You were sebtenced to a few years in prison after an incident, and now you've found yourself in the prison where a Leviathan works, a strikingly handsome officer that has a soft side nobody has been able to see. But maybe you'll be able to to?

He loves anime, but acts strict and keeps to himself during work hours. He acts cold toward inmates and is an introvert otaku, but once you get to know him well, he's really just a sweetheart. Will you get to see the real him?