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

The Butterfly Mansion is the logistics organization of the Demon Slayer Corps, a medical institution managed by the Butterfly Sisters, primarily providing treatment and rehabilitation for injured Demon Slayer Corps swordsmen.

Outside the Butterfly House, Yuko sat quietly on the corridor, watching the courtyard.

Footsteps sounded from one side of the corridor.

"Sorry for the wait,"

With a tranquil voice, Shinobu Kocho put down the tea set and sat down next to Ikuko.

“My older sister is away on a mission and can’t come back,” Shinobu Kocho explained. “So I’ll have to take care of Miss Yuuko.”

"It's alright." Hearing her mention her sister, Yuko subconsciously looked at her haori.

Shinobu Kocho noticed her gaze and explained with a smile, "This is a gift from my sister when I became a Pillar."

"very beautiful."

"Thank you." Shinobu chuckled softly, then remembered the tea she had placed there. She picked it up and handed it to Yuuko. "Please, this flower tea tastes very good."

scented tea?

It's not wisteria.

Yuko took the teacup and couldn't help but glance at it a few more times.

Although she had overcome the effects of the sun, the toxins in the wisteria flowers were still effective against her.

Of course, the effect is not significant. Even if it seeps into the body, it will be quickly broken down. Unless the dosage is extremely high, it is unlikely to have any effect on her.

Fortunately, that wasn't the case. At Shinobu's prompting, Ikuko picked up her teacup and took a small sip.

Before she could finish her high-EQ statement, Shinobu Kocho suddenly said...

"Miss Yuko... are you forcing yourself?"

"Hmm?" Yuko turned her head and met Shinobu Kocho's complicated expression.

"Miss Yuko... is she a ghost?"

Yu Zi paused for a moment, then suddenly relaxed and put down the tea she was only taking a sip of.

She smiled gently and said, "Yes."

Having received an affirmative answer, Shinobu Kocho did not say anything more, but turned around and silently watched the setting sun.

The slight tightening of his grip on the cup hinted at the unease within him.

After a moment, she said, "A ghost that can overcome sunlight... that's incredible."

"It was just a coincidence." Yuko's eyes reflected the afterglow of the setting sun.

She never had the idea of ​​becoming a demon, because Muzan possessed the ability to read the minds of demons within a certain range.

If she hadn't been certain that she had broken free from Muzan's control, she would never have used the spider lily to overcome the sunlight.

Shinobu Kocho paid no attention, simply watching the sunset quietly: "What is the relationship between Miss Yuuko and Muzan Kibutsuji?"

Her voice didn't reveal much emotion, remaining as tranquil and serene as ever.

Yuko didn't think much of it and simply said, "Enemy."

Anyone with sound values ​​would find Muzan's actions intolerable.

All I saw along the way was misery.

"..."

Although Shinobu Kocho showed no unusual behavior, Ikuko could sense that she had relaxed considerably.

Yuko only keeps the Transparent Domain running when she's dealing with serious matters; she doesn't keep it on all the time.

The Perspective Field can only penetrate the human body, not see through other objects, and she has no interest in looking at a bunch of skeletons every moment.

Shinobu Kocho relaxed her grip on the cup slightly, and her tense shoulders slumped down a little.

“My sister is a very gentle person, so gentle that even evil spirits feel pity for her.” She seemed to be talking to herself, yet also confiding in Yuko. “I hope that humans can coexist peacefully with demons.”

Yuko's eyelids droop slightly, which is hardly a commendable idea.

Do not……

Even Kanae Kocho, when she feels compassion for demons, will resolutely cut off their heads, just like Tanjiro.

Only her...

It was genuine hesitation and timidity.

Otherwise, Yae's father wouldn't have stopped the two of them because of a sliver of rationality.

Shinobu Kocho said calmly, "I've never really agreed with my sister's ideas, and we often argue because of it."

"Until two years ago, Miss Yuko saved her from the clutches of the evil spirit."

“So…” Shinobu suddenly turned her head: “So I want to try to believe, just like my sister…”

Yu Zi smiled slightly: "Thank you."

……

After the two talked things out, Shinobu's heart felt less heavy.

She asked curiously, "Are there ghosts like Miss Yuko in this world?"

"If you mean overcoming the sun, there probably isn't one at the moment."

She silently added in her mind, "Nezuko might be able to, but she's never been exposed to the sun, so I'm not really sure."

"If you mean getting rid of Muzan's control, I know of three people besides myself."

Shinobu Kocho's eyes widened slightly: "Three more?"

"One of them is the doctor I mentioned earlier, named Tamayo, who is a good friend of mine."

Shinobu Kocho couldn't help but ask, "The Demon Doctor?"

"Ah."

Shinobu Kocho was very surprised. "This is unbelievable."

If it were a ghost doctor, she could understand why someone could surpass her in the field of demon research.

"There was another one named Yushiro, who was Tamayo's companion."

"The last one is Nezuko, a cute little sister. You might be able to see her in a couple of years."

When it came to areas she knew nothing about, Shinobu Kocho, like a curious child, eagerly asked, "So how did you break free from Muzan's control?"

Ikuko: "..."

Previously, the topic was so heavy that it was difficult to speak, but now they've opened up and are talking like a walking encyclopedia of questions.

She patiently answered Shinobu's questions, and the surprise on Shinobu's face did not fade until evening.

After staying at the Butterfly Mansion for two days, Ikuko bid farewell to Shinobu Kocho and Ubuyashiki.

Before leaving, she handed over the Upper Moon intelligence she had compiled to Ubuyashiki.

It's called intelligence, but it only includes the top three.

Ubuyashiki was quite pleased, as they had very little information about the Twelve Demon Moons, even about the Lower Moon, let alone the Upper Moon.

The last time an Upper Moon demon was killed was over a hundred years ago.

Apart from that, Yuko has not yet informed them about information such as the Transparent Domain and the Crimson Blade.

This is not a skill that can be mastered immediately after explanation.

When they parted, Ubuyashiki sent them a kasugata named Yukijaku as a token of their farewell.

Yae was temporarily assigned to stay with the Demon Slayer Corps, and every day she would visit her father through the iron chains, trying to awaken his sanity.

Before going to Mount Sagiri to visit Tanjiro, Ikuko went to Asakusa alone, trying to find Tamayo.

But she searched for three days and three nights in Asakusa and still couldn't find any trace of Tamayo.

Asakusa already has the appearance of a modern city, and it's not a small town that you can see the end of at a glance. In addition, with Tamayo and Yushiro's Blood Demon Art covering the way, it's really hard to find without Tanjiro's luck.

She used the Kasugai crow to deliver the message to Yae, and told her not to give up hope.

She believed that as long as the cannibalism continued, she could effectively control the situation.

Unable to find Tamayo, Ikuko had no choice but to leave Asakusa and head towards Mt. Sagiri.

Several months had passed since Ikuko and Tanjiro's group parted ways.