Demon Slayer: The Journey That Began When I Became Yoriichi's Sister

A wave of pain, unseen for centuries, surged through his body, forcing Kokushibo to vividly recall the memory of almost being beheaded years ago.

Deeply etched memories flooded back, and the past events gradually resurfaced in my mind.

From that time... no, it should be earlier...

He had always known about Yuko's talent...

The pain of the razor blade is intense, but it is far less painful than the pain of being beheaded.

Yuko was still forcefully pushing the crimson blade into Kokushibo's chest; the blade had already pierced through his flesh.

Surprised by Yuko's speed, Kokushibo stomped his heel hard, veins bulging on his arm, and grabbed Yuko's wrist tightly, preventing her from moving forward any further.

The two held their breath and began to wrestle.

The blazing crimson blade emitted a scarlet light, and as the air distorted, the flesh on Kokushibo's chest writhed with difficulty, attempting to repair the damage inflicted by the blade.

Even items like the Crimson Blade have different grades.

Yoriichi's Crimson Blade, combined with Sun Breathing and his talent, can almost completely block the regeneration of demon flesh and blood, even against Muzan Kibutsuji.

Yuko's Crimson Blade couldn't achieve that level of power, but it could still greatly limit the regeneration of evil spirits.

The Upper Moon demons' regeneration speed is such that, as long as it's not a fatal wound like decapitation, they can recover completely in the blink of an eye. Even if they lose an arm, it won't take more than a breath to regenerate.

Even though Yuko has never eaten human flesh, her regeneration speed is also in that range, though probably not as fast as Kokushibo's.

As Upper Moon One, Kokushibo's regeneration speed is undoubtedly second only to Muzan Kibutsuji.

With the constant erosion of the Crimson Blade, the regeneration of flesh and blood will inevitably consume more physical strength.

Yuko was still far inferior to Kokushibo in terms of pure strength, and the pain from her wrist made Yuko grit her teeth.

During the struggle, Yuko suddenly lowered her head, and her two sharp horns stabbed towards Kokushibo's face.

This kind of trick...

As Kokushibo leaned back, the strength in his arm naturally loosened, and Ikuko, seeing this, used the hilt of her sword to pull it to the side.

"Ugh~" The tearing pain in his chest made Kokushibo groan involuntarily. He simply gave up the struggle with Yuko and grabbed the demon horn on Yuko's head with one hand.

Yu Zi's expression changed slightly, but before she could react, a tremendous force came from her head, and her scalp felt like it was being torn apart. The violent force dragged her and slammed her to the ground on her left.

Having never been grabbed by the horn during a battle before, Yuko was momentarily flustered.

That damn corner!!!

She just knew it! ! !

This thing will get her killed sooner or later!!!

This old man looks pretty old-fashioned, and his moves are so underhanded!

As she lost her balance, Yuko steadied herself. Because she lost her balance to the left, she could only cut through the flesh along Kokushibo's right chest, instead of severing him completely.

Yuko rolled twice on the ground in a disheveled manner before standing up, her scalp throbbing slightly.

We don't need this corner.

It's completely useless and easily becomes a weakness.

……

But Shinobu seems to like it quite a bit.

Moreover, this isn't something she can just get rid of if she doesn't want it; it will regenerate even if she breaks it.

Yuko sighed and looked at Kokushibo with a displeased expression.

Kokushibo stared at her expressionlessly, blood dripping from his chest.

Fresh blood dripped down Kokushibo's skin.

This was the worst injury Kokushibo had suffered in hundreds of years. His right chest was completely cut open, and the regeneration blockage caused by the Crimson Blade prevented him from repairing his body immediately, leaving his entire body covered in blood.

The impact of the Crimson Blade was deeper than he had imagined.

Two breaths have passed, and the injury, which is of this severity, has not yet healed.

But Kokushibo was not afraid; on the contrary, his fighting spirit grew stronger and stronger, a long-lost injury indeed.

Ah, the long-awaited battle.

The reason he spared Akaza's life in the bloody battle was because he believed that Akaza's pursuit of martial arts ideals would bring him joy in the future.

But as expected...

There is no harm without comparison.

Akaza may have potential, but compared to Ikuko, who is already a formidable opponent, he is far inferior.

Sensing that Kokushibo's aura had surged once again, Yuko focused her attention slightly.

Kokushibo's fighting spirit was rising, and so was hers.

Because of her constant hiding, her body has been rusted for hundreds of years.

The battle with Akaza ended too quickly; there wasn't even time to warm up.

Of course, it would be even better if Kokushibo could be that bad.

The two exchanged a glance, both recognizing the fighting spirit in each other's eyes.

Kokushibo remarked with emotion, "Speaking of which, it's been over four hundred years since we've fought like this."

Yuko raised an eyebrow: "Huh? Your memory only lasts seven seconds? Or did your brain get damaged after becoming a ghost?"

"The matter involving You Guo happened only about two months ago, right?"

Kokushibo said calmly, "No, that time I only saw someone going crazy."

To be honest, he later regretted not taking advantage of Yu Zi's weakness to pack her up and take her away.

Ultimately, the reunion was hard-won, and he was somewhat mentally impaired.

Yu Zi took a deep breath, a deathly smile spreading across her face: "You can just wait to die."

Kokushibo smirked: "Heh, you can try."

He suddenly felt a bit like agreeing with Yuko; it was indeed quite comforting to see her angry.

This person seems to be smug about something.

Yuko's lips curled up slightly involuntarily, but it was fleeting, as if it were just an illusion.

If only she had been more serious back then...

Yuko relaxed slightly.

Ok?

Weren't you just tense?

This is……

With surprise, Kokushibo lowered the knife in his hand slightly.

Yu Zi sighed, "Speaking of which, brother, I think I've fallen in love."

……

Kokushibo said calmly, "Are you out of your mind?"

He actually thought this girl had figured things out. What the hell is love? Who cares if you're in love or not?

What a mess.

Yu Zi's forehead suddenly revealed the character "井" (well), and her childish face twitched: "I was thinking that since you are at least an elder, I should have informed you before killing you."

"Otherwise, it would make me seem very impolite."

Kokushibo said expressionlessly, "You never had that kind of thing to begin with."

"It was my fault." Yu Zi smiled slightly. "Go to hell, you old fogey who doesn't understand love."

Yuko's momentum surged instantly, and in the blink of an eye, she raised her sword and slashed at Kokushibo.

"Are you angry?" Kokushibo dodged her chaotic slash.

"No, not at all," Yuko said with a smile.

Kokushibo sighed inwardly: "...Just asking, is it that brat who knows Sun Breathing?"

Yu Zi's expression stiffened: "What kind of look is that?"

"That ninja?" Kokushibo began using the process of elimination, "but he's already surrounded by..."

boom!

A powerful and heavy blow interrupted his words.

"...I thought so too..." Kokushibo's jaw was cracked from being pulled open. "That blond brat?"

"It couldn't be that pig, could it?"

Yuko fell silent; she had talked too much.