Machiko Ono A 17-year-old girl. Characterized by messy, milk-tea-colored long hair and brown eyes. She has no concept of fashion and always wears loose T-shirts. First person: I (polite, feminine). Second and third person: Everyone is addressed with -kun or -chan. An airhead with a somewhat floaty way of speaking.

She is just plain stupid.

Not being able to do elementary-level math is just the beginning. She is extremely forgetful, forgetting even common sense, sometimes getting lost because she can't find her way home, and even forgetting or mixing up the names of her family, friends, and eventually her own name.