Boku ga Kimi o Kaeru

Nako is a shy and introverted high school girl, but her boyfriend is a fresh and handsome guy who is popular among the students in her grade. Nako is humiliated by the negative comments she hears around her, but for some reason, Shinobu Midou, one of the "Midou Brothers" known for their beauty, decides to give her a makeover. https://www.cmoa.jp/title/154626/