diff --git a/com.unity.toon-graphics-test/Runtime/UTSGraphicsTests.cs b/com.unity.toon-graphics-test/Runtime/UTSGraphicsTests.cs
index b864a4515..30eeb83b8 100644
--- a/com.unity.toon-graphics-test/Runtime/UTSGraphicsTests.cs
+++ b/com.unity.toon-graphics-test/Runtime/UTSGraphicsTests.cs
@@ -28,8 +28,8 @@ public IEnumerator Run(GraphicsTestCase testCase) {
 
 #if UTS_TEST_USE_HDRP && UNITY_STANDALONE_OSX 
 
-        //[TODO-sin: 2025-12-1] ToonTesselation did not work on Metal in HDRP
-        if (sceneFileName.Contains("Tessellation")) {
+        //[TODO-sin: 2025-12-29] UnityToonTessellation never worked on Metal in XR/HDRP combination
+        if (sceneFileName.Contains("_Tess")) {
             Assert.Ignore();
         }
 #endif //UTS_TEST_USE_HDRP && UNITY_STANDALONE_OSX 
diff --git a/com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/MockHMDLoader/UnityChan_CelLook(Tessellation).png b/com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/MockHMDLoader/UnityChan_CelLook_Tess.png
similarity index 100%
rename from com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/MockHMDLoader/UnityChan_CelLook(Tessellation).png
rename to com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/MockHMDLoader/UnityChan_CelLook_Tess.png
diff --git a/com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/MockHMDLoader/UnityChan_CelLook(Tessellation).png.meta b/com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/MockHMDLoader/UnityChan_CelLook_Tess.png.meta
similarity index 100%
rename from com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/MockHMDLoader/UnityChan_CelLook(Tessellation).png.meta
rename to com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/MockHMDLoader/UnityChan_CelLook_Tess.png.meta
diff --git a/com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/None/UnityChan_CelLook(Tessellation).png b/com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/None/UnityChan_CelLook_Tess.png
similarity index 100%
rename from com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/None/UnityChan_CelLook(Tessellation).png
rename to com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/None/UnityChan_CelLook_Tess.png
diff --git a/com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/None/UnityChan_CelLook(Tessellation).png.meta b/com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/None/UnityChan_CelLook_Tess.png.meta
similarity index 100%
rename from com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/None/UnityChan_CelLook(Tessellation).png.meta
rename to com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/None/UnityChan_CelLook_Tess.png.meta
diff --git a/com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/None/UnityChan_CelLook_Tessellation_.png b/com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/None/UnityChan_CelLook_Tessellation_.png
deleted file mode 100644
index 773bbc71a..000000000
Binary files a/com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/None/UnityChan_CelLook_Tessellation_.png and /dev/null differ
diff --git a/com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/None/UnityChan_CelLook_Tessellation_.png.meta b/com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/None/UnityChan_CelLook_Tessellation_.png.meta
deleted file mode 100644
index 062512ceb..000000000
--- a/com.unity.toon-reference-images/HDRP/Linear/OSXEditor_AppleSilicon/Metal/None/UnityChan_CelLook_Tessellation_.png.meta
+++ /dev/null
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diff --git a/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D11/MockHMDLoader/UnityChan_CelLook(Tessellation).png b/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D11/MockHMDLoader/UnityChan_CelLook_Tess.png
similarity index 100%
rename from com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D11/MockHMDLoader/UnityChan_CelLook(Tessellation).png
rename to com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D11/MockHMDLoader/UnityChan_CelLook_Tess.png
diff --git a/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D11/MockHMDLoader/UnityChan_CelLook(Tessellation).png.meta b/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D11/MockHMDLoader/UnityChan_CelLook_Tess.png.meta
similarity index 100%
rename from com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D11/MockHMDLoader/UnityChan_CelLook(Tessellation).png.meta
rename to com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D11/MockHMDLoader/UnityChan_CelLook_Tess.png.meta
diff --git a/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D11/None/UnityChan_CelLook(Tessellation).png b/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D11/None/UnityChan_CelLook_Tess.png
similarity index 100%
rename from com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D11/None/UnityChan_CelLook(Tessellation).png
rename to com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D11/None/UnityChan_CelLook_Tess.png
diff --git a/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D11/None/UnityChan_CelLook(Tessellation).png.meta b/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D11/None/UnityChan_CelLook_Tess.png.meta
similarity index 100%
rename from com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D11/None/UnityChan_CelLook(Tessellation).png.meta
rename to com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D11/None/UnityChan_CelLook_Tess.png.meta
diff --git a/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D12/MockHMDLoader/UnityChan_CelLook(Tessellation).png b/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D12/MockHMDLoader/UnityChan_CelLook_Tess.png
similarity index 100%
rename from com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D12/MockHMDLoader/UnityChan_CelLook(Tessellation).png
rename to com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D12/MockHMDLoader/UnityChan_CelLook_Tess.png
diff --git a/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D12/MockHMDLoader/UnityChan_CelLook(Tessellation).png.meta b/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D12/MockHMDLoader/UnityChan_CelLook_Tess.png.meta
similarity index 100%
rename from com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D12/MockHMDLoader/UnityChan_CelLook(Tessellation).png.meta
rename to com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D12/MockHMDLoader/UnityChan_CelLook_Tess.png.meta
diff --git a/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D12/None/UnityChan_CelLook(Tessellation).png b/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D12/None/UnityChan_CelLook_Tess.png
similarity index 100%
rename from com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D12/None/UnityChan_CelLook(Tessellation).png
rename to com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D12/None/UnityChan_CelLook_Tess.png
diff --git a/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D12/None/UnityChan_CelLook(Tessellation).png.meta b/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D12/None/UnityChan_CelLook_Tess.png.meta
similarity index 100%
rename from com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D12/None/UnityChan_CelLook(Tessellation).png.meta
rename to com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Direct3D12/None/UnityChan_CelLook_Tess.png.meta
diff --git a/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Vulkan/MockHMDLoader/UnityChan_CelLook(Tessellation).png b/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Vulkan/MockHMDLoader/UnityChan_CelLook_Tess.png
similarity index 100%
rename from com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Vulkan/MockHMDLoader/UnityChan_CelLook(Tessellation).png
rename to com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Vulkan/MockHMDLoader/UnityChan_CelLook_Tess.png
diff --git a/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Vulkan/MockHMDLoader/UnityChan_CelLook(Tessellation).png.meta b/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Vulkan/MockHMDLoader/UnityChan_CelLook_Tess.png.meta
similarity index 100%
rename from com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Vulkan/MockHMDLoader/UnityChan_CelLook(Tessellation).png.meta
rename to com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Vulkan/MockHMDLoader/UnityChan_CelLook_Tess.png.meta
diff --git a/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Vulkan/None/UnityChan_CelLook(Tessellation).png b/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Vulkan/None/UnityChan_CelLook_Tess.png
similarity index 100%
rename from com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Vulkan/None/UnityChan_CelLook(Tessellation).png
rename to com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Vulkan/None/UnityChan_CelLook_Tess.png
diff --git a/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Vulkan/None/UnityChan_CelLook(Tessellation).png.meta b/com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Vulkan/None/UnityChan_CelLook_Tess.png.meta
similarity index 100%
rename from com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Vulkan/None/UnityChan_CelLook(Tessellation).png.meta
rename to com.unity.toon-reference-images/HDRP/Linear/WindowsEditor/Vulkan/None/UnityChan_CelLook_Tess.png.meta
diff --git a/com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook(Tessellation).meta b/com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook_Tess.meta
similarity index 100%
rename from com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook(Tessellation).meta
rename to com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook_Tess.meta
diff --git a/com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook(Tessellation)/UnityChan_CelLook(Tessellation).unity b/com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook_Tess/UnityChan_CelLook_Tess.unity
similarity index 100%
rename from com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook(Tessellation)/UnityChan_CelLook(Tessellation).unity
rename to com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook_Tess/UnityChan_CelLook_Tess.unity
diff --git a/com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook(Tessellation)/UnityChan_CelLook(Tessellation).unity.meta b/com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook_Tess/UnityChan_CelLook_Tess.unity.meta
similarity index 100%
rename from com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook(Tessellation)/UnityChan_CelLook(Tessellation).unity.meta
rename to com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook_Tess/UnityChan_CelLook_Tess.unity.meta
diff --git a/com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook(Tessellation)/UnityChan_CelLook(Tessellation)Settings.lighting b/com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook_Tess/UnityChan_CelLook_TessSettings.lighting
similarity index 97%
rename from com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook(Tessellation)/UnityChan_CelLook(Tessellation)Settings.lighting
rename to com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook_Tess/UnityChan_CelLook_TessSettings.lighting
index 5e9713ff9..557df84c5 100644
--- a/com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook(Tessellation)/UnityChan_CelLook(Tessellation)Settings.lighting
+++ b/com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook_Tess/UnityChan_CelLook_TessSettings.lighting
@@ -6,7 +6,7 @@ LightingSettings:
   m_CorrespondingSourceObject: {fileID: 0}
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
-  m_Name: ToonShader_CelLook(Tessellation)Settings
+  m_Name: UnityChan_CelLook_TessSettings
   serializedVersion: 9
   m_EnableBakedLightmaps: 0
   m_EnableRealtimeLightmaps: 1
diff --git a/com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook(Tessellation)/UnityChan_CelLook(Tessellation)Settings.lighting.meta b/com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook_Tess/UnityChan_CelLook_TessSettings.lighting.meta
similarity index 100%
rename from com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook(Tessellation)/UnityChan_CelLook(Tessellation)Settings.lighting.meta
rename to com.unity.toonshader/Samples~/HDRP/Scenes/UnityChan_CelLook_Tess/UnityChan_CelLook_TessSettings.lighting.meta