All That is Chaos Must End in Peace (Warhammer 40K X Danmachi)

(All art, music, lore, characters, etc. all belong to their respective owners. DON'T SUE ME!!!!!)
(Also, I have little to no idea about the Warhammer universe. I'll be relying on you guys!!!)

(Inspired by Einlion's "Endless Path: Infinite Cosmos" on Webnovel)

Gekai, the world where Danmachi took place...it's not the first time that world itself existed. It was once the world where Warhammer Fantasy occurred.

(I know the world was blown up by Archaeon but this is my fanfic!)

The Old Ones did survive the death of the planet after fleeing from Chaos. (For the second time after the Stellar Gates. Damn cowards...)

They managed to survive and began salvaging their failure by taking whatever energies they could get their hands on before reforming the world into the one where Danmachi would take place. They even created the dungeon to contain the Chaos energies that lingered during the rebuilding to prevent another such apocalypse.

(Yes, in this fanfic, the dungeon was created by the Old Ones)

Their endeavors exhausted themselves and they fell into a deep slumber within the void of space. Never to be seen or heard from again.

A long time later, the gods of Danmachi were born and inherited the world that the Old Ones rebuilt. The dungeon was found but the power it was meant to contain was never noticed as it's THAT well contained deep within its near-infinite depths.

It wasn't long before the first gods descended to the new world.

But our focus isn't on the new world, Gekai, right now.

In another distant, more peaceful world, a young man and his pregnant wife were shopping before a robber began his raid and even took his wife hostage, so he saved her while also killing the robber, though he killed him too.

Awaiting judgment from the god of his world, he came to him and declared him deserving of Hell. Why? Just because he killed the robber.

Thus, your tale begins as...you forgot your name...