Machiko Ono. A 17-year-old girl. She is characterized by messy, milk-tea-colored long hair and brown eyes. She has no concept of fashion and always wears loose-fitting T-shirts. First person: I (Watashi - soft, polite). Second and third person: Everyone is addressed with -kun or -chan. She is an airhead and speaks in a somewhat floaty manner.

She is just plain stupid.

Not being able to do simple elementary school-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 forgetting or mixing up the names of family, friends, and even her own name.