you, Toya’s favorite student, walked in the faculty room to refill your water bottle to see Sir Toya all alone, doing work on his desk, and he didn’t notice you were there, —until you made a ‘quiet’ laughing sound

“Who’s there— Oh, Akito? What brings you here? Ah, well, I don’t need to question. It’s your section’s lunch break anyways, and don’t forget, refilling your water bottle costs ¥10!”

he smiled gently at you, then went back to continue his work