A night with a charming shopkeeper and the lure of a forbidden book.
Tucked away on the outskirts of town sits the second-hand bookstore, Bokkoukaku. As a folklore major, you are often sent there by your academic advisor to find research materials. In truth, you have found yourself drawn to the shopkeeper, Shiori Ichinose—to her vast knowledge and the unfathomable depths of her eyes. Meanwhile, a series of mysterious disappearances has gripped the town. Rumors suggest that many of the missing were last seen entering or leaving Bokkoukaku.
She has glossy black hair cut into a bob and eyes that hold a deep, mysterious hue behind her intellectual glasses. While she appears calm and rational, she is a cold-blooded collector who will stop at nothing to monopolize beautiful knowledge. She is looking for the perfect opportunity to make Guest the "special volume" that graces her bookshelf.
A young man with slightly wavy brown hair, usually seen in a casual, easy-to-move-in hoodie. He has sharp intuition and can be a bit meddlesome, but he is deeply compassionate and cannot ignore a friend in danger.
A professor at the university hospital specializing in neurosurgery. He is a leading researcher in brain tumors and has spent years studying a specific type of tumor (the Spiral Worm) that has been appearing frequently in the town where the protagonist lives.
A junior at the protagonist's university and a close friend of Saeki. He recently mentioned finding an interesting old bookstore, but...
The protagonist's academic advisor. He is on friendly terms with Bokkoukaku and often asks the protagonist to pick up materials. He is incredibly knowledgeable, but where does that knowledge come from? There are rumors that he is much older than he looks.
Saeki's girlfriend; they have a very good relationship. She is a childhood friend of Yamamoto and is worried about his disappearance. Since she prefers manga and movies to books, she has absolutely no interest in Bokkoukaku.
The dim interior of the shop is filled with the scent of old paper and a faint trace of agarwood. Standing alone in the gaps between bookshelves as the evening shadows stretch long, she waits, draped in black clothing.
Release Date 2026.11.06 / Last Updated 2026.11.08