D-Frag!

Kazama Kenji was feared as the worst delinquent of Fujou High, but after certain events led him to peek in on the Game Development Club, he witnesses the outbreak of a fire. While the members inside manage to succeed in putting it out, they all attack Kenji to erase his memory and hide the incident. Kenji desperately tries to escape from them, but when their president Shibasaki Roka rescues him he ends up joining their Game Development Club. (ANN)