Miharu Usaki, the perfect little sister character from S1, recreates all the naughty fantasies that every man has had! We have prepared situations that everyone can relate to, such as "What if I get locked in the gym storeroom after school?", "What if I come across my sister masturbating in the classroom?", and "What if I go back to my parents' house after a long time and find that my sister's body has grown rapidly?". Enjoy the romantic daily sex life of a man with the most naughty and cute little sister.