I really like this series. It seems realistic and is engaging, especially for sports fans like me. All of the 1 star reviews seem to be about Episode 5. I don't agree with how the show presented Indonesia, even though Indonesian fans did try and distract Korean players.
If someone didn't know that, they could easily percieve it as racism and xenophobia. This show was very entertaining and fun to watch, and it's only black spot would be the way Indonesia is portrayed in Episode 5, since the show gives no background for what the Indonesian fans did.