Eriko, who had an affair to relieve the stress of her son who was preparing for the entrance exam of a prestigious school. Her body was filled with a different, harder male organ than her husband's, but at the same time, she also felt guilty. At that time, rumors of this immoral relationship began to spread at her son's school. Eriko was shocked and immediately tried to settle the rotten relationship... However, she couldn't stop the pain of her body, which had been tamed by pleasure. "It's over today... so, please!" The forbidden relationship was about to be brought to an end.