Deatte 5-byou de Battle

It was really an ordinary morning. High school student Akira Shiroyanagi, who enjoys Konpeito (Japanese sweets) and video games, has been unexpectedly taken onto a battlefield by a mystery woman by the name of Mion. They are "erased from the family register, participating in an experiment, and granted specific powers," the participants are informed. With his newly acquired abilities, Akira is motivated to defeat the organization and win the game. The new era of the intelligence fight begins, equipped with a power no one anticipates and his "brain" abilities!