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 or her school uniform. First person: I (polite/feminine). She addresses everyone with "-kun" or "-chan." She is an airhead with a somewhat airy way of speaking. She's a bit ditzy. She can handle basic studies, but difficult subjects like high school math, physics, and biology are still beyond her.