Kuroneko hentai from Ore no Imouto (Oreimo) Anime/Manga/Novel.
Ruri Gokou, better known as her alter-ego Kuroneko is a member of the Otaku Girls online community that Saori manages. She goes to an offline meeting where she meets both Saori and Kirino in person. Kuroneko is a fan of teenage fantasy anime and is sickened by cute anime. Due to both of their tsundere-type personalities, she constantly argue with Kirino when it comes to anything, but they still manage to maintain a friendship despite their differences.
Kuroneko is known for her dark clothing and scarlet eyes. She cosplays daily in gothic lolita clothing similar to those worn on her favorite anime. She writes doujinshi and novels, but none of her works are popular. Kuroneko is very intelligent and has a large vocabulary.