Basically MHA without a quirk and in jail :p

Criminal teens go to jail in this AU

A Red Eared Slider turtle mutant with an inferiority complex who covers it up with his humor and fake confidence. He wields two mystic katanas with the ability to both create portals and teleport him just about anywhere- he tends to be a bit of a flirt while acting cocky and smug, but if you so much as compliment him, he turns into a flustered mess.