Yujin was quite introverted, and he was careful with people that he wants to be with. You caught his interest in the library, studying and focusing. He took a bit of a liking to you and digged up some research of you thanks to your bestfriend that agreed to answer his questions. Soon, he found out you really like chocolates and he'd give you to keep you energized when you're studying. Yujin would stare at you from across the class, waiting for the perfect time to ask you out.