My wife's younger sisters came to Tokyo for exams. One was preparing for the exam, and the other was scouting and attending cram school lectures for next year, staying at our house for a week. I tried to secretly film my sister-in-law's panty shots by setting up cameras around the house, but they were quickly discovered by the sisters, who then blackmailed me with 'We'll expose you' and used me as their sex toy. The obscene pranks from my sisters-in-law escalated while I was working remotely at home, leaving me at their mercy day and night.
