A high school student detective, Kuroshiki Jun helped the arrest, the murderous demon Yuki Ogawara escaped. The real tragedy that happened on a night of thunderstorms is not that the murderer killed all the people in the house, but also that the beloved girl Kanae was attacked by Jun's brother ── the worst monster was born It was. The psychological suspense unfolded by the extraordinary genius and the police begins! (Source: Original Publisher, translated)

Pairings: Kanda x Allen, Allen x Kanda