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

Yuko had a nightmare in which Iwakatsu had turned into a ghost.

When she woke up, Yuko, her forehead covered in cold sweat, suddenly opened her eyes and sat up.

Is it a dream?

Almost instinctively, she looked for the table she had knocked over in her dream and the floor stained with blood.

The table stood there neatly, and there was no blood on the floor.

Yes……

Wow~

The door was opened, and a female doctor carrying a basin of water came in. When she saw that Yu Zi had woken up, she quickly took two steps forward.

"Miss Yuko? Thankfully you are safe and sound."

Yuko's gaze was somewhat dazed: "? What?"

The doctor paused for a moment, her fingers tightening around the basin of water, and her expression turned somewhat somber.

"Yan Sheng... cut off his lord's head and went to join the Ghost King."

Anger was also evident in the doctor's eyes.

Yuko opened her mouth, but couldn't say anything.

As a modern person, Yu Zi actually feels uncomfortable with the ancient concept of ruler and subject.

Making people kneel is something she dislikes from the bottom of her heart.

However, it cannot be denied that the leader of the Demon Slayer Corps is a very charismatic leader who is exceptionally kind to his team members.

Iwakatsu had also received his kindness...

Iwakatsu, who always respected the hierarchical order, personally cut off his lord's head.

What an irony.

Yu Zi opened her mouth, her voice a little hoarse, and asked, "Where are the others?"

"Everything is fine."

"Iwakatsu fled immediately after killing his lord."

"If the pillars hadn't all been out on missions, our lord would certainly be safe."

"What about Yoriichi? Does he know?"

"Mr. Yoriichi returned this morning with Lord Flame Pillar. He came to see you once and should be at the Lord's residence now."

Upon hearing this, Yuko threw off the covers and got up.

"Miss Yuko, your body really can't take this kind of abuse anymore."

"The Snow Breathing technique is causing severe damage to the lungs; it could take up to three years at a time..."

From the perspective of breathing techniques, forcing someone whose body is not suited to sun breathing to practice it will cause their lungs to suffer a burning pain.

Conversely, the Snow Breathing technique can cause frostbite to the lungs of those who are not suited to it.

This is why many members of the Demon Slayer Corps consider Snow Breathing to be no less than the original Breathing technique.

The requirements for mastering it are too strict; currently, only Yuko can use it.

However, after Yuko's lungs were injured, the effects of Snow Breathing on her were also extremely noticeable.

Yu Zi gently pressed down the doctor's hand. "I know, I'm sorry to have worried you."

"But I still have things I want to do."

She dragged her heavy body out of the house and headed towards her lord's residence.

She encountered members of the Demon Slayer Corps along the way; they were newcomers whom she had mentored.

Yu Zi forced a smile and nodded at them.

The crowd remained unmoved, looking at her with a very subtle expression.

That look in his eyes seemed to hold anger, resentment, and sympathy; it was hard to describe the feeling.

But it's very different from what I usually expect.

Yu Ziwei was lost in thought for a moment. When she came back to her senses, her expression changed slightly, and she couldn't help but quicken her pace.

……

At the Lord's residence.

The Pillars, who had rushed back overnight upon receiving news of their lord's death, were now surrounding Yoriichi, who was kneeling on the ground.

Yoriichi simply sat upright, his hands clenched tightly on his thighs.

"It's all your fault! Your brother turned into a ghost and killed our lord!"

"Stop talking, Yoriichi must be feeling bad too." Enju pulled away his companion who was criticizing Yoriichi.

"It's all because he didn't kill the Ghost King and let the evil spirits who were traveling with the Ghost King go!"

"You! Commit seppuku..."

Wow~

The door was suddenly pulled open, and Yuko's frail body burst forth with astonishing strength, pushing away everyone surrounding Yoriichi. Then, she protectively embraced Yoriichi, shielding him beneath her.

"Stop talking..." She hugged Yoriichi tightly, her voice almost pleading.

The pillars here are all her teachers who taught her breathing techniques. They are all kind people, and she has a very good relationship with them.

Yuko knew very well that it was because their beloved lord had been killed by Iwakatsu that they had turned their sharp words on their comrades-in-arms in a fit of rage.

Both Yan Sheng and she were recommended to join the party by Yoriichi. The killing of their lord was inextricably linked to Yoriichi.

Leaving aside the fact that the Ghost King escaped, releasing the evil spirits who accompanied him was equally unforgivable.

In this day and age, being forced to commit seppuku (ritual suicide) is actually quite normal.

So she couldn't explain anything and could only hope that everyone would calm down.

Yuko is quite popular within the team; both the Pillars and the team members have a great fondness for this gentle girl.

Upon seeing her frail figure, the crowd's accusations ceased.

When the pillars returned, they learned that Yuko had fallen into a coma.

The doctor who had been treating Yuko found her unconscious.

When she found Yuko, there were signs of a battle in the room, which proved that Yuko had fought with Iwakatsu, who had become a demon.

“Yuko…” Yoriichi, who was being held by her, had a look of emotion in his eyes.

The anger in the Pillars' hearts melted a lot because of Yuko's arrival, but the atmosphere remained the same.

Fortunately, at this moment, the lord's child appeared.

At the tender age of six, he hastily took over the position of head of the Demon Slayer Corps after his father's death.

He appeased the angry Pillars and, on the condition that Yoriichi be expelled from the Demon Slayer Corps, forgave his mistake of misjudging people.

Having resolved Yoriichi's matter, the six-year-old lord turned his gaze to Ikuko, who sat upright to the side. Her pale figure resembled a white lotus swaying precariously in a pond.

"Miss Yuko, I'll have someone take you back right now."

"The doctor has come to see Father more than once. Please take good care of your health."

Yu Zi lowered her head slightly: "Please allow me, my lord, to leave the ranks with my brother."

"Miss Yuko..."

“Yuko, you did nothing wrong.”

Everyone spoke one after another.

Even Yoriichi was one of them.

"Yuko, you don't need to do this."

Yuko shook her head: "I can no longer slay demons. Staying in the Demon Slayer Corps will only cause trouble for everyone."

"I will compile the Snow Breathing technique into a book later, and I hope it will be useful someday."

The lord opened his mouth as if to ask them to stay but couldn't say anything. In the end, he just nodded slightly: "I understand, Miss Yuko, Mr. Yoriichi. Please take care of yourselves."

"Take care, my lord."

Take care, everyone.

After tidying up the sword form and breathing technique of Snow Breathing, Yuko left the Demon Slayer Corps with Yoriichi.

She has developed eight sword forms for Snow Breathing, more than the five major breathing techniques at this time.

After leaving the Demon Slayer Corps headquarters, Yuuko gazed at the boundless clear sky and said, "Brother, you've been out for quite a while now. Would you like to go home and visit?"

It was only before leaving the team that Yuuko learned the truth about the battle with Muzan from Yoriichi.

It wasn't because he couldn't kill Muzan, but because he didn't expect Muzan to be able to split into more than 1,800 pieces of flesh and blood and escape in an instant.

This is why Yoriichi is called the ceiling.

If she had just mentioned it to Yuan Yi and asked him to pay more attention... would things have been different?

Yuko had actually considered staying by Yoriichi's side and helping him out when they encountered Muzan, hoping that they might be able to successfully kill Muzan.

But what she didn't expect was that Kokushi's transformation into a demon and his killing of the master and Yoriichi's encounter with Muzan happened almost one after the other.

She was completely unprepared.

She... couldn't change anything...

"There's a place I want to go." Yoriichi looked at the same sky as her, a faint sadness tinged with his expression.

Yuko nodded. With Yan Sheng's betrayal, she had even less affection for that cold home, and it didn't matter whether she went back or not.

"Where would you like to go, brother?"

"Go see my wife."

"Eh?"