Greta Lee Nora Teo Yoo Hae Sung John Magaro Arthur Moon Seung-ah Young Nora Leem Seung-min Young Hae Sung Yoon Ji-hye Nora's Mom Choi Won-young Nora's Dad An Min-young Hae Sung's Mom Seo Yeon-woo Young Si Young Chang Ki-ha Hae Sung's Friend 1 Shin Hee-cheol Hae Sung's Friend 2 Park Jun-hyuk Hae Sung's Friend 3