Reiko had been watching over her daughter and son-in-law as they tried to conceive. She was worried when she heard that they were abstaining from sex for a month to increase the chances of pregnancy… But seeing her son-in-law's cock, swollen to its limits after a month of abstinence, she couldn't hide her surprise and excitement. (It's grown so big... If that goes in me... What will happen to me?) Despite trying to relieve her uncontrollable excitement through masturbation, Reiko couldn't hold back any longer and pounced on her son-in-law's cock.
