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

A blade reeking of decay slashed towards him, and a purple crescent moon burst forth from the blade, accompanied by countless tiny crescents. The speed of the slash was so fast that Muichiro could not parry it.

Muichiro instinctively stepped back, but he couldn't retaliate and could only watch helplessly as the blade approached him.

Can't escape.

……

As a swordsman of the Demon Slayer Corps, disregarding life and death is the most basic quality.

While it's possible that some people join the Demon Slayer Corps for money, the Corps guarantees nearly 90% purity.

In order to slay the demons, in order to slay Muzan.

Muichiro was the same; death was not frightening to him.

but……

Why do I feel so sad at this time?

It's like... I forgot something important.

It was something he had to remember.

"Muichiro..."

In a daze, it seemed as if a voice rang in his ears.

Who?

Who is speaking?

Why does he feel so sad...?

Can't remember.

Purple moonlight reflected in his pupils, and Muichiro's tense body relaxed slightly.

That's all for him.

I should have remembered.

……

Bear!!!

what sound?

A tiny spark ignited in Muichiro's deep, emerald-green eyes, illuminating the surrounding trees.

The roaring flames were like torches rising in the winter snow, bringing a glimmer of hope to Muichiro.

"Snow Breathing - Eleventh Form - Red Furnace Lights Snow".

Bear!!!

A streak of extremely fast red light swept past him, followed by a brief wave of heat, and then a chilling aura spread out, carrying with it a faint fragrance.

Hey~

The snow-white Nichirin Blade, with a faint red glow, struck the eye-filled demon blade with a crisp clang, instantly shattering the purple crescent moon.

As the blades touched, Kokushibo looked down and saw a crack appear on the blade of Oni no Blade.

But in the blink of an eye, the crack was completely repaired as the blade twitched.

Knowing when to stop, Yuko forced Kokushibo back and immediately retreated to Muichiro's side.

Yu Zi glanced sideways: "Are you alright?"

Muichiro didn't feel much relief at surviving the ordeal and shook his head expressionlessly.

Without turning her head, Yuko said, "Leave this to me. Go and meet up with Tanjiro. He might need some help."

Muichiro's brow furrowed almost imperceptibly, but quickly relaxed.

"I understand, be careful." Muichiro sheathed his sword. "This guy... is very strong..."

Yuko adjusted her breathing: "Of course I know he's strong."

Knowing he couldn't help by staying, Muichiro promptly headed back to the village.

Hearing the footsteps receding behind her, Yuko let out a soft breath and looked at Kokushibo with a gloomy expression: "You really do appear in unexpected places."

Yu Zi wanted to ask, "Why are you everywhere?"

Is Upper Moon One really in such a sorry state? He's just being moved around wherever he's needed.

Faced with Yuko's questioning, Kokushibo remained silent, only sizing her up thoughtfully.

Noticing his gaze, Yuko frowned and looked down.

Because she had just taken a bath, she was only wearing underwear under her yukata. Her snow-white thighs were faintly visible under the yukata, and her white toes were crystal clear under the moonlight, like jade.

I was originally wearing a pair of wooden clogs, but they restricted my movement.

She didn't need to worry about the difference in strength when fighting Gyokko, but after seeing Kokushibo's slash, she kicked off her wooden clogs and rushed over at full speed.

Yu Zi spat out, "Six-eyed pervert, where are you looking?"

Kokushibo paused for a moment, then his expression returned to normal: "I was just a little surprised because I've never seen you dressed like this before."

Yu Zi's face darkened: "Who do you think killed him?"

She was supposed to go back to rest after taking a bath, but she ended up rushing over dressed like this.

Fortunately, she didn't change her clothes before coming, otherwise she would have been collecting Muichiro's body.

"You're ruthless even to your own descendants, you're something else," Yuko sneered. "Well, you never thought about this when you abandoned your wife and children and left the country, did you?"

Kokushibo's eyelids drooped slightly: "How do you think you caught up?"

If he hadn't held back, Muichiro would have been dead long ago.

As for the successor to the nation...

To be honest, he didn't have much affection for that family.

Needless to say, it's even worse after they become ghosts.

The reason I was talking so much nonsense with Muichiro was simply because I was surprised that the country had a descendant, and because I was amazed by his talent and wanted him to be used by Lord Muzan.

Yuko let out a breath: "Then should I thank you?"

Kokushibo did not respond; he keenly sensed Yuko's unusual behavior.

The breathing adjustments are a bit too frequent.

"You really are beyond saving...brother..."

……

"...What did you just call me?" After a moment of silence, Kokushibo's calm eyes widened slightly, and his body involuntarily leaned forward.

Yu Zi regulated her breathing calmly and said with a composed expression, "Haven't seen you for hundreds of years, have you become this hard of hearing?"

Ikuko...

Sure enough, you understand him.

Kokushibo's calm heart stirred slightly.

“Yuko, come to me.” Kokushibo held out his hand. “As long as we’re siblings…”

“You seem to have misunderstood something,” Yuko interrupted him.

Seeing her attitude, Kokushimona's agitated heart calmed down considerably.

"Then, why..."

"As the saying goes, even an ugly daughter-in-law has to meet her in-laws. Blood is thicker than water, so I can't just say we have no relation at all, can I?"

"Now the Demon Slayer Corps all know you're my brother, and they look at me like they're looking at the family member of a murderer."

"If you're really feeling embarrassed, why don't you just stand there and let me chop you once?"

Yuko's string of words left Kokushibo somewhat bewildered.

What... what are you even talking about?

But he still understood the last sentence.

"Is this what you mean by blood being thicker than water?"

"Of course, isn't that what I'm learning from you?"

"?"

"Why didn't you remember that Yoriichi was your brother when you killed him?"

Yuko spoke in a flippant tone, but Kokushibo still noticed the sadness in her eyes.

"Ok?"

Yuko suddenly let out a soft "Eh".

Kokushibo was brought back to his senses by her surprise. Before he could figure out what was going on, he heard Yuko say through gritted teeth.

What did you do to my doll butler?

"Who will make me the tea I want to drink? You?"

"You're not even going to let a doll go? Just because this doll looks exactly like Yoriichi?"

"You have such a terrible personality..."

Kokushibo said calmly, "Is that enough..."

Ikuko's expression froze.

Kokushibo raised his eyes slightly: "You've never been good at acting."