"Do you remember? Your first love."
Through the course of their lives, a man and his first love are repeatedly separated from each other because of circumstances out of their control.
Hwan Seung-hee

Hwang Woo-yeon

Ok Geun-nam

Gu Kong-ja

Choi Soo-pyo

Lee Taek-gi

Park Min-kyung

Seung-hee's Mother

Woo-yeon's Father

So-jung

Yoon-geun

Woo-yeon's Mother

Mr. Bae

Ms. Min

Boarding Student

Taek-gi's Subordinate

Seung-hee's Partner

Student

Detective

Police Station Detective Squad Chief
