Sorry,Kurasu ni ijime wa arimasen 21 is not avaiable yet. We will update Kurasu ni ijime wa arimasen as soon as it is released.
If you want to read new chapter of Kurasu ni ijime wa arimasen at the first time,you can subscribe it. We’ll send your the email as soon as Kurasu ni ijime wa arimasen 21 updates.

Have more fun on facebook:

https://www.facebook.com/mangahomelife/

Or enjoy fantasy shoujo moments on tumblr:

https://onlyshoujo.tumblr.com/

You can read some other great manga to kill time