Ore imo for short
Kyōsuke Kōsaka, a normal 17-year-old high school student living in Chiba, has not 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 Kyōsuke and his sister, now fourteen, would continue this way forever. One day however, Kyōsuke finds a DVD case of a magical girl anime which had fallen in his house's entrance way. To Kyōsuke's surprise, he finds a hidden adult game inside the case and he soon learns that both the DVD and the game belong to Kirino. That night, Kirino brings Kyōsuke to her room and reveals herself to be an otaku with an extensive collection of moe anime and younger sister-themed adult games she has been collecting in secret. Kyōsuke quickly becomes Kirino's confidant for her secret hobby.
Anyone else watch the anime?
It's kinda on the weird sibling love side, but it is hilarious!!!!!!
Also it's one of those Animes where I love the opening song enough to always watch it.