In a world where everyone has powers, People who do not have abillities are called Zeros, they are outcasts in society. But they can take tests to check if they are ability users. Blaco Katsujun is a 15 year old male Zero, who has failed at the ability test 98 times, his 99th try is also a fail. He has gone through a terrible childhood and just wants to be a powerful person in the world of abilities. But all is not how it seems.