SPOILERS FOR BLEACH TYBW Chainsaw Man
Prologue
It was cold, unfathomably so. Yamamoto's body, which had survived harsh torment before, had quickly frozen and gone numb. He felt his breath labor as he felt the soul-splitting pain as he forced his dying body through the blizzard.
"Zanka..." he gritted out as he held firm his blade. "No Tachi... West...!"
He felt his power swell and burn everything around him as his zanpakuto cloaked his form. The flames licked the freezing ground, melting the solid ice with impunity.
Yet, the cold only abated lightly.
As he walked, he heard the sound of his steps freezing away. The heat of the sun icing over when it faltered.
So this is hell, he thought to himself grimly as he continued to trudge forward. He found himself on an incline, the uphill march a hell in itself. He felt his frostbitten legs strain themselves, their blacked form signifying their decay.
All it did was fuel his flame of determination, his furnace of resolution. He will not succumb to the cold, his pride determined that.
Pride for what though?
He felt himself stagger, his footing having slipped for but a moment in the slippery snow. Yet, he maintained his course, trudging ever further ahead. His elder eyes held steadfast, determined to scale what he now asserted to be a hill.
"Welcome home..." a husky, shivering voice called distantly. It was indistinguishable from the raging winds burning past him but the faintness betrayed it from its kin.
"Show yourself!" he declared with a mighty tone. His voice raged and quaked the howling winds, making them hesitate with the power he sprouted.
He had authority, authority to decide and judge. From what did he derive it though?
Simple, power.
He was power incarnate, the inferno who consumes all without distinction. His flames, which had only licked the sheets of snow, burst forth with righteous fury, obliterating everything.
"Flame Devil."
Yet with everything burnt away, all he could see was the darkness. Yet, he held no fear of what he did not see. Nay, he felt his entire being become fired up as a well of anger began to rise within him.
"Darkness Devil," he growled as he stabbed his blade into the ground. No flame burst forth from his blade, no power erupted forth. Only destruction was allowed.
He felt the entire ground crumble and burst forth, an entire chunk of the world eradicated in a single moment. "Zanka no Tachi East," he declared as he swung upwards.
The entire world quaked at his power as the heat of the world's core was given a reprieve from the pressure. Then soon, magma erupted with fury, spurting forth in a massive volcano.
Then, he was given light in the darkness, his eyes now freed from the grasp of the primal devil. He looked around, finding a desolate wasteland. He then looked to the sprouting magma and with a dismissive swing of his sword, he eradicated that too.
After dealing with the natural catastrophe, he began to ascend the closest hill. His bare feet graced the hardened obsidian, its sharp edges prodding his frostbitten skin. This body is dying... he noted grimly as he clenched his fist around his blade.
He stood upon the top of the hill with a limp. His eyes scanned the area before locking upon the standing corpse at the foot of the hill. Its many eyes looked upon him with a stare.
"Darkness devil..." he murmured as he flicked his blade. "You have grown insolent..."
"And you, old," the monstrosity replied evenly as the shadows began encroaching upon the edges of the light. Tendrils of its power snapped cautiously at the ever-brilliant flames. "Soon, your life as Yamamoto Shigekuni will come to an end. When it is done, I will kill you once more."
The Flame devil merely pointed his blade at its old foe. "So that was my name," he mused as his entire being was consumed in flames. "Tell me, what else do you know?"
A slow, decrypted laugh echoed in the world as the Darkness devil began to walk back into the shadows. "Absolution."
Prologue End
I am gonna claim the first Bleach x CSM crossover, refuse to elaborate, leave, and never return
SaveTheWeak, out.