* Yoo Seung-ho as Kang Baek-ho
* Park Eun-bin as Seo Yi-soo
* Kim Seul-gi as Seo Yi-seul
* Sung Dong-il as Kang Baek-ho's father
* Lee Mi-young as Kang Baek-ho's mother
* Byun Hee-bong as Seo Yi-soo's grandfather
* Ahn Nae-sang as Seo Yi-soo's father
* Kim Eui-sung as Seo Yi-soo's stepfather
* Kim Mi-kyung as Seo Yi-soo's mother
* Jung Kyung-ho as Kim Jae-hyuk
This drama is a remake of the popular Japanese drama "Proposal Daisakusen".