Sister-in-law's temptation

My brother and sister-in-law KAORI are a good couple from my point of view, and my sister-in-law is very good to me. However, after seeing my sister-in-law having sex with my older brother's junior, she noticed it and suddenly gave me a blowjob, invited me to take a bath, and seems to be having fun seducing me... If you do something like that, I won't be able to stand it anymore...!