DelzGB

[The first arc is about obtaining the system, so please be patient and give the story a try! I promise it will be worth it.] 
In a world where gods have erected a worldly monument, the "Tower of Yggdrasil," people are drawn to its impossible challenges. This towering structure pierces the heavens, concealing both unimaginable beasts and priceless treasures within its unforgiving depths.

Enter the realm of "Adventurers" – daring souls who ascend the Tower's brutal floors in pursuit of glory. The fortunate ones secure the sponsorship of gods, gaining their Blessings to wield divine power in the face of peril. Yet, amidst this celestial lottery, Bastian, an unfortunate adventurer, remains unblessed, navigating the treacherous terrain with only caution and cunning.

As Bastian teeters on the brink of death, a mysterious voice intervenes, offering him a lifeline: [Prometheus System Awakened]
Becoming a chosen “Invictus”--a person chosen as the champion of their god, he finds himself in the ranks of legends, having to learn all too quickly to adjust. 
He must defy the odds, unravel the mysteries of Yggdrasil, and face the trials that await beyond the clouds, making either ally or foe of other Invictus, and the gods that dwell in Yggdrasil.

Tower of Yggdrasil: From Zero To Godhood

Though it was a complete abyss, there wasn't an absence of all; a small trail of stone steps led through the pond of darkness.

In her hand, the pale woman manifested an obsidian cane that bore a skull, using it to guide her steps carefully into the realm of death. Every tap of it echoed throughout the boundless void, leaving even that subtle, but only sound to be swallowed by the ever-stretching dark.

It was with a press of her cane did the shadows part to reveal the corpse of the young Invictus.

From the abyss, cold hands stretched out, grabbing hold of the limp body before hoisting it up.

Behind the lifted corpse, a nebulous plant bloomed; of silver petals like the wings of an avian, eyes unveiled upon its form as thorns of bone waved. A giant blossom; an entity of origins riddled in the abyss.

The Mightiest