Oreimo is a manga which starts well – high school boy Kyousuke discovers his fashionable (as in fashion model) and popular younger sister Kirino is secretly an otaku who is really into games with moe little sisters and decides to bond with her through her fandom while also covering for her with their parents – and then hits an ending where the brother ends up in an incestuous relationship where he ends up marrying that sister. One of the supporting characters in that work is Kuroneko – one of Kirino’s friends in otakudom, who also has a romantic interest in Kyousuke. Now, Oreimo Kuroneko dares to ask the question – what if instead of boning his sister, Kyousuke decides to court his sister’s classmate who is also into him instead.