The Satan's Nightmare or maybe Illusions

Tartarus, the deepest part of the underworld, is a dark abyss that serves as a prison and dungeon for the wicked and suffering. It is the prison of the gods, demons, titans, and all horrid creatures.

At the very edge of Tartarus, a lone figure covered in purple fog sat on a charred tree, perched at the edge of a cliff. Below, a hideous monster limped and crawled in a river of blood and gore.

"Are you done? Let's get started... Satan," the purple fog dispersed, revealing Regal, who stood up.

"Who do you think you are? And you dare call me Satan... Human, you will die," the monstrosity growled while standing up.

"Alright then, Beelzebub it is," Regal nonchalantly corrected himself as he jumped down, landing softly. He looked at the monstrosity Beelzebub had become; it was almost 10 meters tall. "No matter how I look at it, you are no threat to me... yet I feel like you could defeat me if I were to let my guard down even for a moment," Regal complimented, making Beelzebub scowl.

Beelzebub's figure turned dark, and the whole underworld slowly became gloomy and depressed. The Tartarus, which was always red and filled with despair, became dark and still. The howling of the tortured ceased, replaced by silence, while the towering mountains of bone and flesh turned black.

Out of the darkness, a claw raged toward Regal, who only looked at it with amusement and let it pass right through him, turning into a black mist that merged into the darkness again.

Another claw formed, followed by thousands more, lunging towards Regal. He smiled as he looked in a certain direction. The claws passed through him and turned into black mist like the first one.

"These little tricks won't work if I am at my very peak, so why bother?" he remarked, raising his hand as a certain claw approached.

BAM!

Regal made contact with the claw, and it turned into wriggling flesh that disappeared into the darkness.

Regal shook his head and blitzed toward the direction he had been looking, slamming his fist down and creating a cavity that exploded with debris, blood, gore, and everything Tartarus was made of.

Regal turned around and waved his hand, making the claw illusions disappear, leaving only the real attack behind, which did nothing. "You know, your nightmare and illusion are very annoying. I can't tell the difference between them... Makes me wonder if I am in an illusion or a nightmare of yours?" Regal grinningly asked, making the shadowy figure in the darkness flinch.

Regal's whole body glowed brilliantly red.

BBOOOOOOMMM!!!!

The whole of Tartarus shook. The darkness crept away, and the explosions disappeared.

Regal sat on the same tree as before, with Beelzebub still crawling in the river. "An illusion..." Regal clapped again.

BBOOOOOOMM!!!!

Tartarus shook again, but this time something strange happened. It wasn't a new explosion but the previous one, and Regal was standing on the shattered ground, looking at the shadowy figure hiding in the darkness, desperately running away from the explosion that was Regal.

"So, I can't even tell if this world I am in is fake or real now... This became more interesting and annoying... But my mana decreased... by half? I only put 10% there, so this world is fake and all the worlds are illusion... But how did you manage to bring me into an illusion without my notice or reaction from Ophis?" Regal murmured, asking himself more than anyone else.

The explosion around him started to die down, while the shockwaves still continued. Then, everything stopped, and stillness returned.

The monstrous figure of Beelzebub appeared behind Regal and chomped down, but Regal only looked up and beyond it, not caring about anything else.

Beelzebub's monstrous figure turned into black mist and disappeared, but Regal kept looking up. "Arrows of light," he chanted, and millions of arrows appeared at every corner of the visible Tartarus, illuminating the underworld's depths with an eerie brilliance.

Regal pointed upward, and the arrows launched, but the next second, the world turned dark, and the arrows were nowhere to be seen.

Regal smiled. "You know, the maximum number of arrows I could have made was around 10,000? But I made millions with just a simple chant without my mana leaving my body... That alone tells me a lot about you, your limits, and the illusions. But unfortunately... you are the nightmare... so it's pointless," Regal spoke more to himself than to anyone else.

Regal looked at the darkness with a frown. "I will start getting serious now... And if you only play tricks... it will make my wait meaningless," Regal muttered, but it thundered throughout Tartarus.

Regal's eyes glowed purple, and Tartarus shook. This time, it wasn't just an illusion but reality. "You never put me in the illusion... but the world around me... so, everything I do will affect the reality we are bound in. But what I am, you will see as your nightmare, which followed you from the day Lucifer, your first friend, was killed!" Regal exclaimed with amusement as he finally saw through Beelzebub's illusion, which was in fact a nightmare.

Regal raised his hands. "Shattering world," he chanted, and the world shattered into glass fragments, falling slowly yet still resisting.

They revealed the darkness still hiding behind, with the real form of Satan concealed.

(Image of Satan)

"Found you," Regal muttered and blinked in front of Satan with a smile. A small bright white ball formed with Regal's magic and dimmed in brightness.

Satan tried to disappear, but it was too late.

WHOOOOOSSSS!!!!!!

The small ball exploded into a white light that consumed everything, including every corner of darkness. The disappearing figure of Satan was also consumed by it, and the next moment, the entire world they were in turned white.

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Plz read: Game Between The Greatest Anomaly And An Omnipotent Being!