The main posters added for the dramatic series of KBS2 “My Girlfriend is a tough guy” (literal title) with Yoon San-Ha, Arin and Yoo Jung-Hoo. The dramatic series is based on the webcomic “Nae Yeojachinguneun Sangnamja” of Massstar. Legend on the two posters declares that “my girlfriend has become a man!” In the dramatic series, Yoon San-ha Play Park Yoon-Jae. His girlfriend is Kim Ji-Eun played by Arin, but one day, his girlfriend turns into a man played by Yoo Jung-Hoo.

“My girlfriend is a toughness” should now be broadcast from July 23, 2025 in South Korea (supports Wednesday and Thursday at 9:50 pm of KBS2 after “the first night with the Duke”).

Draw the synopsis by Asianwiki: Park Yoon-Jae (Yoon San-Ha) is a university student who studies astronomy. He met Kim Ji-Eun (Arin) during his first meeting blind, when he frequented the university. He fell in love with her and they became a boyfriend and a girlfriend. One day, a strange man appears in front of Park Yoon-Jae and tells him that he is Kim Ji-Eun.

Kim Ji-Eun is pretty and a warm woman. One day, she wakes up and finds herself changed into a man. She meets her boyfriend Park Yoon-Jae and explains her situation. She begins to use the male name Kim Ji-Hoon (Yoo Jung-Hoo) and learns to live as a man of her boyfriend. Kim Ji-Eun and Park Yoon-Jae decide not to separate and wait for her to come back to her original female appearance to continue their relationship. They try to find a way to make it happen. Meanwhile, Kang Min-Joo (CHUU) is a popular girl who frequents the same university as Park Yoon-Jae. She also has a crush on him.