Younger Sisters Girl

SangWoos house Byeongjin the younger brother of the family is about to live for a month Wanjin pretends to see SangWoos lover Jinju Sangwoo finds out that they are dating for a while and Sangwoo is complicated The difference is Sangwoo asking Jinju about her relationship with Wanjin Her younger brother Wanjin doesnt even know Sangwoos situation and even invites girlfriend Seolyoung to Sangwoos house While Wanjin goes out Sangwoo twists Seolyoung with revenge on Wanjin It does not come in While Sangwoo and Seolyoung are getting deeper between them Jinju is coming home to reconcile with Sangwoo So who will she choose between her girlfriend Jinju and her sister Seolyoung