Ember's Blaze: Infernal Radiance by Jade Gretz

Ember, a fiery storm contained within sleek Warframe armor, landed on the scorched surface of the desolate moon. The air crackled with an unnatural heat, a premonition of the inferno that awaited her. This wasn't a battlefield - it was a crucible, a forge where a twisted faction known as the Pyre forged a galaxy-consuming conflagration.

Ember, her fiery hair blazing like a beacon of defiance, surveyed the scene. Towering pyres, fueled by some unknown, unholy essence, painted the horizon red. Grotesque figures, their bodies warped by fire and fanaticism, patrolled the desolate landscape. They were the Pyrocultists – twisted acolytes who worshipped the all-consuming flame.

A guttural chant, carried on the searing wind, sent shivers down Ember's spine. It spoke of an ancient prophecy, of a "World Eaters," a harbinger of the final conflagration. A cold dread settled in her stomach. Were they here for the World Eaters? Was this desolate moon a mere staging ground for a galaxy-wide inferno?

A Pyrocultist, its skin blackened and cracked, materialized from the smoke. It shrieked a challenge, its eyes burning with an unholy zeal. Ember met the charge head-on, her hand igniting into a swirling vortex of flame. The Pyrocultist, engulfed in molten fury, screamed before dissolving into a smoldering ash heap.

But more came, a seemingly endless horde drawn by the heat radiating from her Warframe. Ember danced a deadly ballet, weaving through their attacks, her fiery warfans leaving trails of ash in their wake. Yet, with every fallen cultist, a sliver of unease gnawed at her. These weren't mindless fanatics; they fought with a desperate fervor, as if driven by a force beyond their control.

Suddenly, the ground trembled. A monstrous figure, wreathed in crackling energy, rose from the depths of a molten crater. It was a towering monstrosity, its body a grotesque fusion of metal and obsidian, pulsing with an infernal light. This was the World Eaters, a nightmare given form.

...rest of the story at https://www.deviantart.com/jadegretzai/art/Ember-s-Blaze-Infernal-Radiance-1026932522