This kind of pain is familiar to him, every time he was tied to the hospital bed in the research institute when he was a child, his whole body had to bear this severe pain as his strength went viral.

At that time, the dark blood eroded his body inch by inch, taking over his skin and flesh, and reorganized again and again until he was able to coexist with the demon blood as a human body.

At this time, Black Feather's body was a contest between toxins and dark blood.

"It is estimated that my seal won't last long, and when he surfaces from the poison pool, I will solve his ......"

Wu Xuanyuan slowly emerged from the poison pool again, standing steadily on the surface of the poison pool with his feet.

His expression finally became serious. After all, there are not many people on the mainland who can force Wu Xuanyuan into such a situation.

At the tip of his staff, the head of the snake opened its mouth, containing a skull, and streams of corpse poison poured out of the skull's mouth and eyes.

"Rotting bones and corpse poison!"

A deadly poisonous gas came towards the black feather.

The hydra circles from the front, back, left and right, restricting the black feather's range of movement. Black Feather didn't dodge or dodge, he quickly moved forward in the face of his attack, dodging the poisonous gas several times in the air, and the trident came to Wu Xuanyuan again.

"You're too tender!"

Wu Xuanyuan said hoarsely in a low voice, while grabbing Black Feather's staff with one hand, and spreading the vicious poisonous claw with the other, pulling Black Feather in his direction while pushing out the poisonous claw.

Black Feather's right hand staff was tightly grasped by Wu Xuanyuan, and his left hand met Wu Xuanyuan's poisonous claw and made a move "Time and Space Blast". The power of the blast pushed the two of them back for a distance, and Wu Xuanyuan's fingers were also blurred with blood because of the blasting, and several long black nails were broken, but after he withdrew his hand, he still maintained the posture of a poisonous claw, and his palm turned.

"Ninefold Corpse Poison!"

The nine poisonous snakes surrounding him behind Black Feather attacked here at the same time, and when the snake head moved rapidly in the air, its mouth turned into a skeleton form, no matter how Black Feather dodged, ran or leaped, the huge snake body always surrounded Black Feather, gradually converging into a ring around his waist, and suddenly, the snake head burst, and the corpse poison in it burst out.

"Not good!"

Black Feather was in the center of the poisonous gas, holding his breath, but the corrosive venom contained in the corpse poison instantly enveloped his body, pus oozed from the blood marks on his skin, and the scarlet eyes covered with blood vapor gradually lost sight.

He knew that if he missed the opportunity to attack, the poison would quickly corrode his whole body after this retreat, and maybe he would never be able to get back up again.

Now his heart is filled with the pain of losing the god of slaughter, and he is bent on revenge, and he has long put his life and death on the line.

The only thing he knew was that he would never let Wu Xuanyuan out of this forest alive. His legs were losing sensation, and he poured the last of his dark blood into the two wings behind him, hovering low.

In order to prevent the toxin from entering the heart, he had to burst out more dark blood to dissipate the corpse poison, and with this in mind, he had recklessly opened the fifth seal.

"The Fifth Seal - Open!"

The poisonous mist that was close to Wu Xuanyuan was suddenly dispersed after the eruption, and Black Feather stretched out his right hand from the poisonous mist, and the flower-shaped birthmark in the palm of his palm was clearer under the baptism of blood, this time, he did not take the staff, but directly dislocated in time and space, rushed towards Wu Xuanyuan, grabbed his collar tightly, and glared at him with angry eyes like a demon who wanted to drag him into hell before he died.

"Demonic Power - Annihilation of the Black Hole!"

The demon behind him suddenly merged with Black Feather, making him invincible.

Wu Xuanyuan didn't have time to dodge, his eyes suddenly turned black, only to see Black Feather's two huge demon eyes hanging high in the air, and the pupils radiated brownish-yellow light.

Before that, he had never been afraid of Black Feather's demonic power, and that was because his mana was much higher than Black Feather.

But at this moment, when Black Feather opened the fifth seal, the Demon Eye blocked his vision and his prediction of the future, and he had a premonition that he would not be able to escape for the first time.

The black hole was centered on the palm of Black Feather's right hand, and suddenly spread, becoming a huge black hole comparable to the body of a demon, encompassing the surrounding trees and low hills, as long as Black Feather didn't let go, no matter how great Wu Xuanyuan's ability was, it would be impossible to escape.

Gusts of black wind attracted everything towards the core of the black hole, the sky was dark, the sand and rocks were flying, the trees were uprooted upside down, and the clouds in the sky froze, driven by the power of the black hole to stir up a whirlpool.

Wu Xuanyuan resisted with all his strength, he grabbed the wrist of Hei Yu's right hand tightly with both hands, and grabbed the blood marks on it, wanting to get rid of the attraction of the black hole's core. Unfortunately, the power of the black hole was too strong, and the core exploded close to his body.

And Hei Yu didn't even feel the pain, he knew that his whole body was no longer under his control, and most of the muscle tissue and organs had been corroded by the poison.

At this moment, the black hole had an effect, and in Wu Xuanyuan's mouth, eyes, collar and sleeves, there was a steady stream of green smoke being attracted towards the center of the black hole, and his mana was flowing!

With the mournful screams of the undead, his strength to grab Black Feather's wrist became weaker and weaker,

"You...... You can't digest my poison, boy! Even if you absorb all this, you'll die of all the poison!"

His body leaned back weakly, the green mist rushed in all directions even more wantonly, and the undead fled from Wu Xuanyuan's body as if they had broken the shackles.

Wu Xuanyuan's eyes looked at the sky blankly, and said with a cruel smile.

Indeed, as he said, the power of devouring is powerful, but "poison" is like its nemesis, if it cannot detoxify itself, absorbing toxin is tantamount to suicide.

Black Feather was unmoved. He was extremely calm at this time, his hand tightly clasped Wu Xuanyuan's throat, his eyes were as black as a pool of stagnant water, and he said coldly as if he had been sentenced to death:

"I never thought about going back alive, even if I died, I would take you with me. Wu Xuanyuan, let's go to hell together!"

"You're crazy...... Hmph, I really didn't expect that I would be planted in your hands today. The corners of his mouth suddenly hooked up into a mocking sneer. "It's just a loss of my ten years of cultivation...... You can't kill me......"

Suddenly, he stood up, his pale and cold face facing the black feather, and the toxin in his hand was condensed again, and the green venom oozed from between his fingernails, covering the entire palm, and dripping down the palm.

"If you want my poison, I'll give it all to you!

This palm slammed into the core of the black hole.

A burst of violent poison poured into Black Feather's body along the black hole, and Black Feather spurted out a mouthful of blood, and the blood was dark green. His eyes were dark for a while, but he was stubbornly supporting his body, but the core of the black hole was shaking violently, and it looked like it was about to explode.

Even if he couldn't be completely devoured, with the power of this explosion, it was enough to make Wu Xuanyuan's soul fly away.