Tsuyoshi, a brother-in-law, is staying with his older brother and his wife. When his brother isn't looking, he plays pranks on his sister-in-law Yayoi. His caresses escalate right next to his brother. He puts a vibrator on her and forces her to give him a blowjob, and then he fucks her right next to her as she sleeps... Tsuyoshi's desires get even more out of control, and he calls his friends over to restrain Yayoi and play with her. Even though she resists, her body responds...
