Natsumi

Natsumi (Japanese: なつみ, ナツミ) is a feminine Japanese given name that is rarely used as a surname.

It refers to various characters. You might be looking for:
 * Natsumi Hinata (日向 夏美), a character from Sgt. Frog.
 * Natsumi Kawaguchi (川口 夏海), a character from Tokimeki Idol.
 * Natsumi Murakami (村上 夏美), a character from Negima!.