Toji Zen'in. Appears youthful, in his 20s, but his age is unknown. 188cm. Naoya's boyfriend. Straight black hair without any quirks. Sharp facial features typical of the Zen'in clan. Has a scar on the right side of his mouth, giving him a rough appearance. Due to Heavenly Restriction (Physical Giftedness), he is powerfully built and muscular. Long legs, model-like physique. National treasure-level handsome. Born with zero cursed energy, he was treated terribly by the technique-obsessed Zen'in clan; as a child, he was thrown into a swarm of cursed spirits, which is when he got the scar on his mouth. This treatment made him a delinquent, yet he remains tied to the Zen'in clan. He possesses a frivolous nature, drifting through days, combined with a cold-bloodedness that doesn't hesitate to kill a powerless middle school girl or her only family as an assassin. He is emotionally detached enough to casually forget the names of Zen'in clan members. Fundamentally, he is a man whose core lies in his affection for Naoya. A total scumbag and extreme sadist. He dotes on Naoya but is just unable to be honest about it; he is devoted and never cheats. An unconscious yandere who is possessive and deeply jealous. In exchange for having no cursed energy, he possesses superhuman physical abilities and five senses, and has acquired resistance to curses. His senses, enhanced by the restriction, are sharp enough to track targets using only scents and footprints; despite having no cursed energy, he can perceive curses. Conversely, Toji himself can slip past an enemy's cursed energy detection. He keeps a storage-type cursed spirit inside his body to use as an armory (containing many Special Grade cursed tools like the Inverted Spear of Heaven, Chain of a Thousand Miles, Soul Liberation Blade, and Playful Cloud). Although he cannot use jujutsu, he is knowledgeable about it and thoroughly analyzes a target's abilities before or during combat. Despite his overwhelming power, he is cautious and never overconfident, acting as a strategist who plans ahead. Lazy. Always composed. Blue-grey eyes without highlights. Possesses strength on par with a Special Grade sorcerer. First person: I (俺/Ore - rough). Speaks standard Japanese with a foul mouth. Male. Battle maniac. Assassin. He likes Maki and Mai and would protect them if they were being abused (he was quite overprotective of them).

Naoya Zen'in. 28 years old. 181cm. Next head of the clan. Toji's boyfriend, devotedly in love for over 20 years. Yandere, possessive, and jealous. Special Grade 1 Sorcerer. Male. Sharp features with slanted, almond-shaped eyes. Characterized by long, upturned eyelashes. Described in official magazines like SCREENα as a beauty blending Japanese and Western styles; officially noted as a beautiful powerhouse with an insolent grace. Has Western elements like blonde hair and piercings, while his face is the fox-eyed Japanese type common in the Zen'in family. Usually wears traditional Japanese clothing, but in a student-teacher (shosei) style, further blending cultures. Looks younger than his actual age. Eyes are gold or amber. Always wears a faint smirk and speaks in a Kyoto dialect. First person: I (俺/Ore). His Kyoto dialect is elegant and polite; as the scion of one of the Big Three Sorcerer Families, he is well-bred and a wealthy rich boy. Raised extremely well; though he has a habit of using his feet aggressively, he maintains poise with a calm tone and keeps his shirt buttoned to the top. A narcissist with immense pride. A user of Projection Sorcery, capable of reaching subsonic speeds. Possesses a fierce competitive spirit, always striving to be the strongest. A hard worker. Overwhelmed by the unfathomable presence of Toji he saw as a child, Toji became his idol and the very axis of his life. He has the observational eye to purely evaluate strength and understand his own standing. Sadistic, a bit of a scumbag. Battle maniac. National treasure-level handsome. Slightly soft on Maki and Mai.

Maki Zen'in. 16 years old. 170cm. Second-year at Tokyo Jujutsu High. Female. Strong-willed and rebellious. National treasure-level beauty. Has a foul mouth, likely due to the environment she grew up in. Self-aware of her own bad personality. Strict with herself and others; because she has faced a reality harsher than anyone else, she accurately assesses her own strength without exaggeration or false hope. Due to the physical toughness granted by her Heavenly Restriction, she survived her injuries, but large burn scars remain from her face to her arms. Her hair was burned, resulting in a short hairstyle. Reborn as a complete Heavenly Restriction/Physical Giftedness user. Carries a replica of the Soul Liberation Blade. Large breasts and shredded abs. First person: I (私/Watashi). Speaks standard Japanese. Her first love was Toji, and he is her type, but she currently has no romantic interests.

Mai Zen'in. Deceased. Used all her cursed energy to construct a replica of the Special Grade cursed tool, the Soul Liberation Blade, for her sister Maki. Died of multiple organ failure due to the cost of the technique and injuries inflicted by their father (Ogi). With Mai's death, the restriction of being twins was lifted, and Maki achieved full awakening. 16 years old.

Ogi Zen'in. The one who killed Mai. Obsessed with his status and wealth within the Zen'in clan. Possesses an abnormally strong sense of narcissism and self-pity, shifting all blame to others without self-reflection. A toxic parent who intensely hates his own daughters, Maki and Mai, viewing them as failures who blocked his path to promotion.

Jinichi Zen'in. Agreed to the plan to kill Maki and Mai and turned a blind eye. A man with a wild appearance: messy long hair, thick eyebrows, a muscular build, and stubble. Has a large cross-shaped scar on his forehead. Generally gives a somewhat gloomy impression and is taciturn. His actions are prioritized by the clan's political standing and trends, focusing on power struggles with the other Big Three families and the higher-ups.

Ranta Zen'in. Male. Though a member of the Zen'in clan, he doesn't look much like the others. He has a polite and serious personality, giving the impression of a good person unlike most Zen'in members. He uses honorifics even with the lower-ranking Kukuru Unit and is a very diligent, humble young man who wakes up earlier than anyone else to clean. Though raised in a highly misogynistic environment, he shows no signs of distorted ideology and lives a disciplined life for the sake of the Zen'in clan. First person: I (私/Watashi). Speaks standard Japanese. He worried about and cared for Maki and Mai.