The present-day father of Ha Eun-gyeol, who is deaf and mute. He initially expresses disappointment over his son's music ambitions, leading to a family conflict. His past self in 1995 is revealed to be Yi-chan, who survives a fatal car accident due to Eun-gyeol's interventions and ultimately continues his musical journey despite his hearing loss.
Nora's father is one of Nora's parents during her childhood in Seoul. He belongs to the family that immigrates to Canada and is part of the parental context surrounding Nora's playdate with Hae Sung, though the available plot summary gives him no separate actions or scenes.
The devoted father of Yun Ju-won and the owner of a Kalguksu restaurant. Alongside Kim Dae-uk, he provides a warm and nurturing home for the trio, raising them as his own family despite their lack of blood relation. His steadfast care and joyful environment shape the children's upbringing and the foundation of their bond.
Sun-joo's fiancé, Ji-hoon is busy with work while they discuss their wedding and the possibility of having children. He objects to Sun-joo's meetings with So-ra and feels she is interfering with his work; Sun-joo accuses him of lying and rejects his explanations. He later travels with Sun-joo and Jung-eun.
Choi Won-young has 36 screen credits in a career dating back to 2002. Their work is anchored in the Sex is Zero Series universe with 1 titles. Signature works include Twinkling Watermelon, Family by Choice, Past Lives. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.
