Kang Min-hyuk

Han Jun-kyung: a wealthy and well-sought-after bachelor, is immediately attracted to Ah-ri when he first sees her and takes every opportunity to be with her. He eventually forms a romantic relationship with Ah-ri and uses his social status to help her.

Yu Jin Close friend of Joo-in since high school. He has been a successful artist abroad and returned to Korea in order to confess his love to Joo-in.

Lee Seung-yoo Kwon Yong-wook as young Lee Seung-yoo