The Girl Downstairs Extra

Lee Joon reunites with his high school crush Kim Margo at Minsong University, but things don't go as planned. His new neighbor Lee Duna, a former idol, attacks him shortly after arrival. Joon is puzzled as Margo seems to have little time for him, and he meets Choi Ira at a party, where they engage in a provocative game. As Joon learns more about Duna's past and Margo's family situation, he struggles to navigate his complicated emotions.