TOKYO, June 19 -- Japanese football fans have long been celebrated for leaving World Cup stadiums spotless after matches. But a viral social media post has turned that feel-good tradition into an unexpected flashpoint over who really does the cleaning once everyone gets home.

The online debate erupted after Japan's supporters were once again applauded for tidying the stands following their country's thrilling 2-2 World Cup 2026 draw with the Netherlands on June 14.

Photos of fans dutifully collecting rubbish after the final whistle quickly made the rounds online, reinforcing Japan's global reputation for courtesy and civic pride.

Then came the backlash.

Inspired by Tokyo Metro's famous etiquette campaign posters, an AI-generated spoof...