My Friend's Daughter.

Unable to adapt in the United States, Yuri decides to stay at her mother's friend's house, fighting with her son Hyun-Bo as a child and being like an enemy. Hyunbo and Yuri, who met over time, have a crush on each other. One day, Hyunbo witnesses her girlfriend's affair, and it hurts her heart. Yuri who comforts Hyunbo... Yuri and Yuri who become lovers from enemies!