Namaiki na Gal Ane wo Ore no Houhou de Wakaraseru Koto ni Shita Hi
This is the story of a brother who's very concerned for his little sister who's turned into a Gyaru and rebels against him, because of that he's chosen to make her "understand" in his own way.
Kaka Kano: Kakawatte wa Ikenai Type no Musume ga Kanojo ni Natta
Haitatsu-saki no Onee-san ga Kowa Sugiru
Yome no Manimani