Aika, who is in her fifties, has been experiencing her first extraordinary sexual experience and has come to realize that new situations and stimuli bring greater pleasure. Brain orgasm sex, which is felt not only by the body but also by the head... She is no longer satisfied by just sucking someone else's dick, and she releases a womanly sexiness and female odor that she has never imagined in her life before, reaching the greatest climax of her life.