Fusion.

In the dark depths of a lonely cave, a fierce fight between light and dark, between divine and demonic was taking place. Two souls in one body, fiercely fighting for control and constantly tearing Ark's body apart from the inside. In the beginning, the fight had merely affected his consciousness, and his thoughts, bringing him unimaginable pain, but now, his body was beginning to crumble under the pressure. 

The majestic and fluffy pure white mane of the Overlord Elemental Wolf had become a dull grey colour, and many hairs had already fallen out. If Ark was able to stay conscious, he would also notice that his skin had dried up, and cracked all over. The dull grey fur was stained with dry blood that had been seeping out constantly.