It was Megu's birthday. Because my work was delayed, I couldn't pick up the reserved cake at the store, so I returned home empty-handed after midnight and apologized, but Megu said, "Just your feelings are enough, thank you," and said kind words to me. I was feeling small happiness even though I was busy. The next day, I finished work early, bought a cake, and headed home earlier than usual. When I returned home with my heart leaping with the intention of surprising her with a belated birthday celebration, my wife was having sex with a stranger.