Q.E.D.

Paul Taylor, a middle-aged man, is devastated after losing something that meant the world to him. He decides to give up everything and to go and teach at a reform school for kids aged between 12 and 14 in the hope he would come to understand the criminal mind of a child. Here he is challenged by students who have nothing to lose. The only way out is to kill for survival or be killed or end up spending their lives behind bars. While teaching at the reform school Paul Taylor befriends two pupils. These two boys literally represent the negative and positive ends of the world and with them comes the mystery of what is real and what is not. Paul begins to realize that nothing seems normal anymore and that there is more to this world than what he imagined and, if he wants, he can make the decision to walk with the power of the universe.

Follow an adopted boy who is able to see the invisible.

Amemiya is an unpopular Youtuber who specializes in the occult. One day, his manager brings him a floor plan with an inscrutable point. With the help of Kurihara and Yuzuki, he begins to look into the plan and reveal the mystery behind.