My brother and my sister-in-law KAORI were a happily married couple, and she had always been kind to me. However, one day, I caught her having sex with my brother's junior colleague. After that incident, KAORI began aggressively approaching me—suddenly giving me blowjobs, inviting me to bathe with her—clearly enjoying the way she was seducing me. Her behavior pushed me to the limit, and I could no longer hold back…!