"I am the Concept of Endings, and I have been quite stubborn." Grayson admitted. "If it weren't for you, I would have never even known about Death." Grayson added as he pet Death above his head.
"This isn't all your fault; I also had a hand to play in all this. If I had followed exousia's will, as I was originally supposed to, none of this would have happened. The other concepts would have never clung to immortality like they did if I just did my job right from the beginning.
Death did his best as your familiar to spread your philosophy to all the realms, but in the end, we couldn't enforce your philosophy into the other realms. Enforcing one's philosophy onto others wasn't what exousia wanted. So, if a concept refused your philosophy, there was nothing that Death could do about it.