D-Frag!

Kenji Kazama wants his gang to be feared at school, but his reputation proves useless against the eccentric members of the Game Creation Club. After helping extinguish a small fire in their room, he finds himself trapped into joining them rather than thanked for his trouble.

Roka and her companions treat bizarre contests, invented powers, and school politics with an intensity that makes ordinary delinquency seem tame. Worse, another group claims to be the real Game Creation Club. Caught between rivalries and increasingly unreasonable challenges, Kenji becomes the unwilling voice of common sense in a club that rarely has much to do with making games.