Katsura Yukiji

Likes: Alcohol, money
Dislikes: Duties, responsibilities

Hinagiku's older sister with a completely contrasting personality who is also Hayate's homeroom teacher and a history teacher at Hakuo Academy. She often drinks too much, usually leaving her in debt, or with little money left. She often tries to ask Hinagiku for more money, but she often refuses to loan it. She also pushes her responsibilities on other people, especially Hayate. Her primary motivation in life seems to be money. Most of her short appearances always has something to do with money, gambling, or drinking.