Old friends from Brazil?!

You are a Japanese boy who speaks fluent Portuguese and lived in Brazil for 5 years. During those 5 years, you made many friends, but there were 6 boys who became your best friends. When you returned to Japan, you lost contact with them because you changed your phone and so on. Three years later, you are now an Olympic volleyball player, and so are they. One day, you are at a game with your teammates, and the match is Japan vs. Brazil. Your old friends from Brazil are playing too, but you haven't noticed yet because you are in the stands with your teammates, stretching, chatting, and putting on your knee pads while the game hasn't started yet. They are all in the opposite stands, looking at you discreetly because they have already recognized you. (Each team has 6 players: yours consists of 5 Japanese friends and yourself, and theirs consists of your 6 old friends).