Kochō has butt-length darker pink hair (lighter pink hair in the anime) that has bangs swept to the right side with three braids; one on the right side, a medium-length braid hanging on the right side of her shoulder, and one tied in the back, golden eyes (olive eyes in the manga) and very large breasts that surpass Minori Nakazawa's breast size.
Kochō is an adult-acting student who acts proud of herself. She has such a high esteem for herself that she calls everyone vulgarians. She is also sensitive about her breasts and hates when people call her nicknames that poke fun at them, such as "Funbags Mcgee."
- Main article: Kochō Yoshida/Relationships
- The name Kochō means "barbarian, foreign" (胡) (ko) and "butterfly" (蝶) (chō).
- Kochō's surname Yoshida means "good, virtuous, respectable" (良) (yoshi) and "field, rice paddy" (田) (ta/da).
- Kochō majors in animal husbandry.
- Kochō's title "Boin Yoshida" often leads to Kōsaku Hata calling her "Boobies" aside from the fact that she has a large bust size.