Demonic Physique Growth

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Two weeks have passed since then, and in between training, relaxing, and continuously training again, I've been steadily improving my physique. But not only that, but also my other Demonic Ability, one I acquired by devouring and absorbing Marchosias powers. Apparently, unlike Divine Abilities, Demonic Abilities improve based on my Rank as a Demon King.

"Phew…" I had just finished eating around 50% of all the demons we've ever hunted and killed so far, and it felt incredible. There wasn't as much agony anymore, and just a very intense burning sensation that stayed for hours. I had probably gotten used to the pain that demonic energy causes now. Oh, and I've been eating these fuckers raw, even drinking their acidic blood.

I looked at the system messages with a slight sense of satisfaction. There was still over two months to go but I had already donned half of the demon meat. If I can get the other half done, just how strong can I grow?