Sorry,Blue Project 73 is not avaiable yet. We will update Blue Project as soon as it is released.
If you want to read new chapter of Blue Project at the first time,you can subscribe it. We’ll send your the email as soon as Blue Project 73 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