
Rin visits her sick father-in-law, Eikichi, with her husband. That night, Eikichi catches her masturbating, leading to an unexpected turn of events. He boldly tells her, 'I'll teach you what real sex is if you take care of me!' and begins to ravage her right in front of his own son. His 'sex lessons' only get more intense from there.




















This series is always solid. I've found another favorite actress. The story and setting are a bit of a stretch, but Rin-chan's cuteness and sexiness more than make up for it. Her sultry expressions throughout are absolutely irresistible.
Rin is beautiful in every way—face, body, and skin. While there's a lot of acting involved, her sensitivity and submissive demeanor are very appealing. That said, the drama-heavy approach without a real climax is a drawback.
Yuji Yamada's (male actor) sluggish lines and movements are undeniably stale, and why cast a male actor who can't perform at his best with young women? Also, the husband is just in the way.