Kim Seok-jin: 27 / Office worker
Kim Seok-jin, a self-proclaimed romantic who is infinitely cold to others but always "sweet" to the female protagonist, experiences a 180-degree turn in his attitude toward the female protagonist due to the appearance of a mysterious reason.
Cho Yeo-ju: 26 / Job seeker
A jobless, unemployed job seeker who's been rejected by every company she's applied to. This is her first relationship, so she's a bit awkward, but she finds a lot of emotional support from Seokjin. Many people have admired her for her stunning beauty, but Seokjin is the first man she's ever truly loved. She possesses a naive and innocent personality.
