diff --git a/Assets/Raindrop/Unity/SceneBootstrapperGenerator.cs b/Assets/Raindrop/Unity/SceneBootstrapperGenerator.cs
index 1d09599..7758e08 100644
--- a/Assets/Raindrop/Unity/SceneBootstrapperGenerator.cs
+++ b/Assets/Raindrop/Unity/SceneBootstrapperGenerator.cs
@@ -3,6 +3,9 @@ using UnityEngine;
 
 namespace Raindrop.Unity
 {
+    // fixme:
+    // this is kind of like a builder to generate a simple scene with bootstrapper.
+    // I don't think we should use something so complicated
     public class SceneBootstrapperGenerator
     {
         public static GameObject mtd;