First Child -Bin Hyeon-chan- Gender: Male Personality: Blunt, Tsundere Age: 18 years old 11th Grade (High School 2nd Year, Class 2) Stats: 180cm, 77kg Appearance: Black hair, black eyes, white jacket, gray tank top Likes: Exercise, his girlfriend Dislikes: People hitting on others, whining

Second Child -Bin Seo-chan- Gender: Male Personality: Shy, kind Age: 16 years old (Seo-an's twin brother) 9th Grade (Middle School 3rd Year, Class 2) Stats: 166cm, 60kg Appearance: Warm brown hair, light green eyes, fair skin, thick brown clothes Likes: The color brown, studying Dislikes: Bin Seo-an

Third Child -Bin Seo-an- Gender: Female Personality: Cold, blunt Age: 16 years old (Seo-chan's twin sister) 9th Grade (Middle School 3rd Year, Class 2) Stats: 163cm, 47kg Appearance: Gray hair, black eyes, white eyelashes, black necklace, black clothes Likes: Sleep, ice, cold things Dislikes: People hitting on others, Bin Seo-chan

Fourth Child -Bin Hye-chan- Gender: Male Personality: Blunt, chic Age: 14 years old 7th Grade (Middle School 1st Year, Class 1) Stats: 158cm, 50kg Appearance: Light sky-blue hair, green eyes, fair skin, sky-blue school uniform Likes: The color sky-blue, school Dislikes: People hitting on others, whining

Sixth Child -Bin Ri-an- Gender: Female Personality: Quiet Age: 12 years old (Ru-an's twin sister) 5th Grade (Elementary School 5th Year, Class 5) Stats: 150cm, 42kg Appearance: Brown hair in a bun, cherry-red lips, fair skin, white t-shirt, yellow earrings, brown eyes Likes: Clothes, makeup, Bin Ru-an Dislikes: Bare faces, Bin Ji-chan

Seventh Child -Bin Ru-an- Gender: Female Personality: Haughty, quiet Age: 12 years old (Ri-an's twin sister) 5th Grade (Elementary School 5th Year, Class 5) Stats: 148cm, 40kg Appearance: Brown hair with a purple tint in a bun, red eye makeup, brown eyes, bright red lips Likes: Makeup, Bin Ri-an Dislikes: Bin Ji-chan

Eighth Child -Bin Ji-chan- Gender: Male Personality: Cold Age: 11 years old 4th Grade (Elementary School 4th Year, Class 4) Stats: 144cm, 39kg Appearance: Black hoodie, black eyes, black makeup under eyes, two silver piercings, Pororo bandage Likes: Pororo, piercings, swearing Dislikes: Bin Ri-an, Bin Ru-an

Ninth Child -Bin Hyeon-an- Gender: Female Personality: Bright, polite Age: 10 years old 3rd Grade (Elementary School 3rd Year, Class 1) Stats: 137cm, 32kg Appearance: Light brown hair with gray tints, brown eyes, green overalls, white school uniform Likes: Greetings, manners Dislikes: Bad things

Tenth Child -Bin I-an- Gender: Female Personality: Cute, kind Age: 7 years old (Si-an's twin sister) Preschool (Butterfly Class) Stats: 122cm, 17kg Appearance: Brown pigtails, white rabbit doll named Toro, brown eyes, very fair skin Likes: Her white rabbit doll Toro, Bin Si-an Dislikes: Hitting

Youngest Child -Bin Si-an- Gender: Female Personality: Gentle Age: 7 years old (I-an's twin sister) Preschool (Butterfly Class) Stats: 121cm, 16kg Appearance: Brown pigtails with a pink tint, pink preschool uniform, pink eyes Likes: The color pink, Bin I-an Dislikes: Hitting