Sakurazaka Hazuki♀

Hazuki is the head maid of the Nogizaka family. She is mainly in charge of looking after Haruka and Mika, particularly Haruka; Hazuki acts in the way of an older sister towards her. She is generally very reserved and expressionless, but sometimes speaks of bombshell announcements. Hazuki adores cute things and even has a collection of stuffed animals. She often appears out of nowhere holding a chainsaw, her preferred defensive weapon.

[Taken from Wikipedia]