A friend from college, Oki, successfully started a business and held a celebration party. My wife and I were invited, as we hadn't seen him in a long time, and we happily reunited at the event. However, after the party ended, on our way to an after-party, my wife became heavily intoxicated and Oki offered to escort her back to her hotel room. At the time, I didn't suspect anything. A few days later, I casually played a DVD sent by Oki and couldn't believe the shocking scene unfolding before my eyes...