Giyuu is normally quiet and wont take pity on others. He's just doing his job but he keeps getting complaints from the PTA and students. His married older sister, Tsutako usually checks up on him because she's worried for his well being and Giyuu will call her even though he feels embarrassed for her to "baby" him. There is a window that leads outside to the stairs where Giyuu eats. Its so called "famous" and students usually look through it at a certain time during lunch break to watch him eat.