My stupid romance

This is about a girl named Akuma and a guy named Rin. Akuma has a past that haunts her but thinks no one else knows about. Rin knows everything about Akuma and is trying to get her to trust him. Also, in this story kami has given up on earth and humans so angels and kami no longer exist. The world is now run by demons. Hades has decided that demons will protect certain humans of which they choose.