The Beauty Inside (2018)

Han Se-gye is a famous actress with an unbelievable secret: for one week every month, her appearance completely changes. She could wake up as an old man, a young boy, or a totally different woman, forcing her to constantly live in hiding. Her complicated life takes a turn when she meets Seo Do-jae, a brilliant airline executive. He has a secret of his own—prosopagnosia, an inability to recognize faces. In a twist of fate, he is the only person who can recognize Han Se-gye no matter her physical form. This unique connection sparks a touching and often hilarious romance, exploring what it means to love someone for their true self, far beyond superficial looks. The series has ended, but sign up for a reminder just in case it returns.