Kotaro, who has weak nipples, works hard to correct his weakness, but even though his body has become stronger, his nipples are still as sensitive as ever. - One day, my mother's friend Nozomi came to the house... - Nozomi, who was in agony after not having sex with her husband, suddenly changes when she learns about Kotaro's erogenous zones, and plays with his sensitive nipples while stealth from everyone around her. - Kotaro reacts to the pleasure of being sucked and licked over and over again, and even though he is confused by his first experience, he gets absorbed in torturing her nipples...