Oreimo

Oreimo (俺妹?), short for Ore no Imōto ga Konna ni Kawaii Wake ga Nai (俺の妹がこんなに可愛いわけがない?, lit. My Little Sister Can't Be This Cute)[1][2] and also known as Ore no Imōto (俺の妹?), is a Japanese light novel series written by Tsukasa Fushimi, with illustrations provided by Hiro Kanzaki. The series includes 12 novels released between August 2008 and June 2013. 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 13-episode 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), aired between April and June 2013. An additional three episodes were streamed online on August 18, 2013.