Michio, who was asked by his wife's friend, Ayana, to be a spa monitor, ended up playing with his nipples, a weak point, and unexpectedly climaxed during the treatment. Embarrassed by his public ejaculation, Michio writhed in shame, but Ayana visited his home as if nothing had happened. Originally, Ayana, who had a strong sadistic streak, repeatedly licked around his nipples, enjoying his sensitive reactions. Michio, unable to forget the stimulating sense of transgression from being toyed with his nipples, sought further pleasure and returned to the spa where she worked...
