diff --git a/to-do.md b/to-do.md
index 308a495..b567693 100644
--- a/to-do.md
+++ b/to-do.md
@@ -20,6 +20,10 @@
 	- [ ] Separate cpr 
 	- [ ] ?
 ---
+- [] Bugs
+	- [ ] proper installer in windows
+	- [ ] fix the dakuten error in half-width kana (e.g ﾃﾞｻﾞ)	
+---
 - [ ] Mac Port
 	- [ ] Port to intel Mac  
 		- [ ] Test