Kirino Kousaka (高坂 桐乃) [Koikatsu]

Ore no Imouto ga Konnani Kawaii Wake ga Nai OreImo 俺の妹がこんなに可愛いわけがない Kirino is Kyosuke's 14-year-old younger sister. She is mature for her age with a cold, tsundere-like personality. She has a strong "little sister" fetish and owns many adult games with older brother/little sister themes, relying on a modeling job to pay for them. Despite this, she states she does not know why she started liking it, though it is suggested that she has a brother complex and is using the games as a surrogate to this. She often denies such feelings and believes the 2D and 3D worlds should be kept separate.