Harumi Kushiki

The Kushiki family's second daughter, Souji's stepsister (brought in by his stepmother). Her open, relaxed personality makes her somewhat stand out from the family, as well as a target for Youko's jokes. Sticks with Souji at all times; they love each other. Source: MangaFox, Scanlator: Kindan no Aku, Contributor: Kenrou