- Original title : 내 여자친구는 상남자
- Director: Yoo Kwan Mo
- Broadcast: July 23 to August 28, 2025
- Broadcaster: KBS 2
- Number of episodes: 12
- Cast: A-rin, Sanha, Chuu, Yoo Jung-hoo, Kim Kwang-shik, Jo-eun Sook
Park Yun-jae is an astronomy student at university. On his first blind date, he meets Kim Ji-eun. They quickly fall in love and become a couple. However, one day, a strange man appears in front of Yun Jae and reveals that he is in fact Kim Ji-eun.
One day, she wakes up to find she's been transformed into a man. Shocked, she explains the situation to her boyfriend, Park Yun-jae, and takes the name Kim Ji-hun. Thanks to Yun Jae, she learns to live as a man. Together, they decide to stay together, hoping that one day Ji Eun will regain her feminine appearance and resume their relationship as before. They look for a way to reverse this transformation.
Meanwhile, Kang Min-ju, another popular university student, develops feelings for Yun Jae.
