A plump wife, Yurika, who is giving karaoke lessons to an office worker, Yamaguchi, who lives next door. As I passionately instructed him while touching his waist and belly, the man's crotch began to swell. Yamaguchi, who is single, can't stand it anymore and pushes Yurika down. "Mr. Yamaguchi, you can't do it!" Yurika, who has been addicted to the pleasure of an erection cock for the first time in a long time, eats and messes up the neighbor's dick.