The World's most Overpowered Side-Character

[There are incoming projectiles]

The system alerted Sol when he arose from the dramatic entry he had made and began walking toward the capital city of Hāl.

"What kind?"

"I believe the term they use for such weapons are ICBM-]

"Inter continental ballistic missiles," Sol continued walking observing in real time as thousands of nukes converged toward him, blocking out the sky with smoke and light. "This is quite stupid of them, with the power these demons have why would they still rely on something as weak as Unconventional Weaponry?" He asked, shaking his head and raising his hand.

Sol raised his eyes and stared upward, waving his hand across the skies in one single motion. "It seems they won't understand just how fucked they are until I've made an example out of them."

[Imaginary tier magic: Magic mimicry]

"Origin Explosions." Sol calmly spoke and the entirety of the sky above him became a landmine of [origin explosion] balls that were already the size of nuclear explosions.

Seeing this, the demons that had agreed to launch, the ones who had watched and laughed in arrogance, and all those who cowered after catching wind of his existence stared mortified as the skies above Sol shattered and the atmosphere was torn asunder when everything went off in an explosion that made no physical sense.

Whether it be the sounds that came from it, the cosmic scale of it, or the way it turned day into night and night into day repeatedly as the sand under his feet shattered after turning into glass repeatedly.

Looking away from the system window in front of her Dina stared up at Hāl in horror as the explosions reached out into the cosmos and turned the vaccum of space into a minefield of moon-sized cosmic explosions as well, amassing and becoming a sizeable percentage of the planet he meant to destroy in the process.

"What is imaginary tier magic?" Arla stared up. "It sounds and looks absurd, and it feels unrealistic."

"I would like to say it was my doing, but as soon as Sol's soul was exposed to divine power; my power, he awakened that nightmarish magic all on his own, no doubt a sideffect of being chosen by the grey, after all, the first one also had powers of that nature, as I said before, his existence is defiance itself; a parody against physics and the laws of the cosmos.

"Imaginary tier magic is exactly what it sounds like." Ikaris answered Arla's question. "Anything feasible, so long as he can see himself doing it, it can become a possibility, which is how he came up with the idea to cocktail divine and demon magic and become what is essentially a perfect copy of the strongest being to ever walk time."

"What?" Dina looked down at Ikaris after the last part of her explanation. "Strongest?" She repeated.

"Granted I said being and not entity." Ikaris clarified. "He is still ways away from the true powers of the Godslayer." She spoke without explanation. "You will see."

*

"It is the end of all of us, we are going to die today, there is nowhere we could go, it is all my fault, had I left without Ikaris none of this would have happened!" Sitri had her hands covering her ears and crying as the skies screamed from the atmosphere slamming shut repeatedly and opening again, sucking up the desert and creating weather anomalies all across Hāl.

"I admit he is quite strong for a divine being." Another demon-god next to her nodded stroking his chin with a smirk. "But do you honestly think he is stronger than all of us, have we not all created similar disasters sometime or another?" He asked her, but frowned when she did not even acknowledge him.

Aside from his horns being a shade lighter than Sitri's black horns, this demon was nearly identical to her in both height and appearance.

Her twin brother, and the strongest demon-god under the Entitiy itself which ruled them all; Saleos, prince of Hāl.

They had indeed gathered, thousands of demon gods stood in formation staring at Sol's approac.

And at the very back of this army sat a silent figure shrowded in darkness, staring forward with a tired expression on his face.

"Sitri, your unwillingness to fight disgusts me." The demon-god grabbed her by her hair and raised her off the ground forcing her to open her eyes as she began screaming, but as soon as she did she felt Sol's eyes lock on to her and all her motion halted.

"I'm sorry brother, I brought destruction to our doorstep-"

Sitri tried apologising but suffered a backhanded slap that sent her sprawling on the ground before the army she had influenced into creation because of her endless paranoia and relentless warning over the last feew days.

"Is this weak thing really our princess?" One demon asked another, and together they chuckled when Sitri shakily stood and hugged herself.

"Sitri." Sol's voice exploded across the skies as the last explosion went off and the storms all died, and before man beast or child could utter a single word the princess of demons stood at full attention, sprouted her wings and took off like a bullet toward him.

"What the fuck?" Saleos took off after her. "Hey, what are you doing?" He asked easily catching up and stopping in her way with his hands spread wide. "You are the princess of demons, show some dignity, this whole army amassed to protect you after you said he was going to kill you first, what's the point of you willingly chase him as soon as he calls?" He snarled at her, flashing his teeth rabidly.

"... I never asked for protection, and I do not believe any of you can save me from my demise." Her wings slowly fanned around her to keep her afloat as she rubbed her arm with a downcast expression. "I... He... " She bit her lip and shook her head. "This is my day of judgement for what I did."

"...What exactly did you do that caused this?" Saleos asked her with his expression hardening as before him Sitri had been stripped down to a being who could no longer raise her head proudly, she couldn't even put up a fight in her current state.

"I killed his child."

"You have killed many children in the past, we relish-"

"I killed the child manifest between him and Ikaris, whom I later found out was a Primordial god that ties to the first god of balance, that is why I stole her... I thought father would be pleased, but he refused to even meet her, and then Sol showed up-"

"Gods do not bare offspring." Saleos countered, ignoring everything else she had said. "They can only create life through evolution."

"What I killed was definitely an embryo, brother, she was pregnant with his child!" She shook her head pleading that he listen to her. "Back then, less than a month ago, I was incomprehensibly stronger than he was... But he surpassed me in an instant, his power exploded!" She extended her hands in gesture.

"And it has been explosively growing ever since, this; all of this, it is all my fault, at first I thought that if I died he would stop, but he has come to kill us all; he is Godslayer!" She screamed, and at the mention of Godslayer the air, the planet, the cosmos went silent, and Saleos's eyes widened.

The System had been sure to relay her and her brother's conversation everywhere, everyone heard it, they all saw the fear in her eyes, Ikaris especially held a hard expression as she stared at Sitri's fear with nonchalance and dismissal.

"I'm glad you're aware of what triggered this chain of events."

Sitri's eyes widened as well when she realised that the reason Saleos's eyes had widened was to because of her words, but the appearance of a third party, and before she could even move she started falling to the ground.

[All of your mana has been stolen]

The system informed her as she plumetted out of the sky.

"What?"

Sol's expression held no emotion as he stared at Saleos, he couldn't make heads of tails of what had just happened, but he knew as soon as he saw Sol that the being before him had to be eliminated with the utmost urgency.

Unconventionally it was not a sword or any othereleenweaponnfhat the demon-god pulled, instead a large rail-cannon materialised in his grasp extending all the way to Sol's face and stopping right at his nose where he did not even flinch as he stared down the black chamber as dense mana appeared on the inside and created a crimson glow.

"How unoriginal." Sol stared down the barrel and then raised his hand punching it upwards just as the mana inside of it erupted outward. Even he had to admit that was impressive, the Lazer-focused mana that came from the rail-cannon zipped through the sky and the vaccum of space and tore a gigantic trench into Zola-Prime with zero delay whatsoever, it was instantaneous.

"He reacted?!" Saleos gawked staring under his raised weapon at Sol who stared right back as he approached him slowly. "When did he deflect my arm?"

"You're not ready yet, I don't think any of you are, I want a real fight, I want a real struggle, I want to see your hope become hopelessness, just as you did to me, just as you've done to countless others, I want to see the life drain out of your efforts until all that remains is a husk of your former selves!"

"F-Fuck-" Saleos released his gun, causing it to vanish as a large battle-axe with a thruster on the back replaced it. "Shi-"

At speeds near light, the axe descended with the aid of the thrusters, and Saleos gawked a second time when the axe came to a sudden halt, blocked by Sol who raised his sword against it.

"Go back and prepare for my arrival, I have unfinished business with the one below." Sol appeared before Saleos, eyes wide and burning with divinity and his hand shrowded in [clockwork] mana circles and pressed against his chest.

"I'll be right there."

"Wh-"