Desire

Even though Nial lost his memories of the past, his mind was already further developed than anyone his age. 

He had still the usual spurts of a child, cried often, and played around with Rex and the familiars of the servants in the palace, but he was also very diligent.

Even before he could walk properly, Nial began to learn how to read the language of the Lacardian Empyrean Void. It was not too different from the ancient universal language, which made it much easier for him to learn the alphabet and learn how to read.

His memories of the past might have dispersed but his muscle memories and the distant blurry memories that couldn't be grasped anymore, helped him to learn to read. Expanding his knowledge about the history of the Lacardian Empyrean Void and the powers of the Creatoran was important.

He was the Crown Prince and would have to rule the Lacardian Empyrean Void in the future. That was his fate, and not something he could escape just like that.