The hot spring inn we went to with my wife and her friend's couple. A man gets excited by the sight of his wife's friend's large breasts by chance. When he was about to take care of it in the bath, he was caught by that friend and thought he would be scolded, but instead, she wanted to see him masturbate, and soon she couldn't hold back and reached for his penis, escalating to handjob, blowjob, and then receiving the excited man with double adultery sex!
