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He burned everything...
All the memories of his childhood, his happy moments, the people he cherished most, and his entire legacy.
He burned everything...
He wanted to collapse on the floor and weep, he truly wanted to do that, but this was his only chance to kill him.
Albedo had said that these beings come from the abyss, using the shells of dead people as tangible shells to manifest themselves, and this one, in particular, had chosen a very special corpse to do so.
Hatred coursed through his veins and burned in his heart. He planned to burn him as many times as necessary to stop him from reviving, though he would have to be careful not to be consumed by the flames himself, since he couldn't regenerate.
Diluc lunged forward with his greatsword ablaze, ready to reduce everything to ashes. His movements were those of a wild animal, fighting with no sense of combat, driven more by the desire to kill. He planted one foot and swung his sword, intending to slice him in two, but the other man blocked the blow. Diluc then dropped the weapon with one hand and unleashed a burst of flame to kill him. He hit his target, but the burns regenerated automatically, so he decided to keep pressing the attack until he finished him off.
Based on Bennett's information, he knew they could die if destroyed down to their cells, leaving no trace of their existence. That's what he would have to do: keep burning him. And burn it, and burn it, and burn it, and burn it, and burn it, and burn it, and burn it, and burn it, and burn it, and burn it, and burn it, and burn it, and burn it, and burn it, and burn it, and burn it, and burn it, and burn it, and burn it, and burn it, and burn it…
He burned everything...
down to ashes…
even the remaining dignity of the person I admired most…
He
Burned
Everything
Those were the only thoughts swirling in his mind, so much hatred and murderous instinct that he couldn't see the blow coming toward his face, a blow from a fist that wasn't meant to kill, from a hand that had taught, that had helped, and that had once protected him, now being used like a puppet by the abyss.
He couldn't remember, he didn't remember having so many cuts, he didn't remember having so many bruises, he didn't even remember being able to breathe through the blood in his Lungs, he didn't remember being... burned.
Was this his end? So much effort and blood in pursuing him, only for him to seek him out, luring him in a most horrific way. Let the archons go to the last circle of Hell if they thought this was a funny joke.
His blood burned like crimson flames. He wanted to kill, he only thought about killing. When did this happen? He was just a man who ran a winery. Since when was he someone without reason or logical thought?
Right... since he burned everything.
This is what Kaeya meant. He feels the abyss calling to him, to burn everything.
He burned everything...
He will incinerate him until not a single atom remains, and he will make him burn during the process so that he experiences the heat of the circles of Hell.