When Murkel had lost the fight to Raze the Dark Magus, quite a lot had happened to him in between thena and where he was now. Far more than anyone coudl imagine. He had escaped by opening up a portal heading to a world filled with beasts.
While there, he was still struggling with his own body. Before, when becoming the head of the Dark Faction, he believed he had synergised completely with the beast that was within him.
It turned out it wasn't the case at all, and only a part of it had really synergised with Murkel. Spending time in a world that had nothing but beasts, the power had synergised even greater with him. And not just that—he had grown stronger.
Murkel fought against powerful beasts that wished to do battle with him, and after beating them, he consumed their crystals. A regular person was unable to eat raw crystals—but it was hard to tell if Murkel was more beast than human at that point.
