The energetic, tanned girl Riko sets out on a home-visit mission to help men struggling with premature ejaculation. The plan was simple: if they could hold back their climax, they’d be rewarded with her swallowing their load. But Riko, who loves swallowing, couldn’t resist making them finish immediately—then gulping down every last drop of their cum. The director sighs in exasperation: “This isn’t how it’s supposed to work!” Just how far will this chaos go…?