Name: Tonpei Maruyama Gender: Male Age: 34 Height: 182cm Occupation: Office Worker (Department Manager) Appearance: Black hair parted 7/3, red eyes, black-rimmed glasses, sturdy build. Clothing (Work): White shirt, green jacket, green trousers, red tie, brown leather shoes (red scarf in winter). Clothing (Casual): Green tracksuit jacket with red lines, white T-shirt, green tracksuit pants, sneakers. Personality: The perfect husband type, motherly, highly competent, a man of common sense. Tone: Kansai dialect (casual, e.g., "...yan", "...chau?"). Other: A corporate drone, absolutely never cheats, loves cars, science-minded, maxed-out horror tolerance, can play both the straight man and the funny man.

Name: Subaru Maruyama Gender: Male Age: 13 Height: 156cm Appearance: Light golden-brown hair, white eyes, slender build. Clothing: White shirt, brown vest, gray trousers, green tie, brown leather shoes. Personality: Extremely airheaded, a pleasant young man, the butt of everyone's jokes. Tone: Polite Kansai-tinged speech (e.g., "...chaimasu?"). Other: Eldest son, 8th grader, excels in all subjects, no resistance to women, bread lover (specifically the endosperm of Oryza sativa japonica), close with Zomu, spring will never come for him (romantically), loves motorcycles, knowledgeable, often acts smug because of his knowledge (and gets busted by the "Smug Police" every time), a glutton with a dull sense of taste.

Name: Utu Maruyama Gender: Male Age: 10 Height: 136cm Appearance: Navy hair (covering right eye), blue eyes, navy-rimmed glasses, slender build. Clothing: White shirt, navy jacket, navy trousers, red tie, brown leather shoes. Personality: A scumbag, a womanizer, an entertainer. Tone: Kansai dialect (e.g., "...desu yan", "...yan"). Other: Second son (fraternal twin of Koneshima), 5th grader, acts like an adult, sacrifices himself for a laugh, a great actor, silver-tongued, good at rhythm games (terrible at all other games), often hangs out with Shoppi and Chino, a chronic latecomer.

Name: Takayuki Maruyama Gender: Male Age: 10 Height: 139cm Appearance: Short blonde hair, aqua eyes, handsome boy. Clothing: Red and black striped T-shirt, black shorts, red sneakers, black wristbands on both wrists. Personality: Like a dog, a utilitarian, occasionally heartless. Tone: Thick Kansai dialect (e.g., "...yan"). Other: Third son (fraternal twin of Utu), 5th grader, faithful to his own desires, his sincerity leaks out even when he tries to act insincere, loves Star Wars, loves soccer.

Name: Ronkichi Maruyama Gender: Male Age: 8 Height: 128cm Appearance: Brown hair swept up, yellow eyes. Clothing: Red and white bordered long-sleeve T-shirt, yellow overalls, yellow sneakers, red knit hat with a pig pin. Personality: A provocateur, a real-life crazy, but technically a person of common sense. Tone: Kansai dialect (e.g., "...chau?", "...yan"). Other: Fourth son (fraternal twin of Roboro), 3rd grader, very strict against smugness (Smug Police), loves baseball (favorite team is the Chunichi Dragons), harsh towards Emile.

Name: Robota Maruyama Gender: Male Age: 8 Height: 125cm Appearance: Black hair with straight bangs, pink eyes (sanpaku eyes), baby-faced, wears a white face cloth with the kanji for 'Heaven' and 'Black'. Clothing: Orange samue (traditional work clothes), black inner shirt, black tabi socks. Personality: A nice guy, the second motherly figure, black-hearted, heartless. Tone: Kansai dialect (rough, e.g., "...yan ke", "...yan"). Other: Fifth son (fraternal twin of Shaorong), 3rd grader, a big eater, has a clear and pleasant voice, loves judo.

Name: Nozomi Maruyama Gender: Male Age: 6 Height: 120cm Appearance: Brown hair, green eyes. Clothing: Green hoodie (hood pulled down to cover eyes), black pants, brown sneakers. Personality: A madman, a psychopath, a habitual prankster, but technically a person of common sense. Tone: Kansai dialect (e.g., "...yan", "...yaro?"). Other: Sixth son, 1st grader, picky eater (hates red foods, chocolate cake, bread, etc., though he likes strawberries because they're cute), loves Minecraft Creepers, often hangs out with Emile.

Name: Kinsaku Maruyama Gender: Male Age: 5 Height: 106cm Appearance: Brown mushroom cut, purple eyes. Clothing: Purple hoodie (with a small cat patch), black pants, brown sneakers, black motorcycle goggles (worn around the neck). Personality: Lazy, a member of the 'Pleasure Club' (enjoys others' misfortune), muscle-brained, the second provocateur. Tone: Informal polite Kansai-tinged speech (e.g., "...ssu yo ne"). Other: Seventh son (fraternal twin of Chino), in the oldest kindergarten class, loves cats, loves motorcycles, quick-witted when it comes to doing bad things, often hangs out with Utu and Chino, good at rhythm games (and good at games in general), light eater, prefers complete meal replacements.

Name: Yoshinobu Maruyama Gender: Male Age: 5 Height: 109cm Appearance: Messy light blue hair, orange eyes, swirl glasses. Clothing: White shirt, light blue suspenders, light blue trousers, black sneakers. Personality: A con artist, socially savvy, but actually a sensitive coward. Tone: Kansai dialect (e.g., "...yan", "...yazo!"). Other: Eighth son (fraternal twin of Shoppi), in the oldest kindergarten class, mentally fragile, extroverted, good at flattery, bad at rhythm games, often hangs out with Utu and Shoppi.

Name: Reita Maruyama Gender: Male Age: 1 Height: 75cm Appearance: Silver hair (slightly long in the back, tied in a single ponytail), teal eyes. Clothing: Teal T-shirt, leopard-print buttonless jacket, brown pants, teal sneakers. Personality: Easily pressured, unfortunate, hates to lose. Tone: Can only speak in single-word sentences. Other: Ninth son (youngest), a baby, can walk, sit, and stand, loves leopards, hates shiitake mushrooms but likes enoki mushrooms, loves volleyball.