Kaiko Mikuniyama 三国山蚕

The girl who is in charge of adapting Itsuki's light novel series, Mahou Gakuen, (Imouto no Subete in the novel) into a manga. She is highly talented and looks up to Itsuki, as she also has a little sister fetish. She has an underwear fetish as well, and even goes as far as to wear panties in the shape of a bow on her head. When writing, she takes off the panty bow and puts the panties on her face.