With dreams and ambitions and a heart ready to love, it was only a matter of time before she fell for her friend, Lee Soo.

Though the two have taken turns having a crush on each other for over ten years, misunderstandings and missed timings have continued to keep them from becoming anything more than friends.

Early working title of the series is Number of Cases Friends Become Lovers (Korean: 친구에서 연인이 되는 경우의 수; RR: Chingueseo Yeonini Dweneun Kyungwooui Soo).

[2] On February 18, 2020, news outlet Osen reported that Ong Seong-wu would play the lead role of the series.

[4] Fantagio and Npio Entertainment (Ong and Shin's respective agencies) confirmed that they were both positively reviewing the offer, but nothing had been decided yet.