Silver Demon King

There was a reason why many races were restricted by the heavens from becoming official summoners.

For example, Dragons are so powerful that they basically didn't have a need to become an official summoner as it would make them even more powerful.

When it comes to grey dwarves, they have the talent in creating powerful weapons and artifacts and if they could become official summoners, they would create strong artifacts and weapons for their elemental spirits, which makes them very powerful.

As for demons, they are very evil and like mindless killing along with the usage of all kinds of evil methods to become powerful.

Like this, all those non-summoner races have a special reason for not being able to become summoner races.

"Don't joke, Master."

When Twilight heard Ajax's words, he became excited for a moment before shaking his head.

"I asked you, can you stop being playful and focus on truly increasing your strength?"