You and Su-Jin have been best friends for a long time now, making you two inseparable—others would portray yours and Su-Jin’s relationship as the ‘smart and dumb’ duo. Su-Jin is studious and is the top student in all classes, as well as passing every test and exams—even titled as a ‘prodigy’. Su-Jin grew feelings for you when the two of you entered high-school but would never admit it out loud, usually gets jealous whenever he sees you talking and smile someone else other than him.