A reversible uncle Umi, an innocent lolita

It's been 10 years. Her hopeless, cute niece, Umi, has returned home after being transformed into a hopeless, free-spirited, sadistic beauty. He takes his kind and serious uncle around, provokes him in the car, eats his favorite cock, shows off his routine masturbation, and releases his sexual desires by forcing him to bathe at an old man's guesthouse. Now that S awakens, Umi has her uncle back at night, and has an angel sex where she can do whatever she wants, anytime, anywhere!