Reiko, who is worried about the fact that her body has become flesh recently, was looking for an effective dieting method. In the meantime, I learned about the existence of "Kaatsu training". However, there is no pressure band at home, and Reiko tries to do "kaatsu training" with hemp rope. And Reiko asks her son Kenji for . Kenji tied up Reiko for no apparent reason, but she couldn't control her lust because of the obsceneness of her mother's body that the rope had bitten into.