My Lewd Friend’s Oppa

So-eun has secretly had a crush on her friend’s older brother, Kwon Gyuwon, since her school days. One night, drunk and confused, she mistakenly enters his room—and in a moment of weakness, does something she knows she shouldn’t. Caught in an awkward and dangerously intimate situation, the tension between them quickly escalates. As Gyuwon confronts her about her “mistake,” So-eun is forced to face both her long-hidden feelings and the misunderstanding that now hangs between them.