JOY

- Park Sooyoung
- Eun San's bestfriend.
- Very extrovert and outgoing.
- Very supportive towards San and love her so much.

YERI

- Eun Yerim
- Eun San's little sister.
- Love-hate relationship with her sister.
- Savage af.

SEUNGYOUN

- Cho Seungyoun
- Funny even a flower could laugh at his jokes.
- Caring and lovable.
- A semester repeater, that's why he was in the same class as San and Joy for some classes.

WOOSEOK

- Kim Wooseok
- A high-level narcissist.
- Injeong himself as a prince.
- He looks cold but he is very warm once you get to know him. 
- He decided to pursue his study late. 
- San's and Joy's classmate.

JUNGMO

- Koo Jungmo
- Seungwoo's vey close no bloodties younger brother.
- Can be savage all the time, at most when people disturb when he is resting/sleep.
- Is ready to fight anyone who hurt his people.

SUNHWA & JONGSUK

- Han Sunhwa [Seungwoo's older sister]
- A 10/10 airhead.
- Annoying little but love Seungwoo infinitely.

- Lee Jongsuk [Sunhwa's girlfriend]
- Always worry for Seungwoo well-being.
- Love Seungwoo just like his own little brother.

JIEUN & JIYEON

- Refer themselves as Doba J.
- Seungwoo's bestest friends since elementary school.
- Give full support for Seungwoo in whatever he does.