Great Release, and welcome to FLM!

About the aspect ratio:

Here is a 1080p WEB-DL in the 1.85 aspect ratio, with optional English subtitles included in the MKV file.

However, it seems that this movie was filmed in the 4/3 aspect ratio, because there is a small (15.10 MB) AVI file on eMule ...

The principal character in Helvécio Ratton's delightful film has been adapted from a book and comic created by the Brazilian cartoonist Ziraldo, and tells the story of a happy-go-lucky 10-year-old boy who is growing up in a city in the 60s.

https://www.imdb.com/title/tt0257909/
https://www ...