A common complaint in the visual novel community is games that force players to sit through hours of mundane slice-of-life dialogue before reaching the adult content. Imouto Bitch ni Shiboraretai is structured more like a nukige (a game designed almost exclusively for masturbation).
: A young man discovers a hole in the wall between his room and his sister Sayaka's room. Entertainment Focus imouto bitch ni shiboraretai best