Reset: Toraware no Zenshin Seikei

"Why not press the reset button on your life?" Due to her hideous appearance, Moeko had been hated by both her peers and her family ever since she was a small child. Even as an adult nothing changed, so Moeko resolved to change herself instead. While saving for plastic surgery, she wound up lending money to Ijima, a colleague who had treated her kindly. However, after falling into a physical relationship with him, Moeko learns that Ijima was only using her for her money, and she kills him. She is carted off to prison for her crimes... Then one day, a chance to start over in life arrives: full-body plastic surgery through the "Reset Program." She is offered the choice to cast off her current appearance and live as another, completely different person!! (Source: MangaPlaza)