When Ai meets her son's childhood friend Kosuke, who lives next door, for the first time in a long time, she accidentally sees his impressive penis and becomes aroused... She approaches him casually, only to discover that it's an insatiable cock that never loses its strength, no matter how many times he cums! Ai is violated all night long and comes countless times. Since then, Kosuke, captivated by the older man's eroticism, visits her almost every day. Ai's body can't stand his bottomless desire, which comes at her all day and night...