upload-now (function object object none))
-(define-extern __pc-texture-relocate (function object object none))
+(define-extern __pc-texture-relocate (function object object object none))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;;; ksound - InitSoundScheme