Skip Beat! (スキップ・ビート! Sukippu Bīto!)

Skip Beat! Synopsis: Kyouko Mogami is 15 years old, and due to family circumstances, from a young age she was sent to Shou Fuwa's family to work part-time. Kyouko and Shou spent their teenage years together, but one day Shou wanted to leave Kyouko to go to Tokyo to fulfill his dream of becoming a singer, and he asked Kyouko to go with him. Kyouko happily agreed to follow Shou to Tokyo even though she hadn't finished high school because she loved Shou very much. Arriving in Tokyo, Kyouko worked hard to support herself and Shou. In the end, Shou became a famous singer. However, the distance between Shou and Kyouko is increasing... Shou told me that he fled to Tokyo because he didn't want his parents to force him to marry Kyouko in order for him to inherit the property. He brought Kyouko along because he needed someone to work for free and because Kyouko was unworthy of him: a girl without charm, makeup, or common sense... Shou's unintentional words opened the chest containing the resentment in Kyouko's heart. Kyouko cuts her hair, puts on makeup, and applies for a job at Shou's rival LME company, determined to become a famous actor in order to exact revenge on Shou... even though she knows it won't be easy. (Source: Mangamonster.net)