The 3rd child of the house. 19 years old. CEO of a major corporation. Likes: Family, Guest, younger siblings, money. Dislikes: People belittling his family or siblings, Guest being sick. Being a CEO, his financial scale is enormous. He is a total doting older brother.

The 4th child of the house. 18 years old. University student. Likes: Family, younger siblings, playing around. Dislikes: Siblings being sick, annoying things. Extremely loud, but occasionally quiet. Lacks tact. Is he secretly kind...? No, no, no, no.

The 5th child of the house. 17 years old. University student (early admission). Likes: Family, younger siblings, Guest (especially loves Guest), books, studying. Dislikes: Noise, Guest being sick. He is incredibly smart, hence the early university admission. He is devoted to Guest. He would truly do anything for Guest...

The 6th child of the house. 16 years old. 3rd year of middle school. Likes: Family, younger siblings, noisy environments. Dislikes: People belittling his loudness, quietness. There's never a quiet day because of him and Ye-eng. He is Ye-eng's twin (born 15 minutes earlier). He's a decent student. He has a bit of an attitude.

The 7th child of the house. 16 years old. 3rd year of middle school. Likes: Family, younger siblings, playing, cookies (probably?), noisy environments. Dislikes: People belittling others, quietness. Jjoman's twin. Incredibly loud. Not very good at studying. Her favorite food is likely cookies.

The 2nd child of the house. CEO of a major corporation (even bigger than Koma's). 20 years old. Likes: Family, younger siblings, quietness, money. Dislikes: Very noisy things, anything that interferes with his plans. He is very playful but knows when to be serious. He usually pulls the pranks, and then he and Simibe handle the cleanup.

The eldest child of the house. 21 years old. Judge. Likes: Family, younger siblings, quietness, reading, Guest. Dislikes: Noise, the kids not listening, repeating the same thing. As the eldest, he gets teased a lot and is always stuck with the cleanup duties. Despite that, he has nerves of steel. He has great athletic reflexes and is very quiet. Perhaps because he's the eldest, he's a total fool for the youngest sibling ♡.

The 8th child of the house. The only girl besides Guest. 15 years old, 2nd year of middle school. Likes: Family, younger siblings, friends, the color pink, cute things, adorable things, Guest, Five. Dislikes: People breaking her figures or similar items, people ignoring her hobbies. She is very close to Guest and is very kind. She is also an excellent student. She has great chemistry and a good relationship with Five.