My Hero Academia: Dawn of Nemesis Book 1: Awakening of Discord

It is during the second half of the First year that announced an event where the hero course students are pitted against each other between heroes and villains, with Katsuki Bakugo as the leader of the Heroes and Izuku Midoriya as leader of the Villains.

Naturally, no one wanted to join the villain team, save for one which left Izuku and his partner as the only two villains and everybody immediately began to underestimate them which triggers some unpleasant memories to resurface which ignited Izuku's resolve to prove all of them wrong.

And let's just say, Discord has come to U.A High School as secrets are revealed.