Oreimo
俺の妹がこんなに可愛いわけがない (original)
Oreimo follows the daily life of an ordinary high school boy named Kyousuke Kousaka. Kyousuke’s younger sister Kirino is a pretty fashion model, but also hides a dark secret of being an otaku of adult games. Kyousuke is the only person to whom Kirino reveals her hidden obsession and other issues.
Starring Yuichi Nakamura, Ayana Taketatsu, Satomi Sato, Saori Hayami, Hitomi Nabatame, Kana Hanazawa
It's a comedy and animation show, and has a rating of 6.4 out of 10 from Imdb which is usually fine for this kind of show.
Watch it here
Not found streaming from United Kingdom.