Adrian could see why his entire body can only use Chaos Energy and it is due to his current Daemos Core which is now called the Kaos Paradox Core. His blue mana gauge has vanished and is replaced by a dark purple gauge that is labeled as Chaos Energy. Since Adrian sacrifice all of his skills except for the job class skills, the beings that were connected to him have sensed that their connection with him has vanished.
This includes the Vermillion Bird, the angels, and the devils. They reached out to Peridot and Ark whom already explained what happened. Adrian did not expect that he is still somewhat connected to them when he no longer has the Vermillion Heart and he sacrificed the angel and devil summoning skills earlier. Still, he no longer needs those skills as he has received better ones.
