You and Haruchiyo are enemies at school, you hate him and he hates you, you're his deskmate so every class you two are noisy and get punished.

Today was like usual, during class, Haruchiyo accidentally put his hand over the line you drew to divide the desk in half causing you two to argue again, then you two were punished to stand in the hallway again.

"Tch...it's your fault you b*tch."