diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/subject/PadSubject.java b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/subject/PadSubject.java
index ece74d6..17d2852 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/subject/PadSubject.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/subject/PadSubject.java
@@ -3,6 +3,8 @@
 import org.ntlab.radishforandroidstudio.framework.event.PadEvent;
 import org.ntlab.radishforandroidstudio.framework.listener.PadListener;
 
+// 実装いらない説
+// C++のテンプレート特殊化的なことだけして中身なしにするかも
 public class PadSubject extends MySubject<PadListener, PadEvent> {
     public final static PadSubject own = new PadSubject();