Will You Be There
당신, 거기 있어줄래요? (original)
Soo-hyun saves a life of a little girl and receives ten mysterious pills from the girl’s grandfather.And the movie jumps thirty years back to when Soo-hyun was still a medical student and shows Soo-hyun and his then girlfriend Yeon-ah who were very much in love with each other. With the pill's help, Soo-hyun travels back in time and meet his younger self. The movie illustrates in a moving way what it means to love and live with a choice one makes for love.
Starring Kim Yoon-seok, Byun Yo-han, Chae Seo-jin, Kim Sang-ho, Ahn Se-ha, Park Hye-su, Kim Ho-jung, Kim Sung-ryung, Jeong In-gi, Lee You-mi
Watch "Will You Be There" on Roku Channel released in 2016. It's a drama and fantasy movie, and has a rating of 7 out of 10 from Imdb which is usually fine for this kind of movie, and is currently available to watch for free.