The Mantis by Kotaro Isaka (The Assassins Series, Book 3 of 4)

The Mantis by Kotaro Isaka (The Assassins Series, Book 3 of 4) – A Dark, Fast Tokyo Assassin Thriller

The Mantis by Kotaro Isaka (The Assassins Series, Book 3 of 4) follows Kabuto, a highly skilled contract killer who is tired of living a double life. At home, he is a husband and father. In the criminal world, he is an assassin controlled by a handler known as the Doctor. Kabuto wants to leave the business, protect his family, and live quietly. The Doctor has other plans.

To earn his freedom, Kabuto must complete more dangerous jobs. His final work pushes him toward other professional assassins and puts the people he loves at risk. That simple conflict gives the story its power: a man who can kill with skill may still be helpless when the danger reaches his home.

Kotaro Isaka turns this idea into a fast crime thriller filled with tension, strange characters, sharp humor, and sudden danger. It is a strong choice for readers who like Japanese crime fiction, assassin stories, dark comedy, and thrillers where every decision can create a new problem.

A Killer Who Wants to Go Home

Kabuto is not trying to become the best assassin in Tokyo. He already knows how dangerous he is. His real wish is much smaller: he wants to stop.

That is where the problem begins.

His handler, the Doctor, is both a real physician and a criminal contact. During appointments, the Doctor gives Kabuto new targets as if they were medical “prescriptions.” Kabuto wants out, but the Doctor sees him as a valuable worker. Leaving is not as easy as giving notice and walking away.

The Doctor finally offers him a way to buy his freedom. Kabuto must complete several final jobs, including work involving other professional killers. These jobs are more dangerous, more valuable, and much harder to survive.

The deeper Kabuto goes, the clearer one fear becomes: his secret life may no longer stay secret.

His family does not know who he really is. He wants to protect them from the world he entered, but the very work he must do to escape that world may bring danger closer to them.

That makes The Mantis more than a story about assassins. It is also about fear, regret, duty, family, and the cost of trying to change your life after going too far down the wrong road.

The Problem Is Not Killing—It Is Escaping

Many assassin thrillers ask whether the hero can finish a difficult mission. The Mantis asks a more personal question: can a professional killer stop being a killer?

Kabuto has the ability to survive dangerous work, but skill does not solve his main problem. His career has created a system around him. The Doctor controls access to jobs and freedom. Other assassins are threats. His family can become a weakness that enemies may use.

Kabuto therefore needs more than strength. He needs a way out.

This gives the book a different type of suspense. You are not only waiting to see who wins a fight. You are wondering whether Kabuto can protect his home, hide his past, complete the work forced on him, and still have a future when it is all over.

Readers who feel tired of thrillers built only around explosions and body counts may find this conflict more interesting. The danger is real, but the emotional reason behind it is easy to understand: Kabuto wants to keep the people he loves safe.

Fast Crime With a Strange Sense of Humor

Kotaro Isaka is known for mixing danger with humor, and The Mantis keeps that balance.

The story deals with hired killers and serious risk, but it does not stay heavy on every page. Odd conversations, unusual professional habits, strange criminal logic, and sharp comic moments break the tension without removing it.

That difference helps the book feel unlike a standard dark crime novel.

The official publisher describes The Mantis as a thriller set in Tokyo’s criminal underworld, with unusual assassin codenames, page-turning action, wild energy, and sharp humor. The English edition is translated by Sam Malissa.

Readers who liked the unusual tone of Bullet Train or Three Assassins will recognize this mix. The world is violent, but it is also clever, odd, and sometimes funny in ways that make the danger even more memorable.

Why Kabuto Is Easy to Care About

Kabuto is a killer, yet the story gives him a very human problem.

He is afraid of losing his family.

He worries about what will happen if his hidden life becomes known. He also wants to be present at home instead of spending his life waiting for another deadly assignment. The difference between the man his family sees and the man the criminal world knows creates constant pressure.

That tension makes Kabuto more than a simple action hero.

He may know how to eliminate a target, but family life gives him problems that cannot be solved with professional skill. He must manage fear, responsibility, secrecy, and regret. His wish for an ordinary life gives readers something clear to hope for even when his past makes that wish difficult.

A Strong Pick for Fans of Japanese Crime Fiction

Tokyo’s criminal underworld gives the novel its main setting, but the story is not built like a police investigation.

Instead, the reader moves through a hidden network of handlers, contracts, professional killers, and dangerous relationships. People can have unusual methods, odd names, and surprising roles. A normal meeting can carry a threat. A final assignment can turn into a fight for survival.

This world is one of the key attractions of Kotaro Isaka’s Assassins books.

The publisher identifies The Mantis as coming from the internationally bestselling author of Bullet Train and Three Assassins and describes it as a fast-moving thriller about a family man hiding his secret life as a hitman.

If you enjoy crime novels that feel stylish, unusual, and less predictable than a basic detective story, The Mantis offers that kind of experience.

What You Can Expect While Reading

The Mantis is built for readers who enjoy movement and tension. The story gives you professional assassins, secret assignments, family danger, criminal deals, and the growing fear that Kabuto may not be able to separate his two lives for much longer.

You can expect:

• A professional assassin trying to leave his job
• A dangerous handler called the Doctor
• Final assignments that become increasingly risky
• Other professional killers entering the conflict
• A family that does not know Kabuto’s secret
• Action mixed with dark and unusual humor
• A Tokyo criminal-underworld setting
• Questions about freedom, regret, loyalty, and survival
• A story where the emotional risk matters as much as the physical danger

These parts work together to make the book both exciting and personal. The fights matter because Kabuto has something to lose. The family scenes matter because the danger outside can reach home. Each side of his life makes the other side harder.

Made for Long Reading Sessions

A fast thriller is easy to enjoy when the physical book is comfortable to hold and read. Bookish Wonderland prepares this edition with readers in mind.

The book uses premium eye-soothing cream paper, which gives the pages a softer look than very bright white paper. The text is printed with crystal-clear quality so letters stay sharp and easy to follow. High-quality stitched and glue binding adds strength to the book and helps keep the pages secure through repeated reading.

These physical features are useful for readers who plan to finish the book over several sessions, reread favorite parts, or keep the complete Assassins Series together on a shelf.

You are not only buying a story for one weekend. You are adding a durable English book to your personal collection.

Who Should Buy The Mantis?

The Mantis is a strong match for readers who enjoy crime thrillers with unusual characters and a clear emotional reason behind the danger.

It may be especially suitable if you like:

• Assassin and hitman fiction
• Japanese crime novels
• Fast suspense
• Dark humor
• Secret double lives
• Family-centered danger
• Criminal-underworld stories
• Clever plots with strange characters
• Books where the main character wants to escape his own profession
• Kotaro Isaka’s Bullet Train and Three Assassins

Because the story includes assassins, killing, criminal activity, and mature themes, it is best suited to adult or mature readers.

What books are in the Assassins Series series by Kotaro Isaka?:

There are 4 books in this series:

• Bullet Train by Kotaro Isaka (Assassins Series, Book 1 of 4)
• Three Assassins by Kotaro Isaka (Assassins Series, Book 2 of 4)
• The Mantis by Kotaro Isaka (Assassins Series, Book 3 of 4)
• Hotel Lucky Seven by Kotaro Isaka (Assassins Series, Book 4 of 4)

Abrams also lists Bullet Train alongside Three Assassins, The Mantis, and Hotel Lucky Seven in its Assassins Series information.

If you are collecting the series in order, The Mantis takes the third position in the four-book list above. It gives the series a fresh central character while keeping the same strange criminal world and darkly comic energy readers expect from Isaka.

Best Sellers Rank of This Book

• #512,201 in Books
• #1,317 in Dark Humor
• #1,684 in Humor About Law & Crime
• #2,942 in Assassination Thrillers (Books)

These ranks are shown exactly as provided for this product listing.

Finding The Mantis at the Right Local Price

If you are checking the Book price in Bangladesh, visit the current Bookish Wonderland product listing to see the latest selling price and stock status for The Mantis by Kotaro Isaka.

Shopping from a local online bookstore also makes the buying process easier. Bookish Wonderland offers nationwide delivery across Bangladesh, including addresses inside and outside Dhaka. Cash on Delivery is available, so customers can order without needing to make an online payment first.

This makes The Mantis easier to buy whether you want it for yourself, as a gift, or as Book 3 for an Assassins Series collection.

Why Choose Bookish Wonderland?

A thriller this enjoyable deserves a physical copy that is pleasant to read and strong enough to keep.

Bookish Wonderland focuses on premium and durable English books for local readers. The Mantis combines a fast, unusual crime story with a physical edition designed for comfortable reading and long-term shelf use.

You also get a simpler local buying experience. Instead of arranging an overseas order, you can order within Bangladesh, choose Cash on Delivery, and receive the book through nationwide delivery.

For collectors, Bookish Wonderland also carries a large selection of English books, making it easier to build author, genre, and series collections in one place.

Step Into Kabuto’s Dangerous Double Life

Kabuto wants what sounds like a simple thing: to stop killing and go home.

But in his world, freedom has a price.

Every final job can pull him deeper into danger. Every hidden truth can threaten his family. Every professional assassin he meets can become one more reason he may never escape.

That is what makes The Mantis by Kotaro Isaka so easy to want to read. The action gives the story speed, the humor gives it personality, and Kabuto’s family gives the danger a real emotional cost.

If you enjoyed the criminal chaos of Bullet Train, like Japanese thrillers, or want an assassin story that is about more than completing a target, The Mantis deserves a place on your reading list.

Order your copy from Bookish Wonderland and discover whether a man who has spent years ending lives can finally save the life he wants for himself and his family.

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