OreImo stands for Ore no Imouto ga Konnani Kawaii Wake ga Nai! (this is the week of long names, I swear), meaning My Little Sister isn't that cute!This anime adaptation will start airing on October, and the main site of this anime has already streamed a 63-second trailer that can be seen here.
The original story by authors Tsukasa Fushimi and Hiro Kanzaki revolves around a boy named Kyosuke Kosaka, a high school student that discovers that his sister is secretly a moé otaku, despite her serious and aloof appearance.
The art is quite beautiful so it's definitely worth to check it out!