A sex movie of Yui Nagase, she and Shinto have lived together for three years but he has never proposed to her. Their neighbor is Michael, a foreign guy. Michael has a hobby of exercising, he always goes out in shorts that make his big dick want to break out of his underwear and come out. Every time Yui sees Michael, she can’t take her eyes off his crotch. One time, while reading a book, Yui heard Michael calling for help. It seemed like something bit him so Michael wanted her to apply medicine. And the bitten spot was… his giant dick! The process of applying medicine was not very normal. Yui had to continuously apply it all over Michael’s dick, and after a while, Michael “shot” all the “poison” into Yui’s mouth! Shinto and Michael got along very well, he decided to invite Michael over to his house for a drink. Because of his poor alcohol tolerance, Shinto quickly fell asleep. This time, he asked Yui to fuck him right next to his boyfriend. Unable to resist this big cock, Yui was gradually convinced by him and let him fuck her right next to her lover. And from then on, Yui continued to maintain this wrong relationship with Michael…..