I Made My Little Sister A Maid Who Can Endure Cumming For 3 Days While My Parents Are Away. Momo Inoue

A brother living with his parents and little sister. One day, he catches his sister tampering with her test results. Seeing this as good blackmail material, when their parents are out, he orders her to obey him as a maid if she doesn't want him to reveal the tampering. The innocent sister, not wanting to be exposed, agrees... He toys with his overly sensitive sister, continuing a punishment game every time she cums... Momo-chan's obedient face in complete POV, and all cumshots are facial!!