Karasuma has just found out some shocking news in an email. Korosensei is a dad! A story based off a little fan theory some of my friends have, in which Korosensei is the father of a person we all know pretty well. oh, and probably some minor Karma x Nagisa. Also posted on Fanfiction.net

Nagisa Shiota is an assassin. With high skills and bloodlust, He managed to become the world's strongest, deadliest, and the best assassin than anyone out here. He eventually got caught and became a human expirament like korosensei. The expirament unkowinglly boost his abilities to the furthest. Then an accident happened which caused him to travel through time, the time before his teacher was killed. But a time where he no longer exist as a student of class E. But exist as a teacher and assassin. Will E class find out who he really is again? how is existance forever changed history? read to find out.