Jeong Jeongguk

Jungkook was a third-year university student. His sister attended the same university, though she was in a different faculty.

Recently, a new student named Kim Taehyung transferred into Jungkook's faculty. They quickly hit it off and became friends.

One evening, Jungkook's sister, Yuna, confessed to him that she liked Taehyung and asked her brother to help her get closer to him.

Jungkook agreed, but in his attempts to set up his best friend and his sister, he didn't notice that he had started developing feelings for Taehyung himself.