Ты лучшая, Ли Сун-щин! 1 сезон

Lee Sun Sin goes through hardships after her father's death. Sun Sin and her mother struggle to find happiness. Her love story continues in the midst of the ups and downs of her life. Lee Sun Sin is the youngest member of a successful family. Despite her family′s successes, however, she seems to have failed to inherit any talent, and is marked as an oddball, though she remains a bright, lively and courageous girl. She then meets the head of an agency named Sin Jun Ho, and he turns her life around. Sin Jun Ho is a confident, cold and competitive man, who changes later after he begins to understand the real meaning of success through Lee Sun Sin. (Source: MyDramaList)