Unnie, I like you!

Park Chanmi is a cold-looking athletics freshman who remembers her past life. In past life, she loved the beautiful girl, but couldn't confess to her because the girl was already in love with a man and her life ended early and tragically. In this life, Chanmi thinks that everything will happen again, so she wants to protect her beloved one. But now her beloved one is a teacher at the university where Chanmi is studying.