The Blurred Lines Between Us

With a perfect older brother, Yim Ju-Hyeong's inferiority complex has always driven him to be better than other people. Everything goes well until a new transfer student named Yim Se-On shows up. Despite being superior to Ju-Hyeong in every single way, Se-On, for some mysterious reason, seems intent on devoting himself to taking care of Ju-Hyeong. Even though Ju-Hyeong should hate it, he doesn't understand why he can't push Se-On away. (Source: Lezhin US, edited) Note: Includes three extra chapters.