DOKS-436 A man and a woman whose nipples are the most erogenous zone just play with each other's sensitive nipples.

Generally, the pleasure of the nipples is brought about by the secretion of ``oxytocin,'' which is called the ``happy hormone.'' The synergistic effect of the interaction of oxytocin and dopamine provides a unique pleasure unlike any other. The nipple, which can be called a new genital organ, is a part that is equally attached to both men and women. In other words, the feeling of being teased by you can be conveyed in the same way by being teased by yourself. Please enjoy this mutual nipple play. [*There is some disturbance in the image and sound]