My brother and KAORI sister-in-law are a couple who are on good terms from my point of view, and my sister-in-law treats me very well. But after seeing her sister-in-law having sex with her older brother's junior, she suddenly realized that she was giving me a blowjob, invited me to take a bath, and enjoyed seducing me. It's like... If that happens, I can't take it anymore...!
