Chaoyang, whose hobby is muscle training, finds out that his sons friend, Kentaro, lacks exercise and teaches him various things. - The size of her crotch that she accidentally touched reminds her of her sexual desire that cannot be dissipated by training alone. - And Chaoyang, who lost her desire, tempted him by playing with his cock ... - However, her body climaxed many times due to his unequaledness that did not end once or twice, and she continued to cry in agony. - Chaoyang finally gives up to the unequaled copulation with him that seems to be forever.
