"Miyako" had sex with her husband moderately and lived a life without any inconvenience.But something is missing...One day, her husband's junior will come to stay at her house.What she came to was the senior she admired during her school days.At this time, "Miyako" had a bad feeling...That night, when the man went to the bathroom, he accidentally opened his bedroom door and witnessed what the two had done.The man who couldn't control her own feelings pushed down "Miyako" who was alone, and she also accepted the man if it was only her mouth.Unable to suppress her growing emotions, "Miyako" abandoned her husband and became a lowly woman who enjoys hot and violent sex with her new man.