My Little Sister Can't Be This Cute

Kirino Kousaka is a high-achieving student with a secret life as a model. Outside of her academic and professional life, Kirino enjoys otaku culture and plays erotic games, a fact that her best friend Ayase Aragaki is not aware of. When her brother Kyousuke discovers her games, he is introduced to her parallel world, where he meets people like gothic lolita Ruri Gokou and the otaku Saori Makishima. This discovery leads to a complicated situation for Kyousuke, who must balance his relationship with his sister and her hidden life.