my wife's younger sisters came to Tokyo for the exam. one is taking the exam, and the other will live at my house for a week to scout locations and take preparatory school lessons for next year. i set up cameras all over the house to secretly film my step-sister's panty shot, but i was immediately discovered by the sisters, who threatened me, saying "i'll expose you," and used me as a toy to release their sexual desires. the obscene pranks of my step-sisters against me, who is working remotely and at home, escalated, and i ended up being fucked day and night.