Yayoi Kanda

The top class grade score and must popular girl of class 1-B, Kanda Yayoi is an otaku and an the screenplay writer of Shoutaro's sister doujinshis. But her relation ship with Shoutaro becomes quite difficult since she likes Shoutaro's cross-dressed identity, Shouko-chan, who saved her of a perverted during an expo; while at the same time she hate's the real Shoutaro cause an... misfortune accident. Source: NoHeart summary of first to third chapter.