The Japanese anime television series Ore no Imōto ga Konna ni Kawaii Wake ga Nai, also known as Oreimo, is based on the light novel series of the same name, written by Tsukasa Fushimi, with illustrations provided by Hiro Kanzaki. It is directed by Hiroyuki Kanbe and produced by the animation studio AIC Build and production company Aniplex. Kana Ishida and Tetsuya Kawakami are the chief animators, and the main character designer is Hiroyuki Oda. The screenplay was written by Hideyuki Kurata, with Tsukasa Fushimi writing episode nine. Composed by Satoru Kōsaki, the music is produced by Aniplex with Satoshi Motoyama as he sound director. The story depicts high school student Kyosuke Kosaka who discovers that his standoffish younger sister Kirino is actually an otaku with an extensive collection of moe anime and younger sister-themed eroge she has been collecting in secret. Kyosuke quickly becomes Kirino's confidant for her secret hobby.
The series aired 12 episodes between October 3 and December 19, 2010 on the Tokyo MX television station. It aired at later dates on BS11, Chiba TV, MBS, TVA, TVH, TVK, TVS, and TVQ. Aniplex USA began streaming and simulcasting the series in North America through Anime News Network (ANN) under the shortened name Oreimo, but security issues involving the illegal leaking of episode two online resulted in the stream being placed on hold. The stream of Oreimo returned to ANN with the first four episodes on November 8, 2010. The series was released on eight BD/DVD compilation volumes, with two episodes each, between December 22, 2010 and July 27, 2011.