He's in Marvel, working behind the scenes.

But Patton quickly snapped out of it, staring intently at the Upper Moon demon, ready to draw and shoot an arrow at any moment.

At the same time, he was secretly groaning in his heart.

Although he was extremely confident in his strength, considering himself to be among the absolute pinnacle of humanity, his opponent at this moment was not human, but one of the most elite among demons.

On my own, I absolutely cannot beat him in a one-on-one fight.

As for this boy

Patton looked at Zenitsu Agasa's back, which was ramrod straight, giving people a sense of composure and reliability.

Having witnessed his lackluster performance in training and his completely inadequate mental fortitude, even though he seemed much more reliable now, he couldn't have any expectations for the boy.

Come quickly and help!

Barton refocused his attention on the Upper Moon demon, his mind extremely concentrated, watching him cautiously, ready to shoot the demon at the slightest sign of trouble.

Yes, Patton had no other source of confidence, but he was extremely confident in his eyesight and nerve reflexes.

Even if the enemy can go supersonic, he can still hit them accurately.

The only uncertainty is that the room is too small, and the two sides are only about five steps apart.

If a battle breaks out, the speed at which the opponent charges towards him might not be as fast as he can draw and shoot an arrow.

Even so, he had no choice but to take a gamble.

Barton's entrance briefly diverted the Upper Moon demon's attention, but it quickly returned to Zenitsu Agatsuma with a sneer.

"Long time no see, you're still as incompetent as ever."

The Upper Moon demon greeted Zenitsu Wagatsuma as if he were an acquaintance, but his words were full of contempt.

"Have you become a pillar?"

"Have you mastered any form of Thunder Breathing other than the first form?"

"you"

"You were just a filler character who was stuffed into the Upper Moon, and you think you're so great about yourself!"

Zenitsu Agatsuma interrupted the Upper Moon demon and responded with equally sarcastic words.

Unlike the Upper Moon demon's tone, which was clearly deliberate and derogatory, Zenitsu Agatsuma's tone was very calm, as if he were stating a fact.

This stunned both Barton and the Upper Moon demon.

They never expected that the boy, who had always been timid and cried when faced with difficulties and powerful enemies, would utter such sharp words.

The Upper Moon demon snapped out of his daze and laughed, "Oh, your tongue has certainly improved quite a bit!"

Why did you become a ghost?!

"Haha, you think you can beat me?"

"As the successor of the Breath of Thunder, why did you become a demon?!"

Zenitsu could no longer contain his anger and shouted at the Upper Moon demon, "It's because you fell into demonhood that Grandpa had to commit seppuku!"

At this moment, Barton finally understood why Zenitsu Agatsuma, who had always been timid and cowardly, had acted so strangely after arriving at the Infinity Castle.

He had already prepared himself for this.

Power and immortality are irresistible temptations for anyone. Even if the other party is an enemy who killed family and friends, some people will not be able to resist the temptation and defect to the enemy.

As an organization that fights against demons, the Demon Slayer Corps naturally has extremely strict selection criteria to avoid such situations. Not only do they have to undergo physical training, but their personal qualities and family backgrounds are also thoroughly investigated.

Even so, the instructor or guide in charge of the training must act as a guarantor for them.

If the apprentice you taught falls into evil, you must atone with your death.

Under such strict rules, each mentor naturally devotes himself to the selection and teaching of his apprentices, without the slightest negligence.

Even so, unexpected events can still occur.

Zenitsu's master was the previous Naruto Pillar, one of the few Pillars who lived to old age and retired to the second line.

However, another disciple he taught, Inatama Kaigetsu, could not resist the temptation and voluntarily fell into demonhood.

As the master, he chose to commit seppuku as an act of atonement.

Furthermore, he chose to commit seppuku alone in a secluded place, enduring the agony of bleeding to death in solitude.

Zenitsu, don't let anger cloud your judgment.

Patton reminded him from the side.

But Zenitsu seemed not to hear him, and continued to roar at Kaigetsu.

"What's it to me!"

Facing Zenitsu's furious questioning, Kaigetsu remained unfazed and declared, "I only follow those who have discerning eyes! That old bastard's death was a relief; he was blind to have made me a successor alongside a piece of trash like you!"

"Oh"

Zenitsu Agatsuma clenched his trembling hands, his tone shifting to one of disdain and self-mockery: "If I'm useless, then you're trash. Grandpa had it pretty tough too, having to choose between me, who only knows the First Form, and you, who doesn't!"

"Don't you dare lump me in with a piece of trash like you!"

Zenitsu Agatsuma's words seemed to strike a nerve with Kaigetsu, enraging him so much that he unleashed his fury, unleashing the "Third Form of Thunder Breathing: Far Thunder!"

Inatama Kaigetsu drew his sword with a speed beyond human visual perception, instantly unleashing several elongated sword energies that resembled bursts of black lightning.

Barton kept a close eye on Kuaiyue, and the moment Kuaiyue became agitated, he anticipated that the guy would attack in anger. Therefore, he took the first step, drew his arrow, nocked his sword, and shot the arrow.

But we were still a step too late.

He had barely nocked an arrow when the black lightning sword energy whistled straight at him.

not good!

Barton sensed something was wrong and immediately tried to abandon his attack and roll away to dodge.

Unexpectedly, Black Lightning suddenly vanished before his eyes.

what happened?

Barton was stunned for a moment, and then he saw Zenitsu Agatsuma appear behind Inatama Kaigetsu, with blood streaming down his already drawn Nichirin Blade.

Meanwhile, Inatama Kaigetsu clutched his neck in disbelief, blood gushing out.

Looking at Zenitsu Agatsuma's previous spot, there's no one there anymore.

All that remains is the surging airflow after its high-speed movement.

Between where Zenitsu Agatsuma was standing and where he is now, one can still see residual electric current flowing in the air.

Holy crap!

Patton couldn't help but swear.

Is this guy, who looks so weak and pathetic, really that strong?

Patton knew the saying that you can't judge a book by its cover, but after spending several days with this guy, he still couldn't figure out what made him so strong.

I've always had some doubts about Kagaya Ubuyashiki's assessment of this guy.

After arriving in the Infinite City, she was always worried that he wouldn't be able to protect himself, so she kept following behind him.

I never expected it to turn out like this.

"Too slow, garbage!"

Zenitsu Agatsuma turned around, his tone contemptuous, his eyes indifferent, as if he were truly looking at trash. This arrogant, powerful figure was completely different from the weak and useless person he once was.

This left Inatama Kaigetsu in disbelief and enraged.

"How is this possible!?"

"Back then, I thought a terrifyingly powerful being had turned me into a demon, and bestowed upon me even more power as blood, sternly telling me that if I dared to waste even a single drop of blood, I would become a blood flower and be gone forever!"

"It was a kind of power that terrified every cell in my body."

"You piece of trash, all you do is cry all day. No matter how much you improve, you'll never be able to match an Upper Moon demon!"

"And that old bastard actually made me and a piece of trash like you inherit the Breath of Thunder! You and your master both deserve to die!"

As Inatama Kaigetsu spoke faster and faster, his anger grew. Finally, at the peak of his rage, he drew his sword and unleashed a five-hit combo from five directions in an instant, each strike accompanied by black lightning.

Thunder Breathing Second Form: Inari Soul!

Zenitsu Agatsuma only knows the First Form: Thunderclap Flash.

A sword-drawing technique that is extremely fast.

This type of ability is so fast that it can kill someone before they can react, but it cannot help him defend against attacks in such a situation.

Therefore, despite his superior reflexes and speed compared to Kuaiyue, he was unable to dodge or block all of them, and a cut was made on his cheek.

However, even though it was just a small cut, it caused Zenitsu Agatsuma a lot of pain.

Because Kaigetsu's sword is imbued with Blood Demon Art.

Kaigetsu's Blood Demon Art makes the Nichirin Blade even sharper, and the lightning generated by his breathing technique turns pitch black. The slashes can tear through an opponent's skin, and the intense heat from the lightning spreads along the wounds throughout the body, causing the opponent excruciating pain akin to being burned.

Yes, the flames, lightning, and gales produced by the breathing technique are merely sword energy similar in nature to the moves and elements, and do not actually arise from natural elements.

However, with the enhancement of Blood Demon Art, Inatama Kaigetsu's Thunder Breathing unleashed true lightning.

Even in excruciating pain, Zenitsu's movements did not falter in the slightest. While swinging his sword at his senior brother, he shouted to Barton, who was standing behind him and about to launch a sneak attack with an arrow, "Mr. Barton, this is a feud between him and me. Don't interfere!"

Upon hearing this, Patton hesitated.

He once worked in a circus, where he apprenticed under a swordsmanship master and an archery master.

But in the end, one of his mentors turned out to be a vicious, inhumane murderer who had taken the lives of many people.

Upon learning this, he killed his own master.

The anger that arises from being taught by teachers to use force to uphold justice and protect the weak, only to find that those teachers are secretly engaging in heinous acts, and from being deceived and betrayed by those closest to us, is so intense that it causes unbearable pain.

Therefore, Patton understood Zenitsu Agatsuma's feelings at that moment perfectly.

But Zenitsu was clearly at a disadvantage at this moment, and if they didn't make a move now, they would both be doomed.

Chapter 135 The Final Battle in the Infinite City: The God of Fire and Thunder (Please subscribe and vote with monthly tickets)