"I'm coming home now," came a sudden phone call from her husband who was working away from home. His wife, Tsubasa, should have been happy, but she looked confused. That's because Tsubasa had taken advantage of her husband's absence to have a physical relationship with her son. When her husband comes home, she won't be able to have sex with her beloved son anymore! The moment she thought this, Tsubasa's Tsubasa went off and she jumped up and ran to her son...