While the party watched, everyone managed to grasp one thing. The new title that Onyx had gotten was clearly more influential than they had believed. More so than what onyx had yet to realize too.
The dual hero of light and darkness was an interesting title that focused on those pacific qualities that onyx represented. But it had come at the willingness to sacrifice himself using both of these elemental manas in every aspect. Therefore, when Onyx had been healed and survived, he had felt a deeper connection to both elemental manas but just chalked it up to a title and how he was growing.
The fact that he had been healed so quickly should have been the thing to stand out. But no one had realized that the changes in Onyx had been more than just a title and ability to bond with both elemental manas.