While my girlfriend is away visiting her family for three days, her friend Honoka suddenly shows up. With a dominant, home-wrecker personality, she seduces me into cheating. Over the course of these 72 hours, non-stop sex awaits. She says, "Want to try something even better?" and pulls out a strapon, forcefully penetrating my ass. I experience my first "orgasm without ejaculation—female-like orgasm," pushed to the limits of pleasure through prolonged dry orgasms, eventually leading to repeated "extruded ejaculation" in an otherworldly erotic experience.