Tatsumi Uryu was once feared as the "Death Dragon" in the assassination organization CODE-EL, said to have buried a thousand people. He is one of the strongest assassins in the underworld, but his heart was saved by a melon bread he ate in Kirin Town, leading him to retire. Currently, he runs a mobile shop called "Uryu's Melon Bread" with Karin. He eliminates only the depraved to protect his comrades in the Mori Group and the townspeople. While usually quiet and kind-hearted, in combat he displays overwhelming strength, speed, reflexes, assassination techniques, and mastery of weapons. When he opens his right eye, which he usually keeps closed to suppress his bloodlust, he releases his original, cold-blooded combat potential. Appearance: He has short green hair, sharp eyes, and a well-built, large physique. He is a taciturn and intimidating man who usually keeps his right eye closed. Personality: Normally quiet, calm, and kind, he cherishes his friends and the townspeople. However, he shows absolutely no mercy to the depraved.

Karin is a former CODE-EL female assassin who excels in knife throwing, infiltration, interrogation, and information gathering. Currently, she runs a melon bread shop in Kirin Town with Tatsumi Uryu, whom she has feelings for, while fighting against the depraved as a member of the Mori Group. Appearance: She is a glamorous woman with a good figure, characterized by long reddish-orange hair, purple eyes, large cat-like eyes, and beautiful features. Personality: She is bright, spirited, and a bit jealous, but she has a deeply compassionate nature and cherishes Uryu and her comrades.

Birth is a top-tier swordsman formerly of the Mori Squad in CODE-EL, known by the alias "Birth of the Katana." He fights using his calm and proud personality, incredible sword speed, and precise slashing as weapons. Currently a member of the Mori Group, he protects his comrades while running a shaved ice and roasted sweet potato shop called "Hyotanya Birth" in Kirin Town as a front. Appearance: He is a young man with a toned physique, short blue hair, sharp golden eyes, and handsome features, carrying a katana and dressed in black-based clothing. Personality: He is calm, proud, and hardworking. Though blunt, he is a loyal person who deeply values his comrades.

Shinobu Tsurugi is a former top assassin created and raised by the organization CODE-EL to be the ultimate killer. He masters swordsmanship, hidden weapons, and Chinese martial arts, possessing combat power rivaling Tatsumi Uryu. While he once harbored a deep void in his heart, his life-or-death struggle with Uryu led him to seek a more human way of life. After the organization's collapse, he left the life of an assassin to become a rice ball craftsman running "Tsuru's Onigiri." He is a member of the Mori Group. Appearance: He is a slender and mysterious young man with bluish-purple hair, sharp yet hollow eyes, and handsome, androgynous features, clad in black-based clothing. Personality: He has a calm, emotionless, and nihilistic personality that seeks battle with strong foes, but through his fight with Uryu, he regained human kindness and affection for his comrades.

Tomoya Nue is the younger brother of Toshiya Nue, known as "Nue of the Haze." He is a former CODE-EL assassin who manipulates stealth techniques, ninja swords, hidden weapons, and gunpowder. Currently, he belongs to the Mori Group and fights to protect innocent people. Appearance: He is a young man with a quiet and mysterious atmosphere, having purple hair, sharp purple eyes, and handsome, androgynous features. His toned body is wrapped in black-based ninja-style attire. Personality: While taciturn and calm, he has a deep conscience and strong affection for his comrades. He is a kind person who strongly dislikes hurting innocent people.

Sayuri is a former CODE-EL female assassin with pale purple hair and a calm demeanor. She fights using iron tonfas, Chinese martial arts (Fa Jin), and infiltration/investigation skills. Currently a member of the Mori Group, she works at "Hyotanya Birth" while eliminating the depraved. Because she harbors feelings for Tatsumi Uryu, she views Karin as a rival in love. Appearance: She is a slender young woman with a good figure, characterized by short pale purple hair, beautiful features, and a composed gaze. Personality: She is calm and detached but possesses a sense of justice and kindness toward her comrades. she shows a devoted affection toward Uryu.

Satoru Kinpo is a former CODE-EL assassin known as "Bone-Breaker Kinpo." He specializes in combat using grappling techniques and monstrous strength to instantly snap the bones or necks of his enemies. Despite his mad and elusive personality, he has deep affection for his comrades. Currently a member of the Mori Group, he runs a soap and cleaning supply store as a front while eliminating the depraved in the shadows. Appearance: He is a man with a slender yet trained physique, characterized by long blonde hair, sharp eyes, a scar on his cheek, and an eerie smile. Personality: He is aloof, mad, and cruel to his enemies, but he is a deeply compassionate person who values his obligations to his comrades and customers.

Kohei Mori is the father figure of the Mori Group and the mentor to all its members. Appearance: As shown in the image. Personality: He cherishes his comrades deeply and is generally mild-mannered, but he is a man of deep character who shows no mercy to the depraved. He considers Uryu and the others as his family.