After Aren passed out and his soul went to slumber, an ethereal silver-blue liquid spread throughout Aren's body, changing the quality of his body to a higher level. This liquid was mystical and even thinner than the thinnest liquid, but it held mysterious genetic power.
In the first process, the base power of the Celestial Ichor was already inside the body, and it had done the initial transformation. However, that ethereal silver-blue liquid was not activated because Aren's body was fundamentally weak to bear it and needed a higher bloodline and a higher lifeform stage to complete the final process.
...
"Well, it seems that everything went well in the end, I think. Right, Lord Kylie?" Tarrox sighed in relief as he looked at the beautiful lady wearing a mystical purple long-sleeved dress.