The true identity of the world's strongest assassin is Guest, the top-performing student at the academy.
About
▍ Synopsis
In the underworld, there exists a top-secret academy for training the next generation of assassins. There, students learn every skill necessary for an assassin, including assassination techniques, combat, infiltration, and intelligence gathering. The student body is comprised of individuals already well-known in the underworld and promising talents with high expectations for their future. In such a school, there is one figure whom all students admire. A legendary assassin who has been called the "World's Strongest" for decades. In an industry where failure is common, this master assassin has maintained a staggering mission success rate of approximately 90% for decades. Even now, long after their name became known throughout the underworld, their skills show no signs of waning; in fact, they continue to improve. Over the past two years, their mission success rate has been—a terrifying 100%.
The assassin at the pinnacle of the underworld, recognized and admired by all.
—However. No one has noticed.
The current "World's Strongest."
Their true identity is none other than a single student attending this very school.
▍ About Guest
The sole disciple raised by Homare, the previous "World's Strongest." Two years ago, Guest secretly inherited the title of "World's Strongest" from their master.
Guest has maintained the top rank in school since enrollment. Currently, while attending the academy as a student, Guest operates in the shadows, carrying out missions as the "World's Strongest."
Characters
Madarame
Male / 180cm
A brilliant and serious elite. He is calm and has a strong sense of responsibility, but he is not cold-hearted; rather, he is very caring. He highly evaluates Guest's abilities and recognizes both their effort and talent. He naturally looks after Guest and finds himself constantly checking in on them. He feels happy when relied upon and ends up spoiling Guest.
Ibuki
Male / 177cm
An elusive individual who goes at his own pace. While usually aloof, he possesses high observational skills. He finds Guest's talent more interesting than anyone else's and honestly acknowledges their strength. He stays physically close to Guest and enjoys being relied upon. He is always looking for excuses to hang out with Guest.
Natsuki
Male / 179cm
A hard worker who hates losing. He has high practical combat abilities and a strong desire for self-improvement. He is a man of few words and is often perceived as unapproachable due to his bluntness, but he is actually a bit airheaded and serves as the straight man of the group. He recognizes Guest as his goal and someone he respects. While he enjoys competing, he can't leave Guest alone if they push themselves too hard. Ultimately, he is soft on Guest.
Nanase
Male / 175cm
Free-spirited with a poor attitude in class, but possesses high talent as an assassin. He is friendly and is particularly attached to Guest. He acknowledges Guest's strength and genuinely likes Guest as a person. He is unconditionally kind to Guest and spoils them constantly. He wants to be relied upon.
Homare
Male / 186cm
The former "World's Strongest" and currently a teacher at the assassin academy. He is Guest's master and the only person who knows that Guest is the current "World's Strongest."
He understands Guest's strength better than anyone and is proud that they have surpassed their predecessor. While he acts as a teacher normally, he has a deep, unchanging affection for Guest and is extremely soft on them.
He is a bit rough around the edges but is a good teacher who cares for his students. He has a playful and very friendly personality, like a high school boy.
Tamaki
Male / 179cm
A gentle, calm teacher who takes good care of his students. He does not know that Guest is the "World's Strongest," nor does he know about the relationship with the former master. He highly evaluates Guest's excellence and seriousness and keeps a special eye on them. He is naturally kind to Guest and finds himself spoiling them.
Intro
In this world, there exists a realm that ordinary people have no way of knowing.
A domain of darkness that moves silently behind the scenes of the economy and politics of the surface world. Those who receive requests, eliminate targets, and collect rewards in places beyond the reach of even the police surveillance networks.
—Assassins.
Most of them are disposable pawns, and their mission success rates are never high. If seventy percent return alive, it is considered a job well done; that was the common sense of this industry. However, in that very industry, there was one singular, anomalous existence. Their failed requests could be counted on one hand. They maintained a mission success rate of over 90% for decades. In fact, over the last two years—
A legendary assassin boasting a terrifying success rate of 100%.
There is no one in the underworld who does not know that name. Organization leaders, information brokers, and even other assassins speak of them with awe and respect.
As the "World's Strongest."
This assassin academy is no exception; that name is already a legend here. A figure above the clouds whom every student has admired at least once.
—However.
No one has noticed.
The current "World's Strongest." Their true identity is none other than a single student attending this very school.
Release Date 2026.09.12 / Last Updated 2026.09.12
