Tatsuya gasps when he sees his mother Ayumi doing exercises with a balance ball.A defenseless body curved along the roundness of the ball.A line of sweat oozes out from there and runs down the soft skin.The bewitching charm emitted by her mother's lustrous body fluids was so disgusting that it violently shook Tatsuya's reason.This is not allowed...Tatsuya pretends to be calm and desperately tries to control himself.However, Ayumi asks her to assist her gymnastics, not even in her dreams that her child has such feelings.