Well, my little sister can't be that cute. Volume 1

The relationship between 17-year-old Kyosuke Kosaka and his 14-year-old sister Kirino cannot be called warm: essentially, they haven't spoken normally for several years. One day, Kyosuke finds a disc with anime in the house and wonders where it could have... come from: their father and mother do not approve of such interests. Further – even more: under the cover of the disc is an erotic game "How to Love Your Sister." After conducting an "investigation," Kyosuke learns that the disc belongs to Kirino. Who would have thought that his beautiful sister, the school star and model, is a secret otaku, spending her earnings on anime, games, and figures! Kirino has a particular interest in games dedicated to the relationships of heroines with older brothers...