An anime adaptation of Tsukasa Fushimi's Ore no Imouto ga Konnani Kawaii Wake ga Nai comedy light novel series has been green-lit. The story follows the daily life of an ordinary high school boy named Kyōsuke Kōsaka. Kyōsuke's younger sister Kirino is a pretty fashion model — but also a secret Otaku of adult games. Kyōsuke is the only person to whom Kirino reveals her hidden obsession and other issues.

Fushimi has been writing the light novel volumes since 2008, and Hiro Kanzaki illustrates them. The first five volumes have sold 920,000 copies, and the sixth volume is shipping on May 10. Sakura Ikeda has been drawing a manga adaptation in ASCII Media Works' Dengeki G's magazine since 2009, and the first manga volume shipped last October.

Atsuhiro Iwakami (Kara no Kyoukai - the Garden of sinners, Kannagi, Cencoroll) is producing the anime at Aniplex with publicity producer Yūma Takahashi. The back of the wraparound jacket band on the sixth light novel volume will announce the director, scriptwriter, and animation production studio of the anime.

Kyosuke Kosaka, a normal seventeen-year-old high school student, hasn't gotten along with his younger sister, Kirino, in years. For longer than he can remember, Kirino has ignored his comings and goings and looked at him with spurning eyes. It seemed as if the relationship between Kyosuke and his sister, now fourteen, would continue this way forever. One day, however, Kyosuke finds a DVD case of a magical girl anime entitled Hoshikuzu Witch Meruru (Stardust Witch Meruru), which had fallen into the entranceway of his house. To Kyosuke's surprise, inside the case, an adult video game entitled Imoto to Koishiyo! (Love with Little Sister!) is hidden.