The double life of an otaku ❤♡ The Kosaka Kirino fanlisting ♡❤

Kirino is Kyosuke's 14 year-old younger sister. She is normally mature and independent for her age. However, this is a facade and she only reveals her true personality—immature, abusive and ungrateful with an aggressive, tsundere-like character—to Kyosuke, whom she orders to play her games and care for the characters, only to accuse him of being a pervert and a lolicon. She is secretly an otaku with an obsession for "little sister"-themed eroge, as well as the children's anime series Stardust Witch Meruru. She works as a magazine model and later becomes a novelist, the funds from which she uses to support her hobby. Despite her interests, she states she does not know why she started liking eroge and denies having a brother complex. Nevertheless, she frequently forces Kyosuke to spend time with her, whether it is playing games or taking her out, but denies that she actually enjoys the time they spend together.
Kirino is also shown to become frustrated whenever Kyosuke is with or shows interest in other girls. She even goes so far as to sabotage his time with another girl. Despite this, she is genuinely grateful to her brother. Although she states that she only likes eroge because of their cute characters, she shows a perverted side of herself when playing those games. She uses the screen name Kiririn when with her otaku friends. She used to admire Kyosuke in the past, whom she saw as a perfect brother. Kyosuke started distancing himself from her during elementary school. Kirino once tried to chase after Kyosuke (who ran away to play with his friends) but she tripped and cried in disappointment. This spurred her to start working hard on her academics and sports. She was also severely disappointed in Kyosuke's change in personality after the incident with Akimi.

from Wikipedia