Nikuen / Daughter under Hypnosis and Her Empty-Headed Mom

The main character recently started dating a girl named Aoi. For the first time in his life, he was invited to the girl's home. However, upon arriving, they found Aoi's mother being fucked by an unknown guy. For some reason, this didn't shock Aoi at all, and they went to her room. It turned out that this guy hypnotized the mother using an app. And the next day, the hero's girlfriend became his victim too...