Houjutsu is the power to control logic itself. At first glance, it may seem that one's techniques defy rational explanation, but in truth, it is the power of Houjutsu. As Himiko Kudo explained, not even Magic can escape the bonds of Logic. To users like Kuroudo Akabane and Ban Mido, they see it as a simple equation, which allows them to create a higher logic that defies the already powerful logic of reality. Der Kaiser is the strongest user of Houjutsu in the GetBackers series.