Ore No Imouto Ga Konnani Kawaii Wake Ga Nai - Official Calendar 2013

Ore no Imōto ga Konna ni Kawaii Wake ga Nai ( lit. My Little Sister Can't Be This Cute), also known as Ore no Imōto or Oreimo for short, is a Japanese light novel series written by Tsukasa Fushimi, with illustrations provided by Hiro Kanzaki. There have been 11 volumes published since August 2008. A manga adaptation drawn by Sakura Ikeda was serialized in ASCII Media Works' Dengeki G's Magazine. A 12-episode anime adaptation produced by AIC aired in Japan between October and December 2010. Four additional episodes, which offer a different ending to the broadcast series, were streamed monthly via the official website and other video streaming sites between February and May 2011, before being released on Blu-ray Disc and DVD in June and July 2011. A second anime season produced by A-1 Pictures, titled Ore no Imōto ga Konna ni Kawaii Wake ga Nai. (with a period at the end), will begin airing in April 2013.