The student rushed to get his hands on the kit when it was released in august.
The 20-year-old went to the nearest store, grabbed the famous yellow and green top and went to the till, where he was greeted with an excited smile.
Joo says the shop owner thought he was supporting the current government because he was buying a shirt.
Joo doesn't agree with the government of Jair Bolsonaro. He decided to buy the shirt in the store to make people think he did.
Joo pretended to be a Bolsonaro supporter. It was another sign that the yellow and green shirt made famous by Pele, and many other people, has become a symbol of a divided nation.
A history professor at the University of Braslia says that the shirt has political meaning.
Millions of Brazilians took to the streets eight years ago to protest against the then- President, Dilma Rousseff, dressed in the colors of the flag as they demanded her impeachment.
The current president uses the same colors as in the previous year.
The key colors are green, yellow and blue, with people wearing T-shirts, the national flag and accessories.
A good part of the population no longer identify with the green and yellow shirt because it's become a symbol of Bolsonaro's government
The encounter with the shop owner is one of the reasons Joo is hesitant to talk politics. Political disputes can lead to death in Brazil.
A supporter of former president and left-wing candidate Luis Incio da Silva was shot and killed by a police officer at his 50th birthday party.
After Mr Arruda died, he retaliated and shot his alleged attacker, who was hospitalized before being sent to prison.
According to reports, 44-year-old Benedito Cardoso dosSantos was killed by a colleague after a heated political discussion. A suspect is in police custody.
Tech programmer Ruy Arajo Souza Jnior says he will only wear the shirt at home because he will be mistaken for a Bolsonaro supporter.
He hopes the shirt will unite us and symbolise true love of our country if he wins the election.
The left-wing candidate wants to claim the flag. Several of his supporters have made a point of wearing the shirt during their performances.
At a concert, Djonga told the crowd that wearing the shirt in public was a protest.
He said thatBolsonaro supporters think everything is theirs, they appropriate the meaning of family, and they appropriate everything. Everything is ours and nothing is theirs.
They are not the only ones who are wary of wearing the shirt.
I'm a right-winger. "I want to vote in my yellow shirt," says Passos.
She's afraid to wear it on voting day because of the tense environment.
What do the football players think of the shirt becoming a symbol? Richarlison says the Brazilians take away part of the country's identity because they don't see the shirt and the flag in the same way.
I try to spread the identification we have with them to the world. I think it is important to know that we are all Brazilians and have Brazilian blood.
The advertising campaign for the new shirt features people from different sides of the political spectrum, focusing on togetherness. According to Nike, the shirt iscollective. More than 200 million Brazilians are represented. It's ours, that's what we say.
Political references or religious terms were not allowed by the brand. The blue away shirt sold out a few hours after it was released.
The coach of Futsal in Brazil says he will be wearing a blue shirt.
He doesn't like wearing the yellow shirt. I don't like the idea of taking my old ones out of my drawer. The shirt itself is gorgeous.
The same sentiment was shared by his friends. He says that he's sad about the yellow shirt. Brazil will win its sixth World Cup title in blue for the people.
The shirt is popular with other football fans.
The World Cup will help get Brazilians back behind the yellow shirt, according to a supporter group.
The founding member of the group says that they don't agree with those who say the Seleo's yellow shirt is dead.
He says it makes no sense to say the yellow shirt doesn't represent this or that politician when the whole idea behind it is the opposite.
The pride we have as Brazilians is reflected in our team entering the field. The love we share shouldn't be affected by the October polls.
The shirt has become a bigger symbol of patriotism for some Bolsonaro supporters.
The left-wing governments don't wear our flag, so there wasn't a sense of patriotism before Bolsonaro came to power.
Thanks to our president, these values have been saved for us.
The shirt used to refer to football is now showing love for the country.
The flag will disappear if the left is elected. Have you ever seen a flag in someone's hand? It is not possible to say yes. That is not going to happen, as Bolsonaro will be the next president.
This is the first time that Brazil's presidential election has been so close to the World Cup.
The professor says that the shirt is associated with politics in Brazil. He said a shirt is just a shirt.
It has meaning, but it doesn't represent a specific government. Our country and team will always exist.