The strongest hero.

The simple answer is that even the Primordials can fall in love. And Ashu was no exception. He opened his soul to her – and she to him. And now Sar-Ilam is already a Dragon.

So, Sar-Ilam undeservedly became a Dragon?

However, Urgash is so greedy and ambitious that he would not tolerate equals near him.

Well, even seven Dragons are not equal to Ashu.

But in terms of status, even demons recognize themselves as being below dragons.

According to the hierarchical ladder, both dragons and demon lords are second after Ashu and Urgash, respectively.

That's how the world is: good is stronger.

That's why I claim that the Overlord is at least not omnipotent;) and I chose Railag in the poll (and, judging by all, the main arbiter of Ashan's fate, i.e., Ubisoft, agrees with me)