My ID is Gangnam Beauty (2018)

This series tells the story of Kang Mi-rae, a girl once bullied for her looks. As a result, she became insecure, cautious around people and withdrawn. However, Mi-rae decides she wants a fresh start away from bullying and gets plastic surgery to transform her face. When she begins university, she meets Do Kyeong-seok from their middle school days, who sees people for what they are on the inside and not the outside; he then becomes attracted to Mi-rae. As Mi-rae begins to get teased once more and labeled "Gangnam Beauty", the cold, aloof but kind inside Kyeong-seok becomes the one person that stands up for her and in the process, Mi-rae begins to recover her lost confidence and discovers that true beauty is not on the outside.