At my wife's parents' house, I enjoyed a yakiniku party with her sister (Yui Hatano), and I got drunk and attacked Yui while she was asleep. When I woke up, I had already come inside her, but I couldn't contain my excitement when Yui didn't resist, so I went ahead and came inside her again. The act escalated more and more, and I continued to rape her every day in front of my wife...