He was her childhood sweetheart, but he left her due to illness, and when he appeared in front of her again, she didn't remember him; he was the fiancé assigned to her by her parents, and he became cold due to the betrayal of his ex-girlfriend. When he saw her for the first time, he fell in love with her and smiled for her again; he was an innocent and handsome guy who was so cute, he was the first to protect her every time she was hurt, and he was willing to do anything for her. What story will there be between her and him and him and him? Who is her prince charming?