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

"Impressive," Sol had one hand shielding his eyes and the other grasping Arla's tightly, staring in the air as they both watched Ikaris and Dina go at it. "I never thought that I would be able to see the day those two take a fight seriously against each other."

"Milady has requested a feiendly duel with Dina in the past, but she has always been too afraid."

"I know that much, but just look at her now; she doesn't even know her own powers and limits," Sol grinned, pulling arla closer to himself and kissing the side of her head. "Let's regroup with the others, Xie said somethin ginteresting and I want to talk t him about it.

"Ah, yes," Arla smiled. "I often forget that we are within your soul, you are aware of everything which happens in this plain," She looked up at him, seeing the destroyed environment around them shift with passing lights before the two of them appeared inside of the bubble with the others.

Forced Sun vs Dying Star.