I know I sometimes talk too much about my wife and her origin to your liking, but for better or for worse, Japanese norms have become embedded into my DNA 😛

In Japanese, people typically say two things during finales.

Otsukaresama deshita お疲れ様でした (Thank you for your hard work)

Osewaninari mashita お世話になりました (I have become indebted to you)