I'm a teacher and I'm dating one of my students, Momo. It's a secret relationship that I can't tell anyone about, but she looks a bit like my ex-girlfriend Kana, who I used to date but broke up with due to our different views on marriage...huh?! Could it be that they're sisters?! Is that a coincidence? No, maybe it's inevitable...? They're jealous of each other and fight over my dick all day long! Even during sex, I'm in a frenzy with my beautiful sister sandwich! The shape of their pussies is the same, and before I knew it, I had a lucky sister threesome harem! I wonder if I should marry the one who gets pregnant first after finishing with a thick creampie every time!