Hi, thanks for your comment, and I'm really glad that you're enjoying the characters and history!
As we are launching the game on Steam, we had to match the price on our other platforms (here and on Patreon) to that of Steam.
Here on Itch, we are only able to set one price that is in USD, and we can't amend it per region, as far as I'm aware.
On Steam, however, we can adjust the price per country on Steam, and it is currently planned to launch at a more affordable price for those in Brazil. So hopefully, you will still be able to continue the game over there :)