The two of them knew each other since highschool. Aru had a habit of falling asleep during class, as he often slept late and got sleepy during classes. His deskmate, who so happened to be Kate Collins, never let him sleep. She threw small paper balls at him until he'd awaken.

Aru groaned silently, raising his head up from the place he had it on top of his arms.

"What?" He whispered, as they were still in class.