Three consecutive murders occurred at an isolated island hotel, "Hoozukikan." The case appeared solved through the deductions of master detective Dojima Itami, but the true culprit, Sato Sama, knows the reasoning is wrong. While the innocent Amaya Nagi awaits trial, Sama grows curious about her past and begins an independent investigation. Meanwhile, Itami discovers evidence of a hidden passage and reopens the case. An ambitious work weaving classic detective fiction tropes into a legal mystery framework, told from two intersecting perspectives.

A challenge to the taboos of detective fiction! What happens when a storybook detective is dropped into a courtroom drama that demands realism?

A series of murders targeting former boxers in a Tokyo park sets two detectives on a trail leading to three suspects from the elite Kongo Boxing Gym: Chinen, a genius fighter combining sanctity and bestiality; Kiritani Kengo, a forgotten former champion; and Kanaki Amelia, known as the crusher of the underworld. All three are preparing for a world title match one month away. A crime suspense novel centered on professional boxing, blending entertainment with socially-conscious mystery.

For what reason do you swing your fist? At that moment, is your fist trembling?

Announced as the 69th Mephisto Prize winner. It is reportedly in preparation for publication, but no standalone book edition has been confirmed yet.

An award-winning work drawing attention before publication.

Announced as the 68th Mephisto Prize winner. Public book-release information is still limited.

At present, only award-announcement information is publicly available.

A historical entertainment novel in which shogun Yoshimune Tokugawa attempts to rebuild a shogunate on the brink of bankruptcy.

A shogunate management story told through a modern business lens.

Announced as the 68th Mephisto Prize winner. Public information is limited, and no standalone book edition has been confirmed yet.

Presented as a story about the whereabouts of a royal treasure.

A coming-of-age mystery in which the voice of the dead Yamada speaks through the classroom speaker and disrupts the daily life of Class 2-E.

Even death cannot end Yamada’s youth.

Mephisto Prize-winning debut. A tale of interlinked mysteries and psychological confrontations revolving around a malicious "experiment."

Mephisto Prize-winning debut.

A legal mystery set in a law school that follows students' mock trials. Campus incidents and interpersonal tensions reveal questions of law and ethics.

A legal mystery set in a law school that follows students' mock trials.

Debut novel published while still a university student. A coming-of-age mystery that involves idols and music, with friendship and secrets at its core.

Debut novel published while still a university student.

Mephisto Prize-winning debut novel. Revised and retitled from the unpublished work 'Successor of the Hanging Company', it is a mystery that revolves around crime, interpersonal ties, and hidden secrets.

Mephisto Prize-winning debut novel.

A coming-of-age novel about university student Sosuke Aoyama, who, after losing his family, is taken on as a disciple by the sumi-e master Kozan Shinoda. Through learning ink painting he confronts grief, heals, and grows while forming new human connections.

A coming-of-age novel about university student Sosuke Aoyama, who, after losing his family, is taken on as a disciple by the sumi-e master Kozan Shinoda.

Set in a library that becomes a gateway to another world, the novel explores memory and identity. As the boundary between reality and the book-world blurs, the characters' pasts and acts of rebirth intertwine.

Set in a library that becomes a gateway to another world, the novel explores memory and identity.

An introspective story about a protagonist who cannot fit into society and struggles with their own existence.

An introspective story about a protagonist who cannot fit into society and struggles with their own existence.

A collection of short stories that captures tiny moments of urban life, set largely around convenience stores. It explores habitual consumer behavior and intersecting lives of solitary characters.

A collection of short stories that captures tiny moments of urban life, set largely around convenience stores.

Sara, daughter of Enma (the judge of the afterlife), offers the dead a "deduction game": if they correctly identify their murderer they are revived; if not, they are condemned to hell. The book is an episodic collection of mysteries and served as the author's debut (winner of the 55th Mephisto Prize).

Sara, daughter of Enma (the judge of the afterlife), offers the dead a "deduction game": if they correctly identify their murderer they are revived; if not, they are condemned to hell.

The story follows a woman who temporarily loses her memory on a certain day each year and the narrator who tries to help her. As they piece together fragments of the past, the novel delicately explores memory, love, and renewal.

The story follows a woman who temporarily loses her memory on a certain day each year and the narrator who tries to help her.

A full-length mystery set in a contemporary city following strange serial incidents surrounding disappearing shadows.

A full-length mystery set in a contemporary city following strange serial incidents surrounding disappearing shadows.

Chikako Enomoto, a housewife working part-time at a supermarket, cannot stop writing a 'happy and fashionable parenting life' on her blog to win praise, despite how far it is from her real life. Yuko Utano, an apparel-store manager, struggles with sexual estrangement from her husband who is five years younger despite being newly married. Haruka Wakatsuki, a nursery teacher, turns to overeating from work-related stress and pins her hopes on marrying her boyfriend. Yuzuki Takagi appears to live in a prestigious tower apartment and to have a harmonious household. The four women are connected to others in various ways, but then an unexpected incident occurs.

Chikako Enomoto, a housewife working part-time at a supermarket, cannot stop writing a 'happy and fashionable parenting life' on her blog to win praise, despite how far it is from her real life.

One summer day, university student Eihiko Morijo visits Suzuri, who lives in an old house in northern Kanto, to consult about an incident that occurred at a girls' gathering. Through Suzuri's investigative insight and conversations with Eihiko, the truths behind murders in Osaka and at a Western-style villa in Yamanashi are uncovered in this mystery novel.

One summer day, university student Eihiko Morijo visits Suzuri, who lives in an old house in northern Kanto, to consult about an incident that occurred at a girls' gathering.

Debut novel noted for its gimmick inviting readers to guess the title; a puzzle-oriented mystery.

Debut novel noted for its gimmick inviting readers to guess the title; a puzzle-oriented mystery.

The first book in the series following spirit‑medium detective Ernest as he confronts bizarre cases. A longform mystery mixing locked‑room/manor elements with supernatural motifs.

The first book in the series following spirit‑medium detective Ernest as he confronts bizarre cases.

Debut novel, published after being revised and retitled from the Mephisto-winning manuscript. A work that explores love, loss and memory with a short-form sensibility within a longer narrative.

Debut novel, published after being revised and retitled from the Mephisto-winning manuscript.

Debut novel and winner of the 47th Mephisto Prize. The character Towada Tadahito is modeled on the itinerant mathematician Paul Erdős.

Debut novel and winner of the 47th Mephisto Prize.

A romance novel set in Nara that follows the romantic relationships and interpersonal dynamics of young people; includes local shrine and fox folklore elements.

A romance novel set in Nara that follows the romantic relationships and interpersonal dynamics of young people; includes local shrine and fox folklore elements.

A long-form fantasy-mystery set around a library. It intertwines mysteries surrounding witches and books with folkloric elements, carefully exploring characters' memories and relationships.

A long-form fantasy-mystery set around a library.

A historical mystery inspired by research into Yamatai. Written while the author had a visual impairment, it was his debut novel at age 56.

A historical mystery inspired by research into Yamatai.

Debut winning work; a classic puzzle-oriented mystery focusing on locked-room elements and clever tricks.

Debut winning work; a classic puzzle-oriented mystery focusing on locked-room elements and clever tricks.

Debut novel. A mystery long-form work that served as the author's introduction to the literary scene.

Debut novel.

Debut novel blending mystery and horror; winner of the 41st Mephisto Prize.

Debut novel blending mystery and horror; winner of the 41st Mephisto Prize.

The first volume of a series blending uncanny elements with classical detective reasoning, centered on mysteries involving twins and faces.

The first volume of a series blending uncanny elements with classical detective reasoning, centered on mysteries involving twins and faces.

マネーロード のメフィスト賞受賞作。

マネーロード のメフィスト賞受賞作。

A debut novel in which the ronin Samon investigates strange incidents and yokai-related mysteries centered on a canal; blends period setting with mystery elements.

A debut novel in which the ronin Samon investigates strange incidents and yokai-related mysteries centered on a canal; blends period setting with mystery elements.

A classic-style mystery centered on an aquarium setting, depicting an incident in a closed environment and carefully constructed tricks.

A classic-style mystery centered on an aquarium setting, depicting an incident in a closed environment and carefully constructed tricks.

Debut novel that challenges an impossible trick in which the reader is made to be the culprit. Later retitled 'The Last Trick' in paperback and became a bestseller.

Debut novel that challenges an impossible trick in which the reader is made to be the culprit.

The first novel in a series set in a parallel-world 'Japanese Empire' where a high-school protagonist becomes reluctantly involved in and solves various mysteries. Debut work and Mephisto Prize winner.

The first novel in a series set in a parallel-world 'Japanese Empire' where a high-school protagonist becomes reluctantly involved in and solves various mysteries.

Described on its band as "an evolutionary form of youth noir that probes the dark sides of children." Debut novel and winner of the 34th Mephisto Prize. Reportedly written in about two months, with Mark Z. Danielewski's House of Leaves cited as an inspirational reference.

Described on its band as "an evolutionary form of youth noir that probes the dark sides of children.

黙過の代償 のメフィスト賞受賞作。

黙過の代償 のメフィスト賞受賞作。

Debut work; winner of the 32nd Mephisto Prize. An early novel depicting closed-off psyches and distorted human relationships.

Debut work; winner of the 32nd Mephisto Prize.

A long-form novel set in a high school. It follows students confronting a past incident, blending horror elements with mystery.

A long-form novel set in a high school.

A novel that blends death-game scenarios with orthodox mystery elements; participants are forced to deduce under extreme conditions.

A novel that blends death-game scenarios with orthodox mystery elements; participants are forced to deduce under extreme conditions.

A debut novel set in the 'pulp-town' of Asahikawa, portraying coming-of-age and nostalgia through a boy's experiences.

A debut novel set in the 'pulp-town' of Asahikawa, portraying coming-of-age and nostalgia through a boy's experiences.

Debut novel; a mystery centered on an enigmatic forest and the events surrounding a mysterious goddess figure.

Debut novel; a mystery centered on an enigmatic forest and the events surrounding a mysterious goddess figure.

フレームアウト のメフィスト賞受賞作。

フレームアウト のメフィスト賞受賞作。

A long-form disaster novel set in Japan, published by Kodansha.

A long-form disaster novel set in Japan, published by Kodansha.

First in the Takemoto & Ushiozaki series. A mystery set in a police environment. Debut novel that won the 25th Mephisto Prize.

First in the Takemoto & Ushiozaki series.

Kitayama's debut novel. A locked-room mystery set in a castle that heavily employs physical tricks.

Kitayama's debut novel.

Debut novel that won the 23rd Mephisto Prize; first entry in the Zaregoto (Gag) series, centered on a narrator.

Debut novel that won the 23rd Mephisto Prize; first entry in the Zaregoto (Gag) series, centered on a narrator.

A science fiction novel that won the Mephisto Prize and marked the author's debut. Deals with themes of apocalypse and survival.

A science fiction novel that won the Mephisto Prize and marked the author's debut.

Debut novel that won the Mephisto Prize. The first entry in the Kagami family saga, noted for its young narrator, unconventional plotting, and subcultural references.

Debut novel that won the Mephisto Prize.

Debut novel and winner of the 20th Mephisto Prize. A mystery focused on a gem and featuring intricate puzzle-oriented plotting.

Debut novel and winner of the 20th Mephisto Prize.

Debut work. A collection of strange, layered mystery stories set in regional locales, noted for winning the Mephisto Prize.

Debut work.

The author's debut novel and the first in the Miria & Yuri series. Emphasizes logical puzzle-solving and character-driven mystery.

The author's debut novel and the first in the Miria & Yuri series.

Debut novel set in the Islamic world focusing on Sufi themes; a mystery novel noted for its distinctive prose and intricate world-building.

Debut novel set in the Islamic world focusing on Sufi themes; a mystery novel noted for its distinctive prose and intricate world-building.

Debut novel written while working as a freeter; won the 16th Mephisto Prize. A mystery revolving around a wedding and the complicated relationships surrounding it.

Debut novel written while working as a freeter; won the 16th Mephisto Prize.

Published in 2000. A full-length mystery novel built around logic-puzzle style tricks. Winner of the 15th Mephisto Prize.

Published in 2000.

Debut novel dealing with an incident inside the Japan Air Self-Defense Force. Winner of the Mephisto Prize.

Debut novel dealing with an incident inside the Japan Air Self-Defense Force.

Debut work that won the Mephisto Prize; published under a mask, a mystery noted for its distinctive viewpoint and concerns.

Debut work that won the Mephisto Prize; published under a mask, a mystery noted for its distinctive viewpoint and concerns.

The first entry in the 'Aka zu no Tobira' research-club series. A honkaku-style locked-room mystery involving members of a study club; debuted as the 12th Mephisto Prize-winning novel.

The first entry in the 'Aka zu no Tobira' research-club series.

Debut novel and winner of the 11th Mephisto Prize. A mystery novel centered on puzzle-solving.

Debut novel and winner of the 11th Mephisto Prize.

A novel centered on full-contact combat, with an emphasis on action-oriented sequences.

A novel centered on full-contact combat, with an emphasis on action-oriented sequences.

A linked mystery series centered on insurance investigator Yoichi Ono. It is a debut work that balances outrageous gimmicks with lightness.

Absurd setups turn into oddly coherent deductions.