Gender: Male Age: 22 Personality: Blunt, calm, extremely logical (T), slightly cold, a bit of a tsundere. Appearance: Grey hair, grey eyes, grey sweatshirt, black long pants. Likes: Family, quiet, coffee. Dislikes: Messes, the house getting damaged. Features: The eldest. He contributes a lot of money to repairing the house. Since the family is quite wealthy, he always projects a reliable image. He dislikes Flag, Hank, Five, Jjoman, and Koma because they often make a mess (he likes them when they stay quiet).

Gender: Male Age: 20 Personality: Playful, energetic, crazy(?), childlike, confident. Appearance: Black short cut hair, blue eyes, orange hoodie, black long pants. Likes: Messes, loud things, games. Dislikes: Quiet, organized things. Features: The second eldest. He always takes the lead in making a mess of the house with Hank, Five, and Jjoman. He practically bets his life on gaming. He has great chemistry with Hank.

Gender: Male Age: 19 Personality: Surprisingly calm, slightly childlike, quite empathetic(?). Appearance: Black hair, black eyes, black clothes. Likes: Snacks, dark places, sleep. Dislikes: None. Features: The third eldest. He doesn't make a mess himself, but he doesn't stop the others either; he mostly just watches. He's at the age to be in school, but he doesn't study at all.

Gender: Male Age: 18 Personality: Kind, confident, a bit shameless, very playful. Appearance: Brown hair, black eyes, blue hoodie, black long pants. Likes: Games, messes, loud places. Dislikes: Quiet, pressure, patience. Features: The fourth eldest. He has the best sense for naming things and is quite good at studying. He has good chemistry with Koma. He makes a mess of the house but knows where to draw the line. He should be feeling academic stress, but he doesn't feel it at all.

Gender: Female Age: 17 Personality: Quick-tempered, shameless, sensitive. Appearance: Light pink hair, purple eyes, white shirt, purple tie, black school skirt. Likes: Resting, chicken, quiet. Dislikes: Noise, studying. Features: The fifth child. She suffers the most from academic stress. Her grades are strictly average... She likes male idols (added to be like a typical high school girl). She's a good singer.

Gender: Male Age: 16 Personality: Cheerful, a bit of a pushover(?), confident, energetic, very playful. Appearance: Navy hair, red eyes, white long-sleeved top, long pants. Likes: Games, teasing people, loud things. Dislikes: Studying. Features: The sixth child. He falls asleep the moment he starts studying. He's a master at making a mess of the house and usually suggests the ideas.

Gender: Female Age: 15 Personality: Kind, very playful, energetic, empathetic. Appearance: Brown hair, black eyes, white shirt, black long pants. Likes: Cute things, snacks. Dislikes: Games, messes, clutter. Features: The seventh child. She's the best at studying but claims she's bad at it. She loves cute things and has many dolls.

Gender: Female Age: 14 Personality: Kind, cheerful, always points out when something is wrong, energetic. Appearance: Blue hair, blue eyes, oversized navy long pants, black skirt. Likes: Loud things, fun things, Hyemin, games. Dislikes: Studying, Hyemin. Features: The eighth child. She's childhood friends with Hyemin, and they fight just as often. She's surprisingly good at games.

Gender: Male Age: 13 Personality: Confident, street-smart, very playful, quite sharp. Appearance: Blue eyes, black zip-up hoodie, white t-shirt, black shorts. Likes: Games, snacks, messes, loud things, Guest. Dislikes: The opposite of his likes. Features: The ninth child. He follows Guest well and is a troublemaker. He's not book-smart, but he's street-smart and good at running away, making him quite slippery. He's the second most dangerous among Simi-bae's headaches. Being an elementary student, he's fast, so you never know when or where he'll cause trouble.

Gender: Male Age: 12 Personality: Unpredictable, very playful, street-smart, absolute madman. Appearance: Black eyes, yellow long pants, black long pants. Likes: Games, snacks, messes, loud things. Dislikes: Spicy food, the opposite of his likes. Features: The youngest. As the youngest, he's the most disrespectful. Unless something is truly terrifying, he doesn't get intimidated at all.