Ramitan! ~Osananajimi wa Tennen Bakunyuu! Itsudemo Dokodemo Ecchi Daisuki!

One day I open my eyes, and there she is: a natural-bodied young beauty. She tells me, she and I are the last two people in this town... Rami-tan and me, all alone together, and we're lovers... But I have no memory of any of this. How did this happen? Day after day of uninhibited, lustful sex in an empty town! Lost memories and the heart of a self-proclaimed girlfriend, what acts will help you understand them both?