Penis slides into vagina... it's the basic human sex act, and the one that makes babies. What goes on in there? Penis and vagina talk to each other! Here are a sampling of the conversations.
Young Haruko wanders into her brother's room in the nocturnal hours and uses her brother's hard dick to take away her boredom. She is confronted by a spirit-girl in his closet who considers his dick her personal property. Haruko looks for a way to solve her problem.