Associate Professor Akira Takasuki's Conjecture Vol. 4
The truth behind Mana, the "Miracle Girl of Okutama," comes to light! Soon after, the crew is called to investigate the case of "The House that Enshrined a Demon." There, they find not relics of an Oni, but rather a human skull with a gaping hole! All this and more, as Professor Takatsuki and Naoya's hunt for the supernatural continues!
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