Isaiah wanted to save his sick brother so, he signed up for something dangerous, to steal the gem of regeneration from the king of kingdom of darkness. He thought he could do it, he assumed that he was powerful enough, after all the gruesome training he went through ever since he was a kid but he ended up being imprisoned by the crazy love of the king himself. It doesn't end there, he has even charmed the king of Blaze and the king of ice. All are crazy for his love and his whole being. They will do anything if they can keep him by their side even if it means destroying his emotions and his everything because his everything needed to be them.