Sorry,Black Cat Tunnel 4 is not avaiable yet. We will update Black Cat Tunnel as soon as it is released.
If you want to read new chapter of Black Cat Tunnel at the first time,you can subscribe it. We’ll send your the email as soon as Black Cat Tunnel 4 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