"A heavy rain fell, accompanied by the steady footsteps of a man. Each step was labored, his feet sinking into the mud, while his breath came heavy with pain.

I worked in a mining site, scraping by for shelter and food for my family. Above, a battle raged in the sky, sending tremors through the earth and unleashing various disasters upon us.

This world is filled with heroes and demon lords, each wielding power capable of reshaping heaven and earth, often at the cost of countless lives.

Despite the dangers, I continued my work. After laboring through the chaos, I returned home, only to find it reduced to rubble by the aftermath of the battle.

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Approaching the wreckage, I saw the lifeless bodies of my wife and daughter. Emotionless, I gazed upon their corpses, resigned to the familiar pain. I knew what came next – days lost to grief, followed by a thirst for revenge.

Since I couldn't identify the perpetrator, I resolved to take vengeance upon all heroes and demon lords. With a grim chuckle, I prepared for the slaughter.

After burying my family, I embarked on my quest, summoning a crack in space that led to my inventory. From it, I retrieved my robe, crafted from the scales of countless dragons, capable of changing to suit my desires. Dressed in aristocratic attire, I called forth my weapon – 'GREG.'

Time seemed to halt as particles danced before my eyes. With a thought, they coalesced into a liquid metal, forming a formidable sword.

With my weapon in hand, I set out towards the warfront, utilizing 'SHIFTING INDEX' to hasten my steps.

Meanwhile, heroes and demons clashed, unaware of the impending arrival of death."