Chihiro's birthday. I, who was delayed at work, couldn't pick up the reserved cake at the store and returned home empty-handed after midnight. But Chihiro kindly said, "Just your feelings are enough, thank you." Despite being busy, I felt a small happiness. The next day, I finished my work early and bought a cake, heading home earlier than usual. Excitedly planning to celebrate her birthday, which was a day late, with a surprise, I returned home to find my wife having sex with a stranger.