C1421 Information about Orcs
After all, the Half-Orc had an impure bloodline. It was very difficult for it to revert back to its roots when compared to a purebred Divine Beast. This was also the reason why a purebred Divine Beast looked down on a Half-Orc.
Usually, in a generation, there would be tens of thousands of purebred Divine Beasts that would revert back to their roots