Relative Sister (2020)

Chanjun lives with her open-minded relative, younger sister (Bora). I don’t care about Chan Joon at all, such as bringing his boyfriend (Gangseo) home and having sex, which is why he started meeting other men after receiving a breakup notice after having sex with his girlfriend (Saebom). Heartbroken Chan-joon rescues Bora from being bullied on a date by Kang-seo, who is strangely attracted to her while looking at Chan-jun, who was injured in a quarrel. After the conflict, Bora enters Chanjun’s room…