This has resulted in the thing that the team is not only praising Japan fans on social media platforms but have respect for them too.
Yuya Osako exacted sweet revenge for Japan on Tuesday as the Blue Samurai beat Colombia 2-1, becoming the first Asian side ever to beat a South American team at the World Cup.
"But we have to take into account that we played against 10 men for nearly 90 minutes so next game will be a different story, we have to think about that".
Later in the day, Senegal fans were spotted picking up empty bottles and plastic snack containers after their 2-1 win over Poland.
The death threat brings to memory the death of Andres Escobar who was shot upon return from the US '94 World Cup after he scored an own goal in the encounter with the USA.
Colombia are the Group H favourites and expected to beat Japan, who only installed Akira Nishino as head coach in April after sacking Vahid Halilhodzic in a high-risk move.
Similar scenes were witnessed at the 2014 World Cup in Brazil, even after they were defeated 2-1 by Didier Drogba's Ivory Coast.
"It's not just part of the football culture but part of Japanese culture", Japan-based football journalist Scott McIntyre told the BBC. We want to show that all other sporting events, including football in Japan, are also clean.
Moments prior to the calamitous exit of the African Pharaohs, Senegal sent African fans into raptures by handing the continent its first victory at this World Cup.
Egypt's Tarek Hamed, left, and Russia's Alexander Golovin compete for the ball during the group A match between Russia and Egypt at the 2018 soccer World Cup in the St. Petersburg stadium in St. Petersburg, Russia, Tuesday, June 19, 2018.
When Senegal and Japan meet on June 24 in Yekaterinburg, we can at least be sure that the stadium will be near spotless, whoever comes out on top.