Deatte 5-byou de Battle

It was just a regular morning for Akira Shiroyanagi, a high schooler who loves playing games and eating Konpeito (Japanese sweets). Suddenly, he was dragged into a mysterious battlefield by a girl named Mion. Akira and the other participants were told that they have been erased from the family register, and were involved in an experiment to gain certain powers.

Akira was determined to use his newfound powers to win the game and destroy the organization. With his intelligence and powers no one expected, a new era of intelligence battle had begun!