
A perfect crime not fit for a girl
Description
Book Introduction
The latest work from the 'newcomer of authentic mystery' Hojo Ki!
Simultaneously nominated for Japan's top 4 mystery rankings!
A cruel girl and a formless ghost
An extraordinary collaboration mystery
In 2019, Hojo Kiega, who made a splendid debut by winning the Ayukawa Tetsuya Award, the representative full-fledged mystery novel, has returned to domestic bookstores with his new work, "A Perfect Crime Not Suitable for a Girl," which was simultaneously nominated for Japan's top four mystery rankings.
The story begins at the same time, in a different place, with a strange misfortune.
This is a mystery revenge drama about a girl named 'Otoha' who is obsessed with revenge after losing her parents horribly and meets 'Kuroha', a perfect criminal agent who fell from a building and became a ghost, and searches for the culprit.
This incongruous yet strangely harmonious relationship of opposites becomes the key to solving the work's inexplicable murder method.
"A Perfect Crime Not Suitable for a Girl" is a special mystery that combines a locked room murder and multiple detective stories, and is being praised as a "masterpiece of foreshadowing."
The puzzles that appear as if they are pressing are also one of the charms of this work.
The final chapter even presents a new charm in that the mystery world of a book is neatly organized in a way that even the title is completely recovered.
Simultaneously nominated for Japan's top 4 mystery rankings!
A cruel girl and a formless ghost
An extraordinary collaboration mystery
In 2019, Hojo Kiega, who made a splendid debut by winning the Ayukawa Tetsuya Award, the representative full-fledged mystery novel, has returned to domestic bookstores with his new work, "A Perfect Crime Not Suitable for a Girl," which was simultaneously nominated for Japan's top four mystery rankings.
The story begins at the same time, in a different place, with a strange misfortune.
This is a mystery revenge drama about a girl named 'Otoha' who is obsessed with revenge after losing her parents horribly and meets 'Kuroha', a perfect criminal agent who fell from a building and became a ghost, and searches for the culprit.
This incongruous yet strangely harmonious relationship of opposites becomes the key to solving the work's inexplicable murder method.
"A Perfect Crime Not Suitable for a Girl" is a special mystery that combines a locked room murder and multiple detective stories, and is being praised as a "masterpiece of foreshadowing."
The puzzles that appear as if they are pressing are also one of the charms of this work.
The final chapter even presents a new charm in that the mystery world of a book is neatly organized in a way that even the title is completely recovered.
- You can preview some of the book's contents.
Preview
index
prolog
Chapter 1
Interlude 1
Chapter 2
Interlude 2
Chapter 3
Interlude 3
Chapter 4
Interlude 4
Epilogue
Chapter 1
Interlude 1
Chapter 2
Interlude 2
Chapter 3
Interlude 3
Chapter 4
Interlude 4
Epilogue
Detailed image

Into the book
(……)
There are two key elements to achieving the perfect crime.
The first is the ability to logically predict everything, and the second is the prudence to be fully prepared to respond even if the unpredictable occurs.
-Always think logically, don't be reckless, and always be cautious.
I only participate in matches where I have a good chance of winning.
--- p.11 From the "Prologue"
(……)
This child clearly sees me.
I was so captivated by the girl's devilish gaze that I couldn't lift a finger.
The girl opened her mouth.
“I finally met the perfect criminal contractor.”
“How… that name?”
Instead of answering, the girl lightly kicked the floor.
The girl threw the baby's breath and at the same time struck my chest with her axe.
--- p.26 From Chapter 1
(……)
March 14, 5:30 PM
On White Day, eat some taffy.
After I locked myself out of Cafe Lupin, I descended the grimy stairs that hadn't been waxed in years.
It's usually open until 8pm, but it closed early today.
There was a regular customer who would come in every evening, order a cup of apple tea, and sit down in the shop to chat with me, but I barely managed to kick him out of the shop.
-I'm planning to meet someone tonight.
Before that, we need to prepare in many ways.
--- p.47 From “Interlude 1”
(……)
The silence was suddenly broken by the ringing of a phone.
Ottoha picked up the receiver in a hurry.
“Mom, where are you now?”
He said that because her voice sounded exactly like his mother's, but Otto quickly realized that it was his aunt.
I don't remember what explanation I heard from my aunt after that.
These words just echoed endlessly in my empty head.
… …Mom and Dad were murdered.
--- p.69 From Chapter 2
(……)
“Well, I’m sure my mother wore both the hat and the muffler often in the winter.
… … But why are you wearing such thick clothes and a hot pack?”
“The temperature on White Day night was low for March, and the destination was an empty house with no heating or anything.
It wouldn't be strange if you brought a hot pack in case you got cold.
In fact, trace amounts of iron filings, presumably from hot packs, were found on the clothes and pockets of both people.”
There are two key elements to achieving the perfect crime.
The first is the ability to logically predict everything, and the second is the prudence to be fully prepared to respond even if the unpredictable occurs.
-Always think logically, don't be reckless, and always be cautious.
I only participate in matches where I have a good chance of winning.
--- p.11 From the "Prologue"
(……)
This child clearly sees me.
I was so captivated by the girl's devilish gaze that I couldn't lift a finger.
The girl opened her mouth.
“I finally met the perfect criminal contractor.”
“How… that name?”
Instead of answering, the girl lightly kicked the floor.
The girl threw the baby's breath and at the same time struck my chest with her axe.
--- p.26 From Chapter 1
(……)
March 14, 5:30 PM
On White Day, eat some taffy.
After I locked myself out of Cafe Lupin, I descended the grimy stairs that hadn't been waxed in years.
It's usually open until 8pm, but it closed early today.
There was a regular customer who would come in every evening, order a cup of apple tea, and sit down in the shop to chat with me, but I barely managed to kick him out of the shop.
-I'm planning to meet someone tonight.
Before that, we need to prepare in many ways.
--- p.47 From “Interlude 1”
(……)
The silence was suddenly broken by the ringing of a phone.
Ottoha picked up the receiver in a hurry.
“Mom, where are you now?”
He said that because her voice sounded exactly like his mother's, but Otto quickly realized that it was his aunt.
I don't remember what explanation I heard from my aunt after that.
These words just echoed endlessly in my empty head.
… …Mom and Dad were murdered.
--- p.69 From Chapter 2
(……)
“Well, I’m sure my mother wore both the hat and the muffler often in the winter.
… … But why are you wearing such thick clothes and a hot pack?”
“The temperature on White Day night was low for March, and the destination was an empty house with no heating or anything.
It wouldn't be strange if you brought a hot pack in case you got cold.
In fact, trace amounts of iron filings, presumably from hot packs, were found on the clothes and pockets of both people.”
--- p.250 From Chapter 3
Publisher's Review
2025 "This Mystery is Amazing!" 4th Place
2025 "Top 10 Authentic Mysteries" #7
2024 Weekly Mystery Top 10: 9th place
2025 "I Want to Read a Mystery!" #5
The latest work from mystery writer Hojo Kiye, a true mystery rookie.
In 2019, Hojo Kiega, who made a splendid debut by winning the Ayukawa Tetsuya Award, the representative full-fledged mystery novel, has returned to domestic bookstores with his new work, "A Perfect Crime Not Suitable for a Girl," which was simultaneously nominated for Japan's top four mystery rankings.
This work was born from the author's love and understanding for Kazuki Sakuraba's novel "A Job Not Suitable for a Girl" and its title pays homage to it.
Going back to P.
It is also very interesting that the original work is D. James's 1972 mystery novel, "A Job Unsuitable for a Woman."
As with all three works, the protagonist is a woman.
Since its debut, Hojo Ki has expanded its world with novel and diverse special settings, and with this new work, it dazzles readers with 'characters' that have evolved one step beyond its previous style and solid 'logic'.
Mystery critic Teruyuki Hashimoto praised the work, saying, "It is a work that is full of attractions that entertain readers on a whimsical stage."
Among the Japanese mystery writers who have recently undergone a generational shift, Hojo Kiye has steadily risen to prominence as a leader in the "young mystery" genre, and is therefore a writer whose future is more anticipated than today, or rather, more feared.
'Girl × Ghost' = A Mysterious Cooperation of Opposites That Couldn't Happen
The story begins at the same time, in a different place, with a strange misfortune.
This is a mystery revenge drama about a girl named 'Otoha' who is obsessed with revenge after losing her parents horribly and meets 'Kuroha', a perfect criminal agent who fell from a building and became a ghost, and searches for the culprit.
This incongruous yet strangely harmonious relationship of opposites becomes the key to solving the work's inexplicable murder method.
Ottoha has strong action power, but he is still young and has many limitations.
On the other hand, Kuroha has no physical body but boasts specialized criminal know-how.
The two overcome dangerous crises and uncover the truth with strategies that complement each other's weaknesses, but solving the difficult problem is no easy task.
However, if you follow the lively conversation between the two, which includes interesting negotiations over revenge and explanations of difficult tricks, anyone can easily and effortlessly settle into the mystery.
Just as nothing can be accomplished without mutual trust and cooperation in a two-person triangle race where two people tie each other's legs and run in sync, the investigative skills of the two main characters, which could never have come to fruition, provide the thrill and excitement of deduction to readers looking for a fresh, authentic mystery.
There are only seven days left.
Their revenge, which is completed, or rather, grows, by being 'together' rather than 'separately', will present a surprising solution.
A masterpiece of foreshadowing, where the truth is overturned by a small clue.
"A Perfect Crime Not Suitable for a Girl" is a special mystery that combines a locked room murder and multiple detective stories, and is being praised as a "masterpiece of foreshadowing."
The puzzles that appear as if they are pressing are also one of the charms of this work.
The elaborate clues that were seemingly inadvertently incorporated earlier inevitably appear at least once in the latter half, and function as an ingenious pattern of returning to the starting point that breaks the rules one by one.
Readers work together to arrive at a single truth, but just when it seems like it's settled, it's quickly overturned, or another issue arises, making it difficult to reach a conclusion.
The final chapter even presents a new charm in that the mystery world of the book is neatly organized in a way that even the title is completely recovered.
Against the backdrop of a snow-covered, closed room, 'mysterious footprints on the ceiling', 'the bodies of a man and a woman presented upside down', 'serial killer', 'time limit', 'poison'... ... are revealed one after another.
The real culprit is right here, in Shinonomecho, where the incident occurred.
Meanwhile, an Amazon Japan reviewer who loves mystery novels praised the work with meaningful words.
“In a good way, I was completely betrayed by Hojo Gi.”
2025 "Top 10 Authentic Mysteries" #7
2024 Weekly Mystery Top 10: 9th place
2025 "I Want to Read a Mystery!" #5
The latest work from mystery writer Hojo Kiye, a true mystery rookie.
In 2019, Hojo Kiega, who made a splendid debut by winning the Ayukawa Tetsuya Award, the representative full-fledged mystery novel, has returned to domestic bookstores with his new work, "A Perfect Crime Not Suitable for a Girl," which was simultaneously nominated for Japan's top four mystery rankings.
This work was born from the author's love and understanding for Kazuki Sakuraba's novel "A Job Not Suitable for a Girl" and its title pays homage to it.
Going back to P.
It is also very interesting that the original work is D. James's 1972 mystery novel, "A Job Unsuitable for a Woman."
As with all three works, the protagonist is a woman.
Since its debut, Hojo Ki has expanded its world with novel and diverse special settings, and with this new work, it dazzles readers with 'characters' that have evolved one step beyond its previous style and solid 'logic'.
Mystery critic Teruyuki Hashimoto praised the work, saying, "It is a work that is full of attractions that entertain readers on a whimsical stage."
Among the Japanese mystery writers who have recently undergone a generational shift, Hojo Kiye has steadily risen to prominence as a leader in the "young mystery" genre, and is therefore a writer whose future is more anticipated than today, or rather, more feared.
'Girl × Ghost' = A Mysterious Cooperation of Opposites That Couldn't Happen
The story begins at the same time, in a different place, with a strange misfortune.
This is a mystery revenge drama about a girl named 'Otoha' who is obsessed with revenge after losing her parents horribly and meets 'Kuroha', a perfect criminal agent who fell from a building and became a ghost, and searches for the culprit.
This incongruous yet strangely harmonious relationship of opposites becomes the key to solving the work's inexplicable murder method.
Ottoha has strong action power, but he is still young and has many limitations.
On the other hand, Kuroha has no physical body but boasts specialized criminal know-how.
The two overcome dangerous crises and uncover the truth with strategies that complement each other's weaknesses, but solving the difficult problem is no easy task.
However, if you follow the lively conversation between the two, which includes interesting negotiations over revenge and explanations of difficult tricks, anyone can easily and effortlessly settle into the mystery.
Just as nothing can be accomplished without mutual trust and cooperation in a two-person triangle race where two people tie each other's legs and run in sync, the investigative skills of the two main characters, which could never have come to fruition, provide the thrill and excitement of deduction to readers looking for a fresh, authentic mystery.
There are only seven days left.
Their revenge, which is completed, or rather, grows, by being 'together' rather than 'separately', will present a surprising solution.
A masterpiece of foreshadowing, where the truth is overturned by a small clue.
"A Perfect Crime Not Suitable for a Girl" is a special mystery that combines a locked room murder and multiple detective stories, and is being praised as a "masterpiece of foreshadowing."
The puzzles that appear as if they are pressing are also one of the charms of this work.
The elaborate clues that were seemingly inadvertently incorporated earlier inevitably appear at least once in the latter half, and function as an ingenious pattern of returning to the starting point that breaks the rules one by one.
Readers work together to arrive at a single truth, but just when it seems like it's settled, it's quickly overturned, or another issue arises, making it difficult to reach a conclusion.
The final chapter even presents a new charm in that the mystery world of the book is neatly organized in a way that even the title is completely recovered.
Against the backdrop of a snow-covered, closed room, 'mysterious footprints on the ceiling', 'the bodies of a man and a woman presented upside down', 'serial killer', 'time limit', 'poison'... ... are revealed one after another.
The real culprit is right here, in Shinonomecho, where the incident occurred.
Meanwhile, an Amazon Japan reviewer who loves mystery novels praised the work with meaningful words.
“In a good way, I was completely betrayed by Hojo Gi.”
GOODS SPECIFICS
- Date of issue: November 7, 2025
- Page count, weight, size: 528 pages | 610g | 135*195*30mm
- ISBN13: 9791192738642
- ISBN10: 1192738640
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