Occultic;Nine Novel Vol. 2 (novel)

After Gamon finds Professor Hashigami’s corpse with a mysterious key in its mouth, things take a turn for the dark and twisted. Zonko taunts him with a bloody vision, claiming that Gamon himself is the killer. But Hashigami’s death isn’t the only murderous plot afoot. The Kirikiri Basara group is about to face a huge massacre of decidedly occult origins–putting the case right up their creepy alley.