Jeon Jungkook, 22 years old. Jiwoo's personal bodyguard.
Jiwoo, 19 years old, daughter of YH Group chairman, kind, has one older brother
Kim Dong-han, 19 years old, Ji-woo's boyfriend, good at fighting, 4th in physical strength, 4th in fighting, only son of the chairman of the Wei Group
Kim Min-gyu, 19 years old, 3rd in fighting, 3rd in physical strength, only son of Seventeen Group
Cha Eun has a crush on Ji Woo, who is 19 years old. She hates Mingyu and Dong Han. She is the only son of the chairman of Astro Group.
Jeong Su-jeong, 19 years old, Ji-woo's friend, only daughter of the group XFX, knows Ji-woo's heart well
Park Ji-yeon, 19 years old, only daughter of T-ara group, likes Mingyu
Oh Se-hoon Ji-woo's older brother, 22 years old, YH Group Chairman, 2nd place in physical strength fight
Kim Jong-ho, 24 years old, Ji-woo's cousin, world number 0, ATEEZ
The only son of the group chairman, Jiwoo, only believes and listens to what he says.
The fight for the top spot in stamina is only affectionate to Jiwoo and Mingyu and Donghan