Agathon was a demon lord, the Benevolent ruler of his own domain in the underworld. This domain is where the most noble warriors who commit grave sin end up or as the demons call it, Dishonor. Agathon and his twelve Shadows were the ones responsible for ruling Dishonor, his job was to discover the sin and make sure the souls ended up in the correct place and were distributed to the correct demons.

Agathon ruled Dishonor for centuries on end without issue, even stepping foot in the world of the living to reap souls that were out of control. Eventually his underling "The Shadows" got bored and they opted to mutiny his rule over the domain, not willing to give his millennia of soul power he had accumulated to the other shadows Agathon decided he'd leave before they could attain the ability to even rule his domain, so he found a freshly deceased soul.

A man with raven black hair, who had for reason Agathon had yet to discover slaughtered his entire town and family and was swiftly after killed by himself. Agathon forced his way into the soul of the warrior but this had unforeseen consequences, In the infinite well of remorse and regret the young man had for his actions Agathon lost his body, and became fused to the soul of Cutter, in turn his presence was entirely hidden from his former subordinates. That was acceptable, but from there he lost his sense of tangibility and then the demons overwhelming power s=began to force the young mans soul out of the underworld as the recently deceased man came back to life, but his power was so great the man lost his sense of self, sense of morals and the entirety of his memories, essentially becoming an entirely new person, even his body was not the same as the one he left behind, instead it was formed off self image and Agathon's well of power. This process took years which the two that were now one spent years on end comatose, when the man awoke Agathon was right there with him in the shadow, the demon attached to its new host, its powers fueling the immortality and new found strength of a mortal with no memory.