OP Sister Chapter 437: A Demonic Battle

Listen While Reading: Grudge fight
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“HAAAAHHH!”

With a mighty roar that sent shockwaves rippling everywhere, allowing him to unleash his power unbothered—as any attempt to get closer would end with his foe being thrown away—the Heavenly Demon’s body suddenly grew three times as large, more muscular than ever before.

His wounds turned into scars, and his missing wing was remade out of his sheer Ki power, resembling a blazing wing of red and black. Even his broken beak was remade this way, reforged from darkness. 

“How amusing! You’re not a Demon like me, and yet your power… It is so similar to ours; I am simply at a loss for words! Now I definitely want you in my pet collection, hahahaha!” 

The Demon quickly stopped sitting cross-legged as he laughed. He realized the Heavenly Demon was going to get even more serious now, so he prepared to fight back.

And yet—

FLASH!

The Heavenly Demon appeared above him within a split second. The Demon’s eyes widened—all of them. He had barely seen him coming; perhaps he had relaxed too much, underestimating him in the end. 

“UGH?!” 

The Heavenly Demon punched his nose with all his force accumulated into a single point, releasing a massive explosion of black, red, and purple flames! The Demon’s head ended up twisted in the opposite direction, breaking his neck in the process. He was sent cascading down with immense force, his teeth flying away from his broken jaws. 

SPLAAASH!

He fell into the oceans, shaking them with immense force, generating a gigantic, turbulent whirlpool as a massive nuclear-like explosion erupted right afterward. 

BOOOMMM!!!

The Heavenly Demon’s punch carried not only physical might but also the spiritual force of the Heavenly Demon, generating a massive explosion upon contact with his foe. This slightly delayed attack was a powerful ability, allowing him to surprise foes and even giving him the ability to accumulate damage and then release it as several explosions at the same time. 

“This is a new technique of mine; did you enjoy getting your damn skull broken?” The Heavenly Demon smiled proudly. “I call it {Cursed Fist Explosion}!” 

As he laughed, the seas trembled, turning completely black. From within the black seas, a huge crimson eye opened, glaring at him. Its immense presence generated powerful pressure, silencing even the Heavenly Demon after that. 

RUMBLE!

The black seas then swirled together, lifting into the skies. The Demon he had just punched emerged from within, sitting over the black, slimy, miasma-like water, looking like he was enjoying it despite having his face slightly swollen and his broken nose bleeding.

Indeed, his handsome face had been absolutely ruined, and the pain must have been great, yet he kept smiling, only making the Heavenly Demon more furious than anything else! 

“Hahaha! Amazing! Show me more! I like my pets as fierce as possible!” 

The King of All Demons spread out his arms, his palms opening to reveal the eyes within them beginning to glow brightly. His powers began to manifest fully.

The Heavenly Demon, as he heard those words full of provocation, grew angered, gritting his sharp beak and gripping his fists tightly.

His Aura constantly swirled and transformed, resembling a gigantic black specter behind him, which grew into the shape of a multi-armed, multi-headed crow demon carrying several weapons.

Behind the specter, thousands of wailing souls appeared—not real souls, but the representation of the tens of thousands of foes the Heavenly Demon had fought and killed. Their screams reverberated, as the Heavenly Demon even made the agony he inflicted upon others his strength as well. 

“You really don’t understand, huh? I’m not going to become your pet, shithead!” 

As he responded with anger, he rushed toward the King of All Evil on his own accord, surprising even the other demons working for the King of All Evil. He was someone so brave that he went against this monster of a King without even caring at all about his own life, nor carrying a hint of despair within his eyes. 

“That bastard… is he really someone from this lowly world?!”

“I can’t believe a world that was forgotten even by its creator would hold such a demon!”

“But he isn’t a real demon to begin with!”

“Even then…! Hahahaha! He’s amusing!”

“As if he could ever triumph against our King anyway! His struggle is futile!”

“Who knows? He’s the only one who has held this long against him!” 

As the demons whispered with one another while glancing at the battle, the powerful black aura of the Heavenly Demon clashed against the fiery red aura of the King of All Evil. The sole clash of their enormous auras generated a massive explosion, shaking the entire world of Bestia and spreading cracks through space everywhere.

In that moment, in that split second as both faced one another, as their eyes met, their fists moved at lightning speed, aiming to strike the other’s eyes, neck, and chest. 

The immensely dexterous and masterful martial arts of the Heavenly Demon clashed against the King of All Evil’s unique fighting style and tremendous brute force.

Explosions of blood and flesh reverberated through the skies. Each time their fists clashed, part of their skin was torn off, and even their nails broke apart. 

“This damn bastard is immensely strong, but he lacks technique! Despite how old and ancient this monster could be, he probably never bothered to learn actual martial arts. His movements are all full of weaknesses and openings…! But the thing is…!” 

The Heavenly Demon clashed against the King of All Evil, his movements precise and dexterous. His attacks reached and impacted the Demon with immense power. He punched his chin, and before the Demon could react, he reached his stomach and kicked him down. Once he was thrown into the seas beneath, the Heavenly Demon rushed down and attacked him with a barrage of punches, hitting his eyes, neck, and stomach while trying to break through his chest and destroy his heart. 

BAAM! BAAM! BAAM!

His attacks were immensely strong and precise, yet… the monster he was fighting wasn’t a cultivator, nor someone from any Murim. Technically, he wasn’t even considered a “person” by many.

He was a monster. 

“AHAAAA!” 

He laughed, pushing his claws upward as he fell. The Demon’s claws, coming from all four of his muscular arms, rapidly moved like blades at a speed the Heavenly Demon could simply not respond to in time. 

“UNGH?!” 

SLASH! SLASH! SLASH! SLASH! SLASH! 

Before he could react, his entire body ended up covered with several deep cuts, bleeding all over without even being able to defend at all! 

“He might lack technique, but he makes up for it with his incredible physical prowess and supernatural abilities!” 

“HYAAAHA!” 

With a shit-eating grin, the King of All Evil moved forward, kicking the Heavenly Demon in the face and pushing him all the way into the skies. He chased after him, spreading out his wings, revealing several crimson eyes across them. 

From each eye, dozens of red laser beams reached the Heavenly Demon, who rapidly conjured several shields and barriers with his Aura, using his Spectral Guardian to protect him from an endless barrage of explosions! 

BOOM! BOOM! BOOM!

Crack, crack…!

CRASH! 

However, his barriers easily shattered into pieces like glass. His power was never shaped to give him great defenses, after all! The Heavenly Demon grew stronger and developed all of his techniques toward complete offense. 

“Hey! Aren’t you going to fight back?! Didn’t you say you were going to show me something?!” 

The King of All Evil laughed, reaching the Heavenly Demon and swinging his tail against him. The Heavenly Demon knew he aimed to inject him with some poison with that stinger, quickly striking it with his left hand, with a special technique! 

His hand was shaped like a black sword, and his aura wrapped around his hand resembled that, slicing through the immensely hard flesh of the Demon and cutting off his tail in the process. 

SLAAASH! 

The Demon groaned in pain as the Heavenly Demon grabbed the tail, after cutting the stinger off, and then pulled the Demon right toward him, punching his face with as much force as he could with his other hand. 

BAAAMMM!!! 

An explosion of black, purple, and red flames erupted from the blow, sending the Demon flying away with his face once more destroyed.

The Heavenly Demon glanced at his hand, however, realizing he was missing two fingers. His scales and feathers had been torn off, and there were also biting wounds. 

“That feral bastard bit my damn hand!” 

Even in Bestia, a world of beast people, the Heavenly Demon had never faced someone so feral as to bite his damned hand when they fought. 

“Hahahah…! That hurt a lot, you know~?!” 

The Demon floated in midair, his disfigured face slowly beginning to recover. He had a strong regeneration effect all across his avatar. 

“But is that everything you can do? Then become my pet, and let’s be done with it…!” 

“Nah, that’s not everything I can do.” 

The Heavenly Demon smiled back at him, closing his bleeding fist. 

“{Cursed Fist Explosion: Release}” 

“Ngh?!” 

Before the Demon could speak another word, he felt his entire body inflating. Each punch and blow he received across his entire body activated a “curse” the Heavenly Demon had left imprinted into the wound.

As he released this power, the curse exploded into flames, injected directly inside of his damned body.

The result? His body started bubbling and bulging, as countless internal explosions began to erupt within him consecutively! 

BOOM! BOOM! BOOM! BOOM! BOOM! BOOM! 

“UUUAAAGGH…!” 

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