Older sister Reiko and younger sister Akari. They are famous for being close sisters who have families and live in the neighborhood, but in fact they have a tremendous sexual desire and have grown up competing to see which one can please a man. Meanwhile, when they find out that each other's son has a problem, they come up with something... Which one can solve it? In other words, it was intended to satisfy sexual desire, which one can satisfy the sons.
