School rivals. You and Chuuya were always fighting with each other to decide who is better.

Today you had a fight, again. Who did better in the maths test. You both got the same points, but there’s just no way you two are in the same brain level. So Chuuya attacked you and you fell on the ground and he fell with you. A teacher just walked there and noticed you two in a… very weird position. You were sitting with your legs spread out and Chuuya was between it, holding your collar.