A whip identical to the one used by Muzan Kibutsuji appeared on Mitsuko's back.
When the Ōku mushi saw the tube whip, it did not understand why it suddenly felt fear.
It was clearly dominating Mitsuko, and it could be said that if Yoshiko wanted to, it could end the battle directly, letting these slugs devour Mitsuko until not even bone fragments were left.
Despite the vast difference in strength, Yoshiko developed a fear of Mitsuko.
Because of the Ōku mushi's fear, the slugs that it controls also dare not approach the Mitsuko.
The Ōku mushi was immediately enraged.
It's a disgrace that something he could crush at any moment could instill fear in it!
"devour him completely!"
As soon as the Ōku mushi gave the command, the splitting slugs swarmed forward.
Mitsuko continuously swung his Nichirin Blade in front of him, combining it with Blood Demon Art and the bamboo whip behind him that moved as if it were his own arm.
With the cooperation of all three parties, the split slug could not get close to Mitsuko for a while.
Meanwhile, Mitsuko is steadily closing in on Ōku mushi.
Because Mitsuko's attention was incredibly focused, he once again entered that profound and clear state of mind.
The internal organs of the Ōku mushi are fully visible.
Mitsuko noticed an organ inside the Ōku mushi, which was filled with countless larvae eggs.
These eggs are constantly hatching inside the organs, but then splitting off from the body surface of the Ōku mushi.
Mitsuko suddenly realized that this must be the secret behind the Ōku mushi's ability to infinitely split into slugs.
Destroying this organ will stop the pygmy worm from further dividing into slugs.
Mitsuko increased his attack frequency and quickly broke through to Yoshiko's side.
Mitsuko plunged the Nichirin Blade into the body of Ōku mushi once again.
Unfortunately, the length of the Nichirin Blade was insufficient to attack the organs inside the massive Ōku mushi.
The wound inflicted by the Nichirin Blade instantly filled with sharp teeth, which bit towards Mitsuko's arm.
Having anticipated this, Mitsuko wanted to quickly draw her Nichirin Blade.
Although Mitsuko managed to pull his hand out, his sharp teeth remained firmly gripping the Nichirin Blade, preventing him from drawing it.
Furthermore, numerous slugs split off from the body of the Ōku mushi and crawled toward the Mitsuko.
Mitsuko could only release his Nichirin Blade to avoid the swarming, split slugs.
Seeing that Mitsuko had abandoned her Nichirin Blade, Ōku mushi taunted, "You've even given up your weapon; what can you use to fight my children now?"
Mitsuko frowned deeply.
Without the Nichirin Blade, Blood Demon Art was ineffective against the massive Ōku mushi.
Although an additional attack method using the whip has been added, this method doesn't seem to be of much use.
Because even a tube whip only one meter long cannot attack that organ inside the Ōku mushi.
Looking at the sharp teeth biting down on the Nichirin Blade, a brilliant idea flashed through Mitsuko's mind.
However, this idea is too risky; a slight misstep could lead to suicide.
However, given the current situation, Mitsuko no longer has time to consider it further.
Mitsuko took a deep breath, letting the split slugs crawl onto his body and bite him, then rushed to the side of the Ōku mushi and gripped the hilt of the Nichirin Blade again.
The sharp teeth of the Ōku mushi quickly released the Nichirin Blade and instead bit into Mitsuko's arm.
Yoshiko sneered, "So you've run out of tricks and chosen to give up on yourself? That's a wise choice. Don't worry, I'll savor your taste!"
Mitsuko tensed the muscles in his arm, preventing his sharp teeth from closing and biting off his arm.
Then, by continuously pushing forward, the Nichirin Blade, along with the arm, successfully penetrated into the body of the Ōku mushi.
Mitsuko's forehead was covered in cold sweat, and he let out a soft sigh: "It worked..."
Mitsuko's gaze sharpened, and he spread his fingers, revealing a pool of blood in his palm as he probed into the body of the Ōku mushi.
"Blood Demon Art: Cross Blood Burst!"
The blood in the palm of the hand changed into a cross shape, and then a violent explosion occurred inside the Ōku mushi.
In an instant!
The explosion blasted a gash into the body of the Ōku mushi.
The organ, filled with insect eggs, was also exposed to Mitsuko's view.
Mitsuko gripped his Nichirin Blade tightly and slashed at the organ.
Yoshiko immediately understood Mitsuko's intention. Her eyes filled with panic, and she roared furiously, "How dare you?!"
Yoshiko manipulated the slug that was gnawing at Mitsuko's flesh to the extreme, tearing away all the flesh and blood from Mitsuko's arm that was holding the knife.
The blade of the Nichirin Blade struck the organ of the Ōku mushi, but because Mitsuko's arm holding the blade was only bone and lacked strength, she failed to break through the organ and the Nichirin Blade slipped from her hand.
Seeing Mitsuko's Nichirin Blade fly out of his hand, the Ōku mushi hatched a large number of split slugs from its organs, burying Mitsuko and trying to end the battle completely.
Just when the Ōku mushi thought the dust had settled.
The pile of slugs that buried Mitsuko's split bodies suddenly broke open, and a dark shadow flashed by as Mitsuko's whip pierced into the organs of the Ōku mushi.
"Still thinking of making a last-ditch effort? How pathetic..."
The Ōku mushi's words came to an abrupt halt, as it felt paralyzed all over, unable to move, and all the eggs in its organs died instantly.
Mitsuko's murmurs came from the pile of split slugs.
"So that's how it is, there are toxins in the blood of the vasculature...?"
Having just acquired the whip, Mitsuko was unfamiliar with its function and always thought that its only function was to inflict physical attacks.
However, when the tube whip pierced the organ, Mitsuko subconsciously injected blood from the tube whip's blood vessels, successfully paralyzing the Ōku mushi and poisoning the worm eggs in the organ.
"It's just toxins, I can break them down right away!"
If a demon wants to kill another demon, it has no other way but to devour the other demon and humans.
Mitsuko's poison could not kill Yoshiko, who was also a demon.
The Ōku mushi tried its best to break down the toxins in its body.
But as time went by, Yoshiko's expression suddenly turned ugly.
Cannot be decomposed!
The Ōku mushi can sense that the toxicity of this toxin is actually quite weak, but it just can't break it down.
This means that the Ōku mushi are now at the mercy of the Mitsuko.
But Mitsuko stopped moving, standing there with a blank stare.
In Mitsuko's mind, memories that did not belong to him reappeared; they were the memories of Yoshiko before he became a demon.
The Ōku mushi from the human era was named Masato Uraya.
Although he is human, his behavior is no different from that of an animal.
Masato Uraya has been fascinated by insects since childhood, to the point of obsession.
During a time of war and famine, many of the insects that Masato Uraya raised required meat.
To ensure that the insects he raises can survive.
Masato Uraya actually chose to kill someone, cut open the corpse's abdomen, and feed the worms inside.
Even after the war subsided and a bountiful harvest arrived, Masato Uraya still chose to murder humans and continue feeding insects with their corpses.
Until finally becoming a demon.
Mitsuko snapped out of her reverie about the human era of the Ōku mushi.
Mitsuko picked up the Nichirin Blade that had fallen to the ground, leaped onto the head of the paralyzed and immobile Ōku mushi, and stood face to face with the upper half of Uraya Masato's body.
Seeing the sharp edge emanating from the Nichirin Blade, Ōku mushi was frightened.
"We're all demons, there's no need to be so ruthless. I can give you anything you want..."
However, before Yoshiko could finish speaking, a flash of light appeared, and Yoshiko felt a sharp pain in his neck.
Mitsuko sheathed his Nichirin Blade and coldly replied, "All I want is your life!"
The head of the Ōku mushi fell to the ground.
The body of the Ōku mushi, whose head had been severed by the Nichirin Blade, began to gradually turn into ashes.
Yoshiko stared intently at Mitsuko, unable to understand why she had lost when she had the upper hand in the battle.
Suddenly, Ōku mushi seemed to see the shadow of Muzan Kibutsuji, who had turned him into a demon, in Mitsuko.
The Ōku mushi wanted to say something, but half of its head, including its mouth, had turned to ashes and it could no longer make a sound.
Finally, carrying with it what it wanted to say, it descended into hell.