Suho and Hyeonseo, who once dated for six years, meet again as a young CEO and a piano instructor.
Suho and Hyeonseo begin a tense first lesson; K tries to recruit Hyeonseo as a collaborator.
Suho, Hyeonseo and K live together and work on their music.
Suho and Hyeonseo talk about their breakup for the first time, and things become awkward.
Suho and Hyeonseo wake up together, leaving Suho confused about their relationship.
Suho and Hyeonseo start dating again, but it is not all roses for the new couple.
Keum Sae-rok
Doh Hyeon-seo
Steve Sanghyun Noh
Ji Su-ho
Son Junghyuk
K
Kwon Seung-woo
Hong Chang-sik
Jeon Hye-jin
Kim Jin-kyung
