Seoyeon yoo

Seoyeon Yoo is a major supporting character in Hanlim Gym. She is Youngha Jeon's PVP Manager and former member of the Yongsan Dropout Crew.

She has long beautiful blue hair that is actually quite short when untied. She has oversize glasses to give her a cute look. She has crystal blue eyes and usually wears a grey hoodie with a white t-shirt but before that, she wore a black top and blue jacket. After joining Yeongha as his manager, she tied her hair in a side way ponytail.

When she was young, she has and cherish her older sister. However, their mother abaonded them due to their alcoholic father, which he would physically abuse them. One day, her sister gifted her glasses and tablet and simutaenously suicided. The father now abuse Seoyeon but she ran away.