Du'an noticed that the energy inside the magic circle that held Charon started to become chaotic. They could see the obvious transformation of Charon inside the magic circle as it absorbed all of the energy that swirled on top of the clouds. All this powerful energy filled up Charon and it also awakened a part of the Dreadful Heart as it seems that it still has some consciousness.
Charon knew that it must devour the last remaining intent inside the Dreadful Heart in order to become the owner of it. There were still traces of the Dread Village inside its heart and Charon fought a battle of will against it. Charon might be strong but even it has a weakness when it comes to evolution.