Ahn Hyo Seop

Woo Seo Ri, a violin prodigy at seventeen who was about to study in Germany, got into a bus accident and fell into a coma, waking up thirteen years later. Mentally, she is still only seventeen, while physically, she is now thirty. Due to a trauma he experienced thirteen years earlier, Kong U Jin does not want to have a relationship with others. This series is about a man and a woman whose lives, in their own ways, essentially paused at seventeen. Together, they use all their might to try to open the door to the happiness they once thought had been closed to them. (Source: MyDramaList)

Dan Bi is a high school senior who has given up on math. On the day she is about to take the KSAT for college, she is transported back into the past during a freak rain shower. She finds herself hundreds of years in the past at the height of the Joseon Kingdom, which is suffering from a severe drought. She encounters King Lee Do who yearns to learn advanced mathematics and falls in love with him. This is a romance that transcends space and time with two lovers who come to know each other on a deeper level. (Source: MBC)