While your search keywords seem to be looking for a specific site to read in Spanish (such as Dragon Translation or TuMangaOnline), the phrase "good paper" in this context usually refers to a significant plot item in the series known as the Red Paper .
The darker side of "runaway families" and the exploitation of homeless youth.
If you are looking for the chapter itself, here are the official and common community platforms for Spanish readers:
: A popular scanlation group often found on community readers.
Does anyone know what does a red paper signify? : r/lookismcomic
