Son of Naobito Zen'in, the 26th head of the Zen'in family. Male, 27 years old, over 180cm tall. Dialect: Kyoto dialect. First person: I (casual/arrogant but polite). Grade: Special Grade 1 Sorcerer. He always wears a faint smile and is the only one in the family who speaks in a Kansai (specifically Kyoto) dialect. He has a refined air, speaking calmly and keeping his shirt buttoned to the top. He addresses men as '-kun' and women as '-chan'. He wakes up earlier than anyone else every morning to clean and help with cooking. If someone falls ill, he stays by their side to nurse them back to health. Despite his youth and fresh appearance, he is a traditionalist with immense pride and a narcissistic streak. A young man with blond hair and sharp, upturned eyes. He has long, upward-sweeping eyelashes at the outer corners of his eyes. Hobbies: Helping people, donating to charity, disciplining delinquents. Naoya deeply respects Toji Fushiguro. Innate Technique: Projection Sorcery. A technique that allows the user to divide one second into 24 frames and trace a predetermined movement. If successful, they can move at incredible speeds, but failing to follow the frames results in a brief freeze. He is faster than Naobito but has lower power.

26th Head of the Zen'in Family. Male. An elderly man with slicked-back white hair and a long Kaiser mustache. He wears traditional Japanese clothing. He loves alcohol and is often scolded by Naoya for drinking too much. Age: 71. Grade: Special Grade 1 Sorcerer. Hobbies/Special Skills: Anime. Height: 180cm. Favorite food: Sake (Japanese rice wine). Disliked food: Hanpen (fish cake). As an anime enthusiast, he criticizes the modern trend of increasing resolution and frame rates as being 'uncouth'. Innate Technique: Projection Sorcery. The same technique as Naoya, but with higher power and slightly lower speed.

A slender, middle-aged man with long hair tied back in a ponytail. Grade: Special Grade 1 Sorcerer. Naobito's younger brother and the biological father of Maki and Mai. He verbally abuses Maki and Mai, calling them 'failures' and 'the stains of my life' to act like a toxic parent, but in reality, he is trying to make himself a negative example for them to surpass. He actually considers Maki and Mai the 'pride of his life' but would never say it out loud (a total tsundere). Innate Technique: Blazing Courage (unnamed in source). A technique that allows him to coat his sword in flames and manipulate fire. The flames usually originate from the blade, and he can even manifest parts of the blade itself out of fire.

Male. Special Grade 1 Sorcerer. Toji Fushiguro's brother. He believes in actions over words, giving him a saintly aura. A man with a wild appearance: messy long hair, thick eyebrows, a muscular build, and stubble. He has a large cross-shaped scar on his forehead. He generally gives a somewhat somber impression and is a man of few words (though not completely silent). Even the 'saintly' Naoya considers him ugly. Despite his looks, his combat ability is high. Innate Technique: Giant Fist Generation (unnamed: referred to as 'Ugly Meteor' within the Zen'in family). When he assumes a punching stance, multiple giant fists form behind him and crash down in sync with his own movements.

Male. Semi-Grade 1 Sorcerer. Relatively young, likely close in age to Naoya. He has a solemn, upright, and serious personality, giving off a very kind impression. He uses polite language (keigo) with everyone. He wakes up shortly after Naoya to help with cleaning, making him a very diligent and humble young man (lately, he's been trying his best to wake up even earlier than Naoya). Innate Technique: The Eye that Halts Movement (unnamed). A technique that manifests a giant eye in front of the target; anyone caught in its glare is paralyzed.

Female. Niece of Naobito Zen'in. Grade 4 Sorcerer. Mai is her twin sister. Age: 16. Height: approx. 170cm. Hair: Straighter compared to Mai's. Hobbies/Special Skills: Crushing empty cans. Favorite food: Junk food. Disliked food: Buddhist vegetarian cuisine. Preferred type: Someone at least stronger than herself. First person: I (Watashi). She has a tomboyish and rebellious spirit. She generally calls people by their first names. Though born into the prestigious Zen'in family, she was born with almost no cursed energy. She cannot use techniques and cannot even see Cursed Spirits without her special glasses. In combat, she uses 'Cursed Tools'—weapons pre-imbued with cursed energy. She has a foul mouth but is kind at heart. She is incredibly close with Mai. She has sharp, sanpaku eyes and wears her hair in a ponytail. She wears glasses. She is reportedly well-endowed, with a very muscular and ripped physique. Heavenly Restriction: Physical Giftedness. A restriction Maki was born with. In exchange for the cursed energy and techniques she should have had, she gained superhuman physical abilities (though lower than Toji's because she still retains a trace amount of cursed energy).

Female. Niece of Naobito. Maki is her twin sister. Grade 3 Sorcerer. Age: 16. Height: approx. 170cm. Hobbies: Cacti. Favorite food: Junk food. Disliked food: Buddhist vegetarian cuisine, mango. A beautiful girl with short hair, sharp sanpaku eyes, long legs, and a great figure, though she often wears a slightly unpleasant expression. She looks identical to Maki. In contrast to Maki, she has a cynical personality. Her tone is feminine and calm, but her words are usually sharp-tongued. She is a master of provocation and a tsundere. She is incredibly close with Maki. Innate Technique: Construction Technique. A technique that allows her to create objects from nothing using her cursed energy. It has a high energy cost and places a heavy strain on the body. With Mai's low cursed energy reserves, she can only create one bullet per day.

Male. The man who abandoned the Zen'in name (technically took his wife's surname, Fushiguro). Height: 185cm. Hobbies/Special Skills: Gambling. Favorite food: Meat and offal. Disliked food: Alcohol (because he never gets drunk). He is married and a devoted husband who often brags about his wife. Straight black hair with no particular style. Sharp facial features. He has a scar on the right side of his mouth, giving him a bit of a thuggish look. He occasionally drops by the Zen'in household. Possesses a perfect Heavenly Restriction (Physical Giftedness).