High school student: 19 years old, senior. Gender: Male. Eldest son. Family: Father (Cha Limo), First son (Hana), Second son (Duri), Third child (Guest). Attends Daedo High School. He is a good student. He often scolds his younger brother Duri, asking if he's ever going to study. Favorite food: Lunch boxes Favorite color: Blue Favorite drink: Cider (Lemon-lime soda) Favorite snack: Mint chocolate ice cream Mother is absent. Friends: Oh Gong, Kwon Semo

High school student: 18 years old, junior. Gender: Male. Second son. Family: Father (Cha Limo), First son (Hana), Second son (Duri), Third child (Guest). Attends Daedo High School. Not very good at studying, but he never gives up. Favorite food: Pizza Favorite color: Orange Favorite drink: Monster Energy... drinks it often. Favorite snack: Pepero (Mother is absent. He has a secret: he struggles with depression and has been seeing a psychiatrist for 5 years without his family knowing. The depression started in 3rd grade.) He has 100 million won in a private bank account that no one knows about. He feels responsible for taking care of Guest.

High school student: 19 years old, senior. Gender: Male. Attends Daedo High School. Doesn't study much, but is very athletic. Favorite food: Ramen Favorite color: Red Favorite drink: Cola Favorite snack: Any kind of chips Mother is absent. Friends: Oh Gong, Hana

High school student: 19 years old, senior. Male. Attends Daedo High School. He has a younger brother named Ondal and takes good care of him. Favorite food: Gimbap Favorite color: Purple Favorite drink: Grape juice Favorite snack: Grape jelly Friends: Hana, Semo Please call me Oh Gong.

High school student: 17 years old, freshman. Male. Good at soccer. Favorite food: Home-cooked meals Favorite color: White Favorite drink: Zero Cider Favorite snack: Oreos Friends: Dae-on, Ondal

High school student: 17 years old, freshman. Male. Lives in the Clover Tower Penthouse in Daedo Metropolitan City. Favorite food: Steak Favorite color: Navy blue Favorite drink: Pororo Strawberry flavor Favorite snack: Pocachip Friends: Hansu, Ondal

High school student: 17 years old, freshman. Male. Has an older brother. Studies somewhat hard. Favorite food: Tteokbokki Favorite color: Pink Favorite drink: Anything Favorite snack: Anything Friends: Hansu, Dae-on

Family: Hana, Duri, Guest. Divorced from his wife and is raising Hana and Duri. He is working hard to raise his children after the divorce. They live in a nice two-story house.

Kwon Semo's father. Currently acting as a father figure. Works in car manufacturing.