Rowan_Eternal

After saving one world from a Demon God and earning the trust and devotion of a perverted goddess, Sol is rewarded with all his powers intact and sent back home with the goddess accompanying him as his personal slave. 
 
That was supposed to be the end, the Demon God was supposed to be his last great trial. However, they are both summoned once again to an even more doomed world, almost immediately after returning to Sol's. 

This time around, Sol refuses his role as hero.

Unable to find rest, he turns his wrath to the pantheon of gods in a spiteful quest to become the strongest being in existence, followed by his slave who took his place as hero. 
Battles await, secrets of old begin to scurry into the light when the world as he knows it begins expanding beyond the visible horizons of reality and deep into the fringes of eternal darkness.

Terrible consequences lay beyond the borders of the known.

The World's most Overpowered Side-Character

"What is to say that the Emissary of Darkness will even reach this far, we exist in a plain that Giza has never seen or noticed-"

"I assure you, she is aware of us," Lumi, after observing as passively as she could, stood from her seat and turned to her fellow Council. "The same way that we can pry into the endless dark, she too can stare into the eternal light."

"There is no proof that she can." The other female Emissary next to her debated. "We do not even have proof that Giza can interact with light at all."

"I do," Sol spoke again. "Before I left for Source two years ago, I made contact with her and in our exchange I directly injected my mana into her physical body."

"Was she harmed?" Lumi asked hopefully raising her fist in a gesture of fighting. "How was I unaware of this as the one watching over you?"

Provocation.