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

Yuko also felt that she was the protagonist.

After all, it's generally accepted that the transmigrator is the protagonist, right?

But when she was injured by the demon, her lungs were so badly damaged that she could only curl up in bed in pain, sweating profusely and unable to sleep for many nights, and when she could not beat Yoriichi no matter what, she understood.

Even if I am the protagonist, I am the protagonist of a tragic drama.

She is not the main character.

Yuko understood this fact very well.

The transmigrator's sense of superiority over the known plot has long since vanished.

Therefore, she yearned for this era immensely and held a deep expectation for the ray of light that would inevitably appear in the future.

I will fulfill the long-cherished wish that my elder brother could not complete.

She herself wasn't sure how much confidence she had in those words.

So when Tanjiro actually appeared before her eyes, Ikuko felt a great weight lifted off her shoulders.

When a slippery mark appeared on her cheek, Yuko unconsciously realized that she had actually shed tears.

Were they crying tears of joy?

Maybe so.

The figure dancing like a fire sprite in the snow really reminded Yuuko of Yoriichi.

She silently studied all the sword forms of the Breath of the Sun until the Kagura dance ended. By then, it was almost dawn, and the sky was about to break.

After Tanjuro finished his Kagura dance, he picked up Tanjiro, who was running out of the house, while his wife, Aoi Kamado, stood smiling in the corridor, holding their young daughter, Nezuko.

They looked like a happy family.

Yuko suddenly fell silent.

She had forgotten how many brothers and sisters Tanjiro had, but she was sure there were quite a few, at least four or five.

……

Then she...

Should we remain indifferent?

Rationally speaking, she needs to place her hopes of defeating Muzan on Tanjiro, since only Tanjiro can use the Sun Breathing technique in this era, while she is only a half-baked user.

Those who exhaust their paths will ultimately find the same destination.

Swordsmen who use different breathing techniques, as long as they can cultivate them to the extreme, will eventually reach the same pinnacle of skill.

However, the Sun Breathing method is superior to other breathing techniques, and this is an unchangeable fact.

Even the Moon Breathing technique, which Kokushibo improved and whose range was virtually unbeatable, only had its power increased. The Sun Breathing technique's special attack against demons was irreplaceable by any other breathing technique.

What's more, there's Nezuko too.

If she really changed the plot, it might prevent Nezuko from becoming a demon.

I can guess the ending of this shonen manga with a grain of salt: Tanjiro and his sister will team up as humans and demons to defeat Muzan.

But from a personal perspective, she felt uneasy.

Yu Zi took two deep breaths.

It's not time yet. Tanjiro is still a little kid, and there are still several years before the story begins. She has several years to think things through.

The problem is not big.

……

With that thought in mind, Yuko turned and left the woods, heading down the mountain.

She took two steps, her feet sinking into the snow, and then stopped moving.

Yuko gripped the Nichirin Blade tighter.

No...that's not right...

Does she really think it's not the right time yet?

Or are you planning to use another excuse later?

Does it mean you were tied up with other things, or that the timeframe was slightly different from what you expected?

She could just say she missed it, since she hadn't really played a role all these years, and her investigation into the Upper Moons had only yielded information about Doma.

Over the years, how many people has she witnessed dying?

Could the deaths of these people really affect her conscience?

She is still running away.

What is she afraid of?

Yu Zi looked back and saw the happy family walking into the house.

If nothing can be changed, then what is the meaning of her coming into this world?

So why did she go to such lengths to overcome the sunlight with blue spider lilies?

Is it so that they can live forever?

it is ridiculous.

Yuko leaned against the tree, her eyes tightly closed.

She wants to change something.

She's only clinging to life now in the hope of changing something.

At a certain moment, Yu Zi suddenly opened her eyes and then resolutely walked down the mountain.

She will come back.

……

In the mountains somewhere, a stunning orange-red arc shone brightly, illuminating the forest at night.

"Breath of the Sun, Twelfth Form: Flame Dance!"

The arc did not disappear; another, even brighter flame rose.

Yuko was slightly out of breath as she executed all twelve moves in one continuous motion. With her talent, completing all twelve moves in three seconds was already her limit; even in demon form, she could only improve it to two seconds at most.

Yoriichi could connect all his moves in an instant, and the difference between them was so vast that it was no exaggeration to say that they were worlds apart.

and……

Even in her demonic form, this body adapted to sunlight, she couldn't perfectly utilize Sun Breathing.

The burden on the body far exceeded its intended function.

For her, pure Sun Breathing was a side effect.

Yuko originally wanted to try and see if she could scare Muzan with her face.

Given Muzan's even more composed nature than Sima Yi, he might actually be intimidated by her, but if he isn't, then it's her who will break down.

As expected, the best method is to have Tanjiro's family move temporarily. As long as they are all away at that time, Muzan will naturally lose his target.

Yu Zi let out a long sigh, packed his things, and went down the mountain.

……

A fierce battle is raging on the outskirts of the town at the foot of the mountain.

Yu Zi sensed the commotion from afar; the air was filled with the smell of blood and the putrid stench of evil spirits.

Moreover... its level is not low.

Is it the Twelve Ghost Months?

The scent felt strangely familiar, as if I'd encountered it somewhere before.

Yuko couldn't help but move her feet. When she arrived at the scene, she realized why she felt so familiar with it.

Wearing a red top and a strange red cloth on her head.

Doma!

At this moment, his aura was much stronger than when Yuko first met him a hundred years ago, and his position was probably no longer just that of Upper Moon Six.

And the person he fought was...

Yuko's eyes narrowed slightly.

A red and green butterfly-patterned kimono fluttered in the wind, and the figure in battle danced like a butterfly.

Butterfly...to endure?

Why were they able to confront Doma at this particular time?

Did her existence trigger the butterfly effect?

She didn't remember much about the Nine Pillars of Taisho, because many of them only made a brief appearance at the time, and over the years, Yuko only remembered a few of the most distinctive features.

For example, Yan Zhu, who has a very loud voice, is still remembered by her. Because all members of their clan look the same, she has occasionally encountered him over the past few hundred years.

For example, Shinobu Kocho is petite and uses poison...

Yuko suddenly paused, wait a minute...

This height and build...

Something feels wrong.