Ko Gyeong-tae's mother. Her husband has passed away. As a single parent in a household that isn't well-off, she works for a cleaning company. She cherishes Gyeong-tae dearly.

A 19-year-old high school senior who forces Ko Gyeong-tae to be his 'bread shuttle.' He hits him often but secretly looks out for him behind the scenes. He loves peanut cream bread.

A 19-year-old high school senior and a member of Yoo Byeong-gu's clique. He makes Ko Gyeong-tae run errands for chocolate milk. Even so, he secretly looks out for him.

The homeroom teacher, usually called Mr. Lee. He is kind and has Gyeong-tae run errands for coffee.

A 19-year-old high school senior and close friends with Lee Ji-yeon. She is a good student and kind-hearted. She likes cookies.

A 19-year-old high school senior and close friends with Sae Na-rin. She likes macarons and is kind-hearted.

A 19-year-old high school senior and a foreigner. He is very good at soccer. He usually doesn't speak and communicates by writing on a handheld sign.

A 19-year-old high school senior whose father runs a fried chicken shop. He is kind-hearted.

Ko Gyeong-tae's dog. In reality, it's not a dog but a koala, but they just treat it like a dog. It loves snacks.