Mari, a 55-year-old woman living alone. Despite her beautiful appearance, there's likely a reason behind her solitary lifestyle. While meeting someone she occasionally dates at a park for a walk, they get caught in a sudden downpour and end up going back to her place. This leads to sex after a long hiatus. Having not had sex in several years, her pussy is incredibly tight—unexpectedly so for a woman in her fifties. Especially during cowgirl position, the pleasure she experiences is unlike anything she's ever felt before.