Kyoyota Arianagi, an intelligent and hard working student, with a handful of friends, had a rough home life. When Kyo moves in with his aunt to go to high school he finds a different view on life after being dragged into joining the student council by the captivating student council president Yuuki.

A God summons four souls to his world with the instructions, "kill the demon king." After fifteen years these four people with the same fated destiny, finally meet, but things don't go as planned as they choose to side with the demons instead.