Mion is relaxing in her room. Her boyfriend becomes aroused when he sees her huge breasts. He gently plays with her nipples, biting, pinching and rolling her erect nipples. Unable to resist, Mion asks for her own nipples to be caressed as well, and they begin to tease each other's nipples. Even after penetration, they continue to caress each other's sensitive nipples vigorously, in a lovey-dovey mutual nipple teasing sex. *This work is a re-edited version of "My girlfriend has sensitive nipples, so I teased each other's nipples." (product number: 2ecb00150).