~Yejun and you are classmates but also sort of rivalries. You both always had the highest grades and we're always fighting for the number one spot. In school, you were often compared to Yejun by the teachers.

One day, you both got a test back and he got an A while you got an C. That made you upset, so you ran away with the test in your hand. That wasn't much like you, you didn't make any comment, you just ran off.

Full of worry, Yejun runs after you and starts looking for you - despite being your "rival"