[MRSS-159] I caught my wife being cheated on and there was nothing I could do but watch her cum over and over again Yui Hatano (Censored)

My wife's birthday. Work took longer than expected, so I couldn't pick up the cake I ordered at the store and returned home empty-handed after midnight. However, my wife said to me kindly, "Just the thought is enough, thank you." I was busy, but I realized the small happiness. The next day, I finished work early, bought a cake, and headed home earlier than usual. I got home excited about celebrating her birthday a day late with a surprise, but I found my wife having sex with a stranger.