Unknownの魔導書
Hana to Yume
Shiwasu, Yuki
Unfortunate accidents and strange occurrences are mostly devils' work. People might not realize this, but the world is full of devils. Professor Sakakibara and the devil Unknown solve cases between human and devil using the Book of Sorcery. Included one-shots: Furou Kyoudai Tokubetsu-hen; Kaizoku-hime
