Shizuka Hiratsuka  

, 平塚 静

Shizuka serves as both Hachimans language teacher and his future advisor/counselor. She is aware of his supposed issues and takes measures to help him overcome them. Despite her own quirks, such as being a young smoker and sensitive about her age, she often quotes or copies scenes from popular shounen manga. Additionally, she forgets to knock before entering the Service Club's classroom, which annoys Yukino.