A video of a one-night, two-day hot spring trip with Uncle and his mistress Yui. College student Yui starts working as an uncle's mistress for pocket money and curiosity about sex. Today is their first meeting. Tense Yui makes Uncle horny all the time, who then shoves his dick into her mouth in the open-air bath. Excited by being lecherously tormented, Yui gradually transforms into a submissive seeker.
