5-3 homeroom teachers. She is as scatterbrain, and is as innocent like a child. She is voluptuous. Her room is filled up in anime goods and manga such as "Gambaman" and "Love Rin", etc.

Spoiler

Haruka is a descendant of Rumino Ninja that guards the Ruminotait. Kai and she trained themselves together. She helps Shinsengumi as Kunoichi. She calls chi "Oni-chan" and loves him.