Osananajimi no Ijou Kawaii Imouto-chan summary: You are reading Osananajimi no Ijou Kawaii Imouto-chan manga, one of the most popular manga covering in Comedy, School life genres, written by Fuyujima Kure at MangaBuddy, a top manga site to offering for free. Osananajimi no Ijou Kawaii Imouto-chan has 14 translated chapters and translations of other chapters are in progress. Lets enjoy. If you want to get the updates about latest chapters, lets create an account and add Osananajimi no Ijou Kawaii Imouto-chan to your bookmark. Yanagi, a second-year high school student, has a faint crush on Mizuki, the younger sister of her childhood friend Momo.One day, while rummaging through Mizuki's personal belongings in her room, Yanagi discovers the truth about Mizuki...?