Syphiinz

Apollo Kaiser, a boy who bore the unlucky fate of being unable to grow strong, was condemned by his family. 

Discarded by his mother and abused by others, Apollo gives in to his rage.

However, this action results in his death. Many would believe it to be the end, but Apollo's death was a required catalyst.

The Demon Monarch System finds its heir and attaches to his soul, bringing him to a new world where he starts his journey to supremacy.

This difficult journey rife with conflict, conquest, and brutality shall serve as Apollo's temperance.

Watch as the heir of the Demon Monarch rises above all, conquers Sin, subjugates unthinkable enemies, and even brings about the destruction of worlds!

The rise of the next Demon Monarch begins...

Book Discord: https://discord.gg/vH3BWtDSnC
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The Demon Monarch System

Unlike the rest of his demons, Ouroboros didn't actively train to grow stronger. There was no need to, because Ouroboros's rare bloodline carried out all the strengthening that he needed. The only thing Ouroboros needed to do was fuel his bloodline's power by devouring and falling into a dormant state that allowed its increased activity.

Therefore, by just devouring and sleeping afterward, Ouroboros grew stronger at a rate that matched or even eclipsed his peers―which were Apollo's strengthened demons.

Additionally, growing stronger meant that the byproduct of his absorption―the Fragments of Sin―grew both stronger and purer. As long as he experienced a sizable jump in power, it wasn't far-fetched to say that Ouroboros could produce the next level of Sin Materia.

Ouroboros's Evolution