Deatte 5-byou de Battle

A high school student who enjoys competitive games and candy meets a mysterious woman named Mion before being taken by an unknown organization. Along with others, he is forced to participate in a test pilot program, where they are given special abilities and made to fight one another. Using his new power, he resolves to defeat the organization and succeed in its challenges. He must use cleverness to navigate various difficulties in a contest that tests his intelligence.