Mika had two secrets that she could never tell anyone... One was that she was having a relationship with her son, Shintaro. Today, too, she accepted the clinging Shintaro due to the loneliness of her husband's absence. And the other secret was that she had been developed by her son's friend Shimada and became addicted to anal sex. One day, Shimada made a proposal to Mika, whose body could no longer do without the stimulation of anal... Finally, the mature woman Matsushita Mika lifts the ban on anal sex!!
