Video information
On the surface, Kiyomaru Takamine (voiced by Takahiro Sakurai) is a reclusive and truant delinquent, but he is actually a genius with an extraordinary intellect. One day, an unusual-looking boy approaches Kiyomaru and introduces himself as Kashuu (voiced by Ikue Ōtani). Kashuu has come to repay a debt of gratitude. Thus, Kiyomaru takes him in, and their cohabitation begins. Hidden within the red book that Kashuu carries is a clue to his amnesia, and surprisingly, Kiyomaru can easily read the strange text, setting off a magical adventure. It turns out that in this world, there are many children like Kashuu who possess magical books, and between them, a vast war rages, with the goal of destroying each other's magical books. Kashuu and Kiyomaru are drawn into this brutal conflict.