Karyu kept thinking until he made a decision.
The man that laid unconcious behind him started using him as a tool, as a THING, this man that kept using a being as powerful as Karyu acted infront of him, refusing to show any form of emphaty or compassion, he even took Karyu's liberty by turning him into a feral dragon, he couldn't forgive him.
Karyu slowly looked at Luke's unconcious body and wandered towards him, he laid there, looking at his unmoving 'Rider', "Luke, ever since i met you, i've always thought that we would become inseparable." started Karyu, "But, there's one thing that made shattered this hope, you took away my freedom, you started using me as an object for your own will, that is a thing i will NEVER forgive." he finished as he slowly raised up his claw, only to descend deep in Luke's chest, blood splattered as Luke's tunic was coated with bright red, Karyu kept stabbing Luke's lifeless body, more blood coating Karyu's sharp claws, he kept stabbing untill Karyu ripped Luke's heart out and began devouring it, his scaly lips and teeth being covered in the sweet crimson.
Within seconds, Karyu finished eating the heart, only to feel a powerful pain building in his spine, "Grruuuagh!" he groaned as his bones cracked as they reshaped, his entire body changed, only to realize that he was now able to stand back on two feet.
Karyu slowly got up as he looked at his changed body, "Holy shit... I'm back..." he thought, Karyu quickly looked at the dragons behind him, realizing that they were still feral ones, he was about to ask why didn't they change into anthropomorphic dragons like him? But his question was answered quickly, they didn't kill their riders, Karyu smiled, the dragons looked at him like a leader, they saw him as the head of their flight.
Karyu....