The father-in-law's uncontrollable desire due to his erect nipples, and his young wife's acceptance of such desire. (Shiratori Asuka, HBAD-205)

The father-in-law's desire was constantly aroused by the faintly visible nipples on his daughter-in-law's clothes! Meanwhile, the young wife, unable to satisfy her husband alone, indulged in masturbation. The two thus began to crave each other's bodies under the same roof!