SNIS-717 With dad and nine brothers, a super potent gene family of all men! The diligent sister who takes care of the whole family has sex continuously from morning to night Aika Yumeno

The Inoue family is a large household full of men. The mother has passed away, and Aika is the only woman... Besides handling all the housework, she spends every day managing the insatiable sexual desires of her nine brothers and father. From morning till night, she's constantly busy taking care of everyone in the family, squeezing in sex whenever there's a spare moment. In this family of ravenous sexual appetites, it's the story of 'Big Sister' Aika fighting alone!