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

Without a doubt, he is a very charismatic person.

When the successor of the Breath of the Day appears in this era, Nezuko faces unprecedented changes, and the demons and the Demon Slayer Corps work together.

Both Ubuyashiki and Tamayo held this belief firmly at this moment.

Kibutsuji Muzan, your end has come.

After a lengthy speech, Kagaya Ubuyashiki turned the conversation to what he cared about most right now: "Ms. Ikuko".

"You shared our intelligence before, and it mentioned the most crucial sentence."

“One Upper Moon requires the combined strength of at least three Pillars to fight against it. I completely agree with your assessment.”

"The last time the Demon Slayer Corps killed an Upper Moon demon was more than a hundred years ago."

"And in this era, Kanae Kocho, the Flower Pillar who fought against Upper Moon Two four years ago, clearly stated that..."

"If that demon is just playing around."

Upon hearing about her older sister's situation, Shinobu Kocho instinctively held her breath.

Every time she thinks about what happened back then, she feels a chill run down her spine.

She almost lost her sister.

“Hmm, Upper Moon Two, Doma, I’ve dealt with him before, that demon…” Yuko recalled for a moment, “Because he doesn’t have human emotions, his behavior is a bit strange.”

To be honest, objectively speaking, it's hard for her to hate Doma, because he was a psychopath.

The slaying of other arrogant and domineering ghosts gives people a sense of satisfaction, as if a great grudge has been avenged.

But Douma... this person has no emotions. He probably can't understand why others hate him, when all he wanted was for them to share eternal life with him.

The emotions he displayed were all imitations of someone learning to walk.

"However, I would like to correct one point."

"If it were the Demon Slayer Corps now, they wouldn't be able to do what I described in the intelligence report."

"Upper Moon One and Upper Moon Two, these two demons are definitely not something that can be defeated simply by a difference in numbers."

Despite her hatred for her former brother, Yuko had to admit that this guy was truly powerful.

Aside from Muzan and Yoriichi, the title of strongest is undisputed; even now, she wouldn't dare say she could win 100%.

As for Doma, that Blood Demon Art... is too effective against swordsmen who use breathing techniques.

As for Akaza, the Upper Moon Three, she didn't see him in person, so she couldn't judge him, but his strength must have been considerable, otherwise the Flame Pillar wouldn't have died at his hands.

"The Demon Slayer Corps now..." Ubuyashiki muttered to herself, then asked with a smile, "Does Ms. Ikuko have any suggestions?"

Yuko removed the white cloth from her face: "I brought the Demon Slayer Corps three ultimate techniques to defeat Muzan."

'Three special techniques?' Shinobu Kocho turned her head in confusion, only to see the alluring markings on Ikuko's face.

Ubuyashiki Amane hesitated and asked, "Are you referring to... the markings?"

Somewhat surprised that the markings had been recorded, Yuko nodded slightly.

“That’s right, the markings, the crimson blade, the transparent domain.”

"These three unique skills are humanity's hope in defeating evil spirits."

Yuko's words left everyone completely bewildered. If it was the Demon Slayer Mark, there were some records left by the Demon Slayer Corps, but what were the Crimson Blade and the Transparent Domain?

Yuko didn't keep them in suspense, stroking the marks on her cheek: "The so-called marks are a method to improve physical fitness. When activated, unusual marks will appear on the surface of the body, hence the name."

Shinobu Kocho couldn't help but take a second look; she thought it was a tattoo or some kind of blood demon technique.

From Yuko's profile, strange red lines meandered down her neck and extended deep below her collarbone.

"The Crimson Blade is a technique to stimulate the power of the Nichirin Blade. It uses strong grip to raise the temperature of the Nichirin Blade, causing the blade to turn red, which can suppress the regeneration of demons."

"The Transparent Domain, on the other hand, grants one near-X-ray vision, allowing them to see the physical structure and blood flow of evil spirits."

"All three abilities are very helpful in combat."

"..."

Everyone was completely baffled, as if they were listening to gibberish.

There are already few records of the markings, and now there's this talk of the Crimson Blade's transparent domain, where the blade turns red and can see through things. If it weren't Yuko who said this, they would all doubt its authenticity.

Is this really a capability that humans can master?

Ubuyashiki Amane pondered for a moment: "The mark, as I remember it being recorded, means that those who activate it never live past the age of twenty-five."

"Yes, because activating the markings is, strictly speaking, a way to sacrifice one's life force in exchange for an increase in combat ability."

Butterfly Shinobu's eyes brightened slightly. She hadn't heard the first half of what he said, but she heard the second half very clearly.

Kagaya Ubuyashiki asked, "How difficult are these three techniques to master?"

"It's not difficult."

"Oh?" Ubuyashiki looked surprised.

He had already prepared himself mentally, because if it were simple, it wouldn't have been lost to time.

"I have markings."

"This is a skill that resonates with those around you. Once one person masters it, others can learn it one after another."

"The Crimson Blade requires immense grip strength, and those who have awakened their markings should have the power to master this technique."

"As for the transparent domain... that is indeed a bit more troublesome."

Mastering the Transparent Domain is unlike the other two; it requires an extremely high level of understanding of martial arts.

Even if one doesn't fully master all three techniques, at the very least... one needs to possess the Demon Slayer Mark and the Crimson Blade to have any chance of defeating Muzan.

Ubuyashiki smiled and said, "I see. Ms. Ikuko's arrival has truly lit a beacon for the future of the Demon Slayer Corps."

"However, the Pillars are currently on missions abroad, so it will probably take some time for them to regroup."

Yuko shook her head: "It's alright. The awakening of the markings can be slowed down as much as possible. I'm confident that they can master it in a short time."

If she awakens her mark, she won't live past twenty-five. If possible, she wants to wait until Tanjiro fully masters the Breath of the Sun before considering it.

As for how to awaken.

You'll naturally awaken once you've been on the brink of life and death.

Resonance doesn't mean you can master it without doing anything; it also requires the body to reach a certain limit.

And she has a million ways to push everyone to their limits.

Kagaya Ubuyashiki estimated that it was about time: "I understand. The three of you must be tired from your journey. I'll trouble Shinobu to arrange your accommodations."

Tired from the long journey?

They came on foot.

After saying goodbye to Ubuyashiki, Shinobu Kocho looked at the three of them and was about to speak when Tamayo interrupted her.

"Miss Butterfly, I heard from Yuko that you took in a ghost with a clear mind. Could you take me to see him?"

Shinobu Kocho paused for a moment, then nodded slightly: "Of course."

She was actually quite curious about how Tamayo would treat the other person.

Shinobu Kocho looked at Ikuko: "Does Ikuko want to go back to the Butterfly Mansion to rest? Or the same room as before? I've already prepared it."

Yu Zi shook her head and pulled up the white cloth: "I'll go with you."

Strictly speaking, this whole thing was her doing; it wouldn't make sense if it weren't for the past.