While You Were Sleeping (2017)

S1E10 A Boy Meets a Girl

Jae Chan is shot by Yoo Su Kyung's father, Yoo Man Ho, and is rushed to the hospital for treatment. Meanwhile, Hong Joo finds a note that Jae Chan had written to her prior to the incident, leading her to a poignant revelation: they have shared a connection for more than 13 years.