The Oni Princess of the Himemaya

The bullying is yet to cease, and so, Yuuka comes home crying one day, to be comforted by Ginka. The family express their concerns, especially after it appears Teika and Hyouka are ready to do some serious about the situation. The next day, Yuuka is confronted by a teenage girl - her biological sister, Senko, who has come to take her younger sister back. The truth regarding Yuuka's previous family is revealed - her family traditionally tortures the youngest daughter - Yuuka - for being a demon. Before the situation gets out of hand, Ginka appears, and apparently knows Senko. Night comes, and the bullies are at it again, this time aided by Senko, who is madder than ever before, claiming she needs to be saved too. Ginka's second arrival spurs this, as Senko wakes up in the Midarezaki household. Kyouka threatens to kill Senko for being an enemy of the family, but Ouka jumps in and pulls her away. After the family turn up at the Himemiya mansion, Senko offically becomes a new addition to the family - Chika Midarezaki.

凶華の作戦により、優歌に対するクラスメイトたちのいじめはなくなったように思えた。だが、彼女の身体から生傷が絶えることはなかった。そんな彼女を心配する凰火たちに対して、「私は大丈夫だから」と答える優歌。実は優歌を苦しめていたのは、彼女の本当の家族である姫宮という一族、そして姉の千子だったのだ…。