Did we even have a brother living in our house ~The three sisters who have zero resistance to men are incredibly easy to imprint and corrupt

Description: Using hypnosis to impersonate their brother, he fucks the three sisters as much as he wants: the prim honor student eldest daughter raised in an all-girls school with almost no experience with men, the secret otaku second daughter who draws erotic manga on the side, and the pure innocent youngest third daughter with zero sexual knowledge.