Yokomizo Seishi Mystery & Horror Grand Award
よこみぞせいしみすてりあんどほらーたいしょう
KADOKAWA-sponsored open submission newcomer literary award. Targets mystery and horror, and was established in honor of Seishi Yokomizo.
- Established
- 1981
- Organizer
- KADOKAWA
- Category
- Genre Fiction
- Selection Method
- Open call
- Target
- Newcomer
- Frequency
- 1 per year
- Application Deadline
- around September
- Announcement Period
- around April
- Status
- Active
Description
The Yokomizo Seishi Mystery & Horror Grand Award is an open-submission newcomer literary award organized by KADOKAWA. It combines the Yokomizo Seishi Mystery Grand Award, established in 1981, and the Japan Horror Novel Grand Prize, and accepts broad mystery or horror novels. For the 47th edition, the grand prize consists of the Kosuke Kindaichi statue and 3 million yen, the Excellence Award carries 300,000 yen, and the Readers' Award has no cash prize. Postal and web submissions close on September 30, 2026, with results scheduled around April 2027.
Prize
- Main Prize
- Kosuke Kindaichi statue and 5 million yen prize
- Cash Prize
- 5,000,000 JPY
- Excellent Award: 300,000 yen
- Encouragement Award: 200,000 yen
- TV Tokyo Award: 1 million yen (22nd-30th editions)
- Kakuyomu Award: iPad Pro 12.9 inch Wi-Fi 256GB + Apple Magic Keyboard
Related Awards
- Japan Horror Novel Grand Prize
- Shosetsu Yasei Jidai Newcomer Award
Official Resources
https://kadobun.jp/awards/yokomizo/Past Winners
A fine arts student named Wataru Doiguchi applies for a lacquer-tapping part-time job at a remote village. Recruited by a local woman named Yoshie, he travels to the settlement, only to find upon arrival that Yoshie has already died. The village headman asks Wataru to perform a peculiar ritual called "Hatsugami-oroshi" — an ancient rite in which the hair of a deceased woman is let down to guide her soul to the afterlife. Over the few days before the ceremony, dark secrets about the village and Yoshie surface, and Wataru realises he must find a way to survive the trap set by vengeful spirits.
A terrifying ritual to let down the hair of the dead and guide her soul — a story of dread and survival for one young man drawn into an ancient village ceremony.
A collection of four linked short stories set in a port town on the Wakasa coast, exploring the terrifying mystery of a mermaid legend and the depths of human desire. When a high school girl confesses she might be a mermaid, a chain of supernatural beauty and curse unfolds across four tales. The debut work of Watahara Seri, winner of the 45th Yokomizo Seishi Mystery & Horror Award.
The being before me is a true demon. What is terrifying is that even knowing this, I find myself drawn to it irresistibly.
Psychiatrist Kamimori Chisato faces the successive suspicious deaths of patients who complained of seeing a "dream that leads to death." The nightmare begins to "infect" her as well, as she starts dreaming of attending a mysterious ritual. Meanwhile, occult writer Ito Sota, chasing the urban legend of the "cursed dream," discovers the existence of a strange ceremonial rite on a remote island from a deceased colleague's note reading "the key is Yumemōde." When the two investigation threads converge on the island's cursed folk customs, the "order of death" closes in. Winner of the Readers' Award at the 45th Yokomizo Seishi Mystery & Horror Grand Award. Published under the title Yumemōde, revised and retitled from the original submission title "Yume ni Sumitsuku Mono."
See that nightmare, and you die -- find the key to breaking the curse before your turn comes.
A linked short story collection set against the backdrop of mermaid legends in a fishing town in Wakasa. The work depicts the grotesque entanglement between mermaids and humans surrounding "overwhelming beauty." It follows the tragedy of a girl who gains supernatural beauty by drinking mermaid blood, and the humans undone by her existence, weaving together themes of lookism and obsession with beauty. Judge Yukito Ayatsuji praised it as showing "a fine sense of mystery—and it is frightening," while Honobu Yonezawa declared "this novel has depth and sorrow."
"What stands before me is a true demon. What terrifies me is that, even knowing this, I feel an irresistible fascination."
A mystery in which a detective who chased a fatal accident is drawn into a reinvestigation between guilt and the truth.
It begins with the regret of having chased something he perhaps should not have.
A supernatural detective story set in a family estate trapped by dark customs, centering on hair and death.
A custom of stuffing hair into the mouth of the dead leads to bizarre incidents.
Winner of the 44th Yokomizo Seishi Mystery & Horror Prize (Kakuyomu Award). Public information centers on its web serialization, and no standalone book edition has been confirmed.
A story about thunder and custom that remained in the selection process.
In a town covered by an unidentified gray cloud, a school horror story unfolds as Aoi and Shiko’s friendship becomes entangled with unsettling events shaking both the school and the town.
I hate you, I love you. So please, fall into hell for me.
When aspiring manga artist Akito is attacked by a怪異 and searches for his missing brother, detectives Mei and Liz pursue an inhuman shadow in this horror-mystery.
When the inhuman and the brother’s disappearance connect, a shocking turn awaits.
A shamanic storyteller in search of a “ghost story that can kill” follows rumors of a fish that brings death. A mystery that folds together ghost stories and a quiet sense of loss.
In searching for a story that kills, she reaches an impossible fish.
An overbearing killer who repeatedly restarts his life by eliminating anyone out of step with his standards intersects with a programmer searching for a missing family. A chilling psych-horror story about resets and violence.
Only five times are allowed. After that, everything is erased and started again.
A dead man's diary leads to the lingering will of a war casualty and the strange phenomena that begin to surround a family. A horror-mystery that works as both a supernatural tale and a puzzle.
A diary left by the dead starts to invade the present.
A young man who keeps erasing anyone who does not fit his ideal world crosses paths with a programmer searching for a missing family. A psych-horror story about violence in the digital age.
You may be forgiven five times. After that, everything is reset.
Originally submitted as “Chi no Haitatsuyasan” (“The Blood Delivery Man”), the novel follows a young man who goes to a fishing town in search of his missing mother and is swallowed by bizarre rites and family secrets. It is a dark horror story with a relentless pull.
In a town that smells of blood and rust, he searches for his family.
In a village that preserves a legend of rebirth, a pregnancy brings local customs and faith to the surface. A horror novel about the fear of a closed community.
Even its title, read as “O-kaeri,” signals unease from the start.
When footage of a child murder case from twenty years ago leaks into the shadows, the urge to investigate collides with the urge to punish. A social mystery that probes modern ethics and violence.
You want to see it, you want to judge it, but who is right?
A caseworker who handles welfare cases is dragged into a chain of fraud and poverty that pushes him out of ordinary life. A noir novel set at the bottom of society.
By the end of summer, even goodwill and righteousness start to crumble.
A young man is forced to face grief and obsession after a girl named Reona, who had only existed as a fictional character, is said to have been “killed.” A youth mystery where reality and fiction blur.
Why was a character killed?
A researcher joins a project to turn the dead into artificial intelligence and confronts the personality model of a woman who was once a game creator. This is a science-fiction mystery about love and loss.
Beyond the reconstruction of the dead's memories, an unreachable love remains.
At the wake of a seemingly pure and respectable teacher, the mourners' memories gradually raise the suspicion that he had an entirely different face. A reversal mystery with a sharp streak of black humor.
A saintly man dies, and an unexpected suspicion surfaces.
After speaking critically about social media on a TV interview, a man is gradually cornered by danger that creeps in through everyday life. A suspense mystery that captures the unease of the online age.
A single remark can tangle you in an invisible net.
A noir novel in which a woman working at an S&M bar is drawn into a dark website that promises payment for murder, setting off a chain of desire and violence. It is a no-holds-barred treatment of extreme material.
Will she descend into hell, or be consumed by desire?
A series of grotesque corpses missing body parts leads a special investigation team to a man who claims to have come back from the dead. The novel combines lurid horror with tightly built reasoning.
A man who returned from the dead says he will help catch the culprit.
A debut mystery in which a girl who falls from a rooftop suddenly disappears, drawing the boys' basketball club into the secrets of a watched school. It blends the atmosphere of a youth novel with a disappearance trick that unfolds out of sight.
Where did the girl go in a monitored space?
A fast-moving mystery set in post-quake Odaiba, Tokyo, revolving around a boy's origin and the disappearance of children.
In a shattered Tokyo, the mystery of a boy's birth starts to run.
A horse-racing mystery in which female jockey Natsumi investigates the truth behind a fall at Hanshin Racecourse.
A female jockey pursues the truth behind an incident that shakes the racing world.
A kidnapping mystery that begins with a man about to jump into Lake Hamana and a genius boy, then spirals into a massive ransom scheme.
A 10-billion-yen ransom changes the escape into something else entirely.
A social mystery in which a father fighting for his son's innocence crosses paths with a mysterious man claiming to be the real culprit.
A father's fight over a wrongful conviction is shaken by a voice claiming to be the true culprit.
An unusual coming-of-age mystery in which a man leaves a severed head behind and waits for a message, while a copycat and an earthquake accelerate events.
To fulfill her wish, I go out to leave the head behind.
A social mystery that follows clues in an old record and 8mm film back to memories from the end of the war.
An old record brings a sixty-year-old truth back to the surface.
An action mystery about a masked assault on a medical examiner's institute and the conspiracy surrounding gene medicine that engulfs Hikari Kamii.
A grand and dangerous struggle over the roots of life.
A fair-play mystery about a string of murders in a remote Iwate village, tied to the sinister history buried in local folklore.
Village lore and serial murder become inextricably linked.
A suspense novel in which a nurse surrounded by inheritance-hungry people is driven into an unexpected corner by escalating greed.
A whirlpool of inheritance greed throws the nurse's life off course.
A time-limited economic thriller set in a near future where the world economy has fully moved online and global power players collide.
Power players from around the world clash for control of the online economy.
A suspense novel about a man fleeing the memory of family and murder, only to find the truth buried in his past.
No matter how hard he tries to forget, the past keeps chasing him.
A human-leaning mystery in which former detective Ogi, three boarders, and a runaway girl are drawn into a case and a chance at renewal.
A runaway girl sends ripples through the boarders' quiet life.
A science-fiction-tinged mystery set in a near-extinct future, where three perspectives converge into a single solution.
Three future landscapes converge into one mystery.
A tightly plotted mystery in which the murder of a middle-aged man on a mountain pass pulls a witness and the case together.
One murder case pulls everything toward an unexpected end.
A poignant mystery about Hazuki, a girl diagnosed with brain death who wakes only at night and confronts the choice of organ donation.
On the boundary between life and death, the girl chooses to share her life with others.
逃げ口上 is recorded as a candidate entry for the 20th Yokomizo Seishi Mystery Award, but no standalone book edition could be confirmed.
No standalone bibliographic record could be confirmed.
A suspense novel linking a fatal fall at a game company and a shooting in a hometown town through a curse-like 'long arm'.
A warped town and a curse-like chain connect the two crimes.
A fair-play mystery set in Bamboo Village, a closed community governed by Taoist thought, where a series of murders erupts.
Taoist ideas and a string of murders cast a strange shadow over the sealed village.
A human mystery centered on twins born to a rescued Vietnamese refugee, with a plot driven by genetics and fate.
At the far edge of technological development, human fate begins to move.
A crime-action novel about three women and one man, all cornered by society, who launch a last-ditch plan in an impossible situation.
The underdogs go to war, driven only by endless desire.
鉛のゲーム is recorded as a candidate entry for the 20th Yokomizo Seishi Mystery Award, but no standalone book edition could be confirmed.
No standalone bibliographic record could be confirmed.
A school-set youth mystery in which students build competing theories around a summer body case.
The students' drive to build theories stands out even more than the case itself.
皆殺しジュリエット is recorded as a candidate entry for the 20th Yokomizo Seishi Mystery Award, but no standalone book edition could be confirmed.
No standalone bibliographic record could be confirmed.
Set in 1905 Shanghai, this historical suspense novel follows Japanese con man Osamu Izawa as he gets pulled into a scheme involving revolutionaries. A dangerous chain of deception begins when the plan turns on procuring weapons for the revolution.
Weapons for the revolution are to be procured by deception.
A suspense novel in which an unidentified terrorist group seizes a nuclear fuel transport convoy inside a tunnel. Riot police, Self-Defense Forces, and media crews converge on the scene, setting off a tense standoff and negotiation. Based on the revised version of the commendation winner of the 19th Yokomizo Seishi Mystery Award.
Winner of the Encouragement Award at the 19th Yokomizo Seishi Mystery Award (1999). The author submitted under the pen name Ogasawara Amu, who later won the Grand Prize of the 20th edition under the name Ogasawara Kei with 'DZ'. This work was never published as a standalone book.
A candidate work for the 19th Yokomizo Seishi Mystery Award. Submitted under the pen name Akihara Mutsuki. The work did not receive an award and no commercial publication has been confirmed. The author, Ogawa Katsumi, won the Grand Prize at the following 20th edition with his debut work 'Soretsu' (The Funeral Procession).
Set inside a fitness club, this mystery novel follows a criminal scheme and the web of interests behind the health industry. As an Excellent Work in the 16th Yokomizo Seishi Mystery Award, it puts a flashy premise and a sharp trick front and center.
Behind the health industry, vested interests and mystery quietly vie for control.
A golf-world mystery in which the protagonist follows the truth behind a dead friend. It was published as a runner-up work in the 16th Yokomizo Seishi Mystery Prize.
The truth behind a friend’s death is traced against the backdrop of golf courses.
A suspense work published as a runner-up in the Yokomizo Seishi Mystery Prize and later issued as “Tsuchita Washi.”
It was later published as “墜ちた鷲”.
This work was confirmed as a prize entry, but no standalone book edition could be verified.
No book edition could be confirmed via Amazon JP, NDL, or the publisher official site.
The first novel in the RIKO series, featuring the female detective RIKO. It combines hard-boiled police procedural elements with suspense.
RIKO cuts into the darkness beneath the case.
A classic mystery set around a sealed mansion and a reconstructed crime scene, as the cast closes in on an unseen cold-blooded culprit. Motives overlap and the shape of the case keeps changing.
A reconstructed crime scene in the mansion becomes the start of the next tragedy.
This work is recorded as a finalist for the 14th Yokomizo Seishi Award. No standalone book edition has been confirmed.
A finalist piece that traces the shadows of a city.
血雨 is recorded as a prize work, but no standalone book publication could be confirmed.
Details about 血雨 remain in award records.
Set in late-war Karuizawa, this long-form mystery unfolds around the murder of a Soviet spy.
A murder in Karuizawa summons the shadows of wartime.
A highly playful mystery that follows bizarre tanuki-related incidents and serial murders in a shopping district.
Behind the absurdly strange incidents, the investigation proceeds with surprising seriousness.
An introspective work that looks at the boundary between life and death through 死の摩滅、生の摩滅.
The boundary between life and death slowly wears thin.
A mystery short story that pursues a hidden truth through documents and records.
The outline of the case lies sleeping deep within the papers.
This work is recorded as a finalist for the 14th Yokomizo Seishi Award. No standalone book edition has been confirmed.
A city-centered suspense piece preserved as a finalist entry.
陽炎の死 is recorded as a prize work, but no standalone book publication could be confirmed.
Details about 陽炎の死 remain in award records.
A long mystery novel with spy elements, built around a mirror-world setting and questions of conspiracy and identity.
Conspiracy layers itself repeatedly around the mysterious figure known as “Haihime.”
A suspense novel built around キメラ暗殺計画, where unease and tension steadily build.
Unease steadily tightens its grip on the story.
A short story that unsettles first-person narration and reopens the boundary between the self and the crime.
Am I the culprit, or is the narration itself the culprit?
This work is recorded as a finalist for the Yokomizo Seishi Mystery Award. No standalone book edition has been confirmed.
A shadowy mystery preserved as a finalist entry.
A Yokomizo Seishi Mystery Grand Prize winner in which fraud around land deals and registration links to suspicious deaths and past harms.
A single case brought to an Osaka judicial scrivener exposes the city’s hidden darkness.
A human mystery about a woman who has lost her memory and is pregnant, as her past is traced from the seaside.
Who is the woman found collapsed on the shore? Her lost memory slowly begins to open.
A college student is thrown into late-19th-century London and tackles a difficult case alongside Holmes and his circle. The work blends time-slip fiction with the pleasures of pastiche.
In a London beyond time, Mizuki faces a case with famous detectives.
A group of young people die at the same time after watching a single videotape. The novel follows the spread of the curse and the search for its truth, and helped reshape Japanese horror fiction.
The image that should never have been seen has already been seen.
A prize-winning work by Teiko Yamazato that is also cited in the context of Okinawan literature. Through shifts in bodily awareness and self-determination, it invites reflection on the relationship between the individual and society.
A quietly intense award-winning work that has been read in the context of Okinawan literature.
A maritime mystery in which a captain is murdered aboard a coast guard patrol ship, and the closed sea-bound setting narrows the suspects to the crew.
A locked-room crime at sea quietly deepens into tragedy.
A courtroom mystery in which attorney Asahi Gakunosuke challenges a false confession in a robbery-murder case in Osaka.
A lawyer sees the possibility of a false conviction in a robbery-murder confession.
This work was confirmed as a prize entry, but no standalone book edition could be verified.
No book edition could be confirmed via Amazon JP, NDL, or the publisher official site.
A short story about a boy that lingers through its scenes of picking up barracuda and its evocation of the sea. The judges praised it as the strongest in descriptive power among the seven finalists, and felt that it held something essential as a novel even within a comparatively familiar subject.
Scenes of picking up barracuda and describing the sea give the boy’s story its depth.
A classic mystery in which a tragedy at a Tokyo launch party expands into a chain of strange events across London, Bruges, and Paris. It is Hattori Mayumi's debut novel and the winner of the 7th Yokomizo Seishi Mystery Grand Award.
The moment a deep red rose arrives, the story turns into a labyrinth spanning Europe and Tokyo.
A mystery in which an international journalist follows the identity and secrets of a Polish-Jewish woman who died leaving an inheritance forty years after the war. It was published as a prize-winning entry in the 7th Yokomizo Seishi Mystery Grand Award.
The more the trail of the inheritance is followed, the more mysterious the people involved become.
Recorded as a candidate work for the Yokomizo Seishi Mystery Grand Award, but no standalone book edition could be confirmed through Amazon Japan, the NDL, or the publisher's official site.
No book edition could be confirmed.
Recorded as a candidate for the 7th Yokomizo Seishi Mystery Grand Award, but no standalone book edition could be found after checking Amazon Japan, the NDL, and the publisher's official sources in that order.
No book edition could be confirmed.
This Akutagawa Prize-winning story follows a woman living in Southern California as a thirteen-year return to New York forces her to face the distance from her husband's family and the pressure created by a ritual rooted in blood ties. Everyday life between cultures and the tension within the family build quietly throughout the narrative.
As she faces the family ritual, the protagonist's sense of place begins to shift.
A co-written mystery by Ryusei Ishii and Manami Ihara centered on a cipher hidden in postage-stamp designs.
As the cipher in the designs is decoded, the shape of the case comes into view.
This work was confirmed as a prize entry, but no standalone book edition could be verified.
No book edition could be confirmed via Amazon JP, NDL, or the publisher official site.
An early novel and Yokomizo Seishi Mystery Prize runner-up centered on Hokusai mysteries and an unpublished manuscript.
A new Hokusai-related manuscript and a case intersect.
This work was confirmed as a prize entry, but no standalone book edition could be verified.
No book edition could be confirmed via Amazon JP, NDL, or the publisher official site.
"魔性の血" is an early work published in connection with the 横溝正史ミステリ大賞. No standalone book edition or ISBN could be confirmed.
An early work published in connection with the 横溝正史ミステリ大賞.
"不知火の謎は解かないで" is an early work published in connection with the 横溝正史ミステリ大賞. No standalone book edition or ISBN could be confirmed.
An early work published in connection with the 横溝正史ミステリ大賞.
An award-winning work from the Yokomizo Seishi Mystery Grand Prize that centers on wartime crime and flight, depicting a prison-break drama driven by intense passions.
It tells a prison-break drama driven by wartime crime, flight, and passion.
"篝り火の蔭に……" is an early work published in connection with the 横溝正史ミステリ大賞. No standalone book edition or ISBN could be confirmed.
An early work published in connection with the 横溝正史ミステリ大賞.
"宙の狂詩曲" is an early work published in connection with the 横溝正史ミステリ大賞. No standalone book edition or ISBN could be confirmed.
An early work published in connection with the 横溝正史ミステリ大賞.
"泥の翼" is an early work published in connection with the 横溝正史ミステリ大賞. No standalone book edition or ISBN could be confirmed.
An early work published in connection with the 横溝正史ミステリ大賞.
"フェミニスト殺人事件" is an early work published in connection with the 横溝正史ミステリ大賞. No standalone book edition or ISBN could be confirmed.
An early work published in connection with the 横溝正史ミステリ大賞.
Published as an award-winning early work by 阿久悠.
An early award-winning work by 阿久悠.
An early award-winning piece by 芳岡道太, with no confirmed standalone book edition.
An early award-winning piece by 芳岡道太.
An early award-winning piece by 速水拓三, with no confirmed standalone book edition.
An early award-winning piece by 速水拓三.
An early award-winning piece by 有村康, with no confirmed standalone book edition.
An early award-winning piece by 有村康.
Centered on a female fortune-teller rumored to influence politics from the shadows and the reporters investigating the case, the story unfolds into a disturbing mystery tied to an old song. It is a mystery that blends eerie atmosphere with social tension in the style of the Yokomizo Seishi Award.
A mystery tied to the seventh-birthday celebration song deepens the darkness around the case.
Published as a candidate for the Yokomizo Seishi Award, this short piece quietly traces the sealed atmosphere and the scent of the past suggested by the title ‘Farewell to the Grape House.’ The memories of the house and the relationships among its people gradually gather shade.
It says a quiet farewell to the memory of the grape house.
Published as a candidate for the Yokomizo Seishi Award, this short piece follows the way a chain of beliefs and memories can bind human action, as suggested by the title ‘Genealogy of Thoughts.’ It leaves behind a quiet sense of pressure.
Each time the thoughts connect, the shadow of the past deepens.
Published as a candidate for the Yokomizo Seishi Award, this short piece quietly depicts the heat and intensity of an ending suggested by the title ‘Burning Red in the Evening Glow.’ The deep colors before sunset remain as a lingering afterimage.
The red of dusk reflects the heat of an ending exactly as it is.