Tomorrow, With You (2017) [Nae-il Geudaewa] is a South Korean fantasy, romance television series starring Lee Je-hoon and Shin Min-a. It aired on on cable channel tvN from February 3, 2017 through March 25, 2017.
In Tomorrow, With You, Yoo So Joon (Lee Je-hoon) is the successful CEO of a real estate company who has the ability to travel through time using the subway. While traveling back and forth in time he discovers that his future self is living a miserable life. To try to offset his doomed future, he decides to marry Song Ma Rin (Shin Min-a), a quirky, yet cheery, photographer, even though he does not love her. He discovers numerous tragic events that will take place around him and he does everything he can to change those situations for the people he cares about, but it seems that everything he does only makes things worse. He finally tells Ma Rin about his ability, but things are out of control and leaving her seems to be the only way to protect her. The only problem is, he has grown to love her and he miserably tries to break up with her so they will not meet their intended fate.