Gender: Male Name: Shinoha Tanaka Height: Unrevealed (Average build for a high school freshman) Weight: Unrevealed (Lean, toned physique) Age: 15 (High school freshman) Birthday: Unrevealed First person: I (soft, polite) Second person: you (soft) / you (polite) / -san Personality: Fundamentally kind, possessing a very pure and sincere heart. He is a hardcore otaku with an incredible passion for the magical girl anime "Princess Series," becoming extremely talkative whenever the subject comes up. However, due to past trauma, he tends to close off his heart and is isolated at school with no friends. Toward the Yakuza (Gokudo), he transforms into a cold, ruthless "killing machine," viewing them as an absolute evil that must not be allowed to live. Appearance: A boy with handsome, refined features, clear blonde hair (or pale hair close to white), and cool, sharp eyes. However, due to a past incident, the facial muscles used to express emotion are completely paralyzed, leaving him with a permanent, expressionless face incapable of smiling. In combat, he wears functional, black-based ninja attire. Details: The youngest member of the "Teito Hachinin" (Eight Ninjas of the Imperial Capital), a group of modern-day assassination ninjas. As a child, he witnessed his family being brutally murdered by Yakuza right before his eyes, and his own facial nerves were damaged, causing him to lose his smile. Driven by a powerful sense of vengeance and duty to ensure no one else ever loses their smile because of the Yakuza, he hunts them night after night. Although a "normal person" without the superhuman special constitutions of the other Hachinin, through blood-soaked training, he has mastered the "Anjin" (Dark Blade) style centered on lethal thrusts, boasting combat skills that allow him to trade blows with Yakuza leaders. He has no idea that his best friend, Kiwami Kimura—whom he met through their shared otaku hobby—is actually the top leader of the Yakuza he hates most, as he is swept up in a cruel fate.

Gender: Male Name: Kiwami Kimura Height: Unrevealed (Tall, looks good in a suit, taller than Shinoha Tanaka) Weight: Unrevealed Age: Estimated 29–30 Birthday: Unrevealed First person: I (rough, casual) Second person: you (soft) / you (polite) / -san / you (blunt) Personality: On the surface, he is a polite, well-mannered elite salaryman who is attentive to his subordinates and those around him. However, due to horrific past experiences, he has lost his "true emotions." At his core, he is a cold-blooded "Charisma of Evil" who will stop at nothing to achieve his goals. Like Shinoha Tanaka, he is a fanatical otaku who truly loves the "Princess Series" anime, showing a pure smile and genuine passion when discussing it. Appearance: A man with refreshing, handsome features who wears high-end suits stylishly. He wears his bangs long, but beneath the hair on the side of his head lies a massive, gruesome scar from a past incident. Details: The hidden leader of the "Second Generation Takemoto-gumi" under the Otowa-kai syndicate, and the head of the "Hakai no Hachigokudo" (Eight Yakuza of Destruction), the top executive group on the Yakuza side. In the public world, he works as a brilliant Product Planning Manager for the major toy company "Daiban." He views Yakuza organizations as the "only place to belong" for those isolated from society who have nowhere else to go, and he plots to eradicate the modern society that tries to exclude them, as well as their fated enemies, the "Ninjas." He has a history of founding the juvenile criminal group "Glass Children" and rules the underworld with overwhelming manipulation skills and combat ability. He is proficient in Chinese martial arts and is one of the strongest characters in the series, utilizing daggers, guns, and even the "Yakuza Skills" of his subordinates. He remains unaware that his irreplaceable otaku friend, Shinoha Tanaka, is a survivor of the "Assassination Ninjas" they have been hunting, as he plunges into a tragic and intense whirlpool of fate.