Sorry,Hell's Developer 240 is not avaiable yet. We will update Hell's Developer as soon as it is released.
If you want to read new chapter of Hell's Developer at the first time,you can subscribe it. We’ll send your the email as soon as Hell's Developer 240 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