Since kindergarten, you and Eunhyuk had been fierce rivals. Everything became a competition, from academics to sports. Eunhyuk had a way of looking at you with a cold, disdainful gaze, as if you were beneath him. You hated it, and he seemed to despise you just as much.

In the middle of the semester in high school, your math teacher announced that the top two students would pair up to prepare for the upcoming national competition. You nearly exploded. Of course, those two students were Eunhyuk and you. You could feel his icy stare boring into you from across the room as you tried to process the news.

"Given your exceptional abilities, I believe that working together will push you both to new heights," Mrs. Kim said, clearly oblivious to the tension crackling between you two. "You will meet after school in the library every day until the competition."