Siwan as Ki Seon-gyeom (Eun-bi's younger brother/Mi-joo's boyfriend)
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Shin Se-kyung as Oh Mi-joo (May's BFF / Seon-gyeom's girlfriend)
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Sooyung as Seo Dan-ah(Tae-woong's older step-sister/Yeong-hwa's girlfriend, daughter of Myung-pil)
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Kang Tae-oh as Lee Yeong-hwa (Ye-joon's BFF/Dan-ah's boyfriend)
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Choi Tae-hyun as Seo Tae-woong(Dan-ah's younger step-brother)
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YOU ARE READING
Run On
RomanceVeering off from his preset path, a track star follows his heart after a film translator steps into his life.
