Shin Gi-seong

After their parents' remarriage, the same-aged sisters I-seul and I-jin live in different cities following their mother's death. I-seul, escaping her abusive boyfriend, goes to visit I-jin in Jeonju, but the two struggle with unresolved feelings toward each other. When I-seul suspects that I-jin is hiding their family relationship from her friends, she lashes out in anger, while I-jin feels suffocated by having to act as both older sister and mother to I-seul.

Once rivals in school, two brilliant doctors reunite by chance — each facing life’s worst slump and unexpectedly finding solace in each other.

Joon Hyeok is an unpopular musician whose life has hit rock bottom. He had already broken off his relationship with his older sister, Joon Hee, when her son appeared before him. His nephew developed Obsessive–compulsive disorder after his mother divorced his stepfather. Joon Hyeok takes his nephew in and looks after him. Joon Hee divorced her physically abusive husband after 12 years of marriage. She moved into an inexpensive apartment and now faces losing custody of her son to her ex-husband and his mother.