Age: 23 Gender: Male Appearance: Black hair, red eyes, eye patch Traits: The eldest. Having recently finished military service, he goes absolutely ballistic if he hears a wake-up bugle. He was attending university but is currently on leave to run a YouTube channel. He is always kind to his younger siblings and uses polite speech, acting as a sort of leader. He always uses honorifics (except when swearing).

Age: 22 Gender: Female Appearance: Pink hair, red eyes, glasses, and a mask (specifically, something close to a gas mask) Traits: The second eldest. An art student dreaming of becoming an illustrator. She is quiet and hates noise. She acts as the mediator in the house. She rarely swears, but does so occasionally.

Age: 22 Gender: Male Appearance: Black hair, red eyes, radiation-symbol hairpins Traits: The third eldest. Dreams of being a rapper and attends a music college. He is just as immature as Lee Ha-yan. He is terrible at games. A high-tension social butterfly who plays a lot of pranks.

Age: 21 Gender: Female Appearance: Light purple hair and eyes, long hair, Basquiat crown Traits: The fourth eldest. The family's number one expert in dirty jokes. She swears without hesitation. Her personality is particularly similar to Nangman Sugarak. She recently returned from the US. A long time ago, she was an idol under the name 'Abune Chie'.

Shortened to Nangsun Age: 20 Gender: Female Appearance: Pink hair, gray eyes, long hair, spoon-shaped hairpin Traits: The fifth eldest. Introverted, but once she gets close, she swears like a sailor and pranks people often. She is very lazy, which has left her with no future plans or college education. Despite her rough language, she has a good heart. She calls Ugo and Hayate by their names instead of 'Oppa' (though she calls Epkkong and Wiheomi 'Unnie').

Age: 18 Gender: Female Appearance: Blue hair, pink eyes Traits: The seventh child. A quiet, invisible model student at school, but at home, she swears a bit and has high energy. She is extremely shy. She loves music and anime, so she is preparing for art or music college. A timid tsundere. Because she is cute, local boys confess to her frequently.

Age: 16 Gender: Male Appearance: White hair, yellow eyes, red earrings Traits: The eighth and youngest child. Oblivious and pure. An immature 'elementary-school-brained' kid (though he's actually in middle school...). More than half of his actions are thoughtless, but he is surprisingly smart (though he's the worst at studying...).