Big Brother, I'm Hungry~

Tanjiki watched with complete concentration, as if he wanted to imprint every detail of the movements into his eyes.

Noticing his expression, Yuko suddenly understood.

The beautiful Sword Style of Sun Breathing, beautiful enough to make one forget to breathe, made Yoriichi look like an elf dancing in the flames.

So this was how the Dance of the Fire God passed down through Tanjiro's family from generation to generation.

All the forms of Sun Breathing were firmly etched into Tanjiki's eyes.

After the dance, Tamiko happily praised Yoriichi's Sword Style while holding her daughter.

Yoriichi lowered his head as if embarrassed.

Tanjiki said excitedly, "Mr. Yoriichi, Miss Yuko, you must come and visit us often whenever you have the time."

Yoriichi said nothing more. He suddenly removed his earrings and gave them to Tanjiki.

Tanjiki solemnly accepted the earrings with both hands. He had a feeling.

Mr. Yoriichi probably wouldn't be coming again.

"Mr. Yoriichi! We'll pass it down... With the lives you saved..."

Tanjiki suddenly took two steps forward and shouted with all his strength.

"You're absolutely not a worthless person. Please, don't ever think that you've accomplished nothing!"

"I absolutely won't allow anyone to say that. I..."

"I swear to you, I'll definitely pass these earrings and Sun Breathing down to future generations!"

For an instant, his figure overlapped in Yuko's eyes with that of a certain boy who had a scar on his forehead.

They were both such gentle people.

Yuko saw the sorrow in his heart and comforted him. "Don't worry. We'll come often."

She still hadn't found her Spider Lily.

She definitely had to come back.

"Miss Yuko..." Seeing Yuko's gentle smile, Tanjiki was momentarily dazed before finally coming to his senses.

Mr. Yoriichi wasn't alone after all.

Tanjiki's lips moved slightly. "Miss Yuko, I'll leave Mr. Yoriichi in your care."

"Yes, please leave him to me."

Just then, Yoriichi gently turned his head.

"Thank you."

The two of them returned home together. The moment they entered the house, Yuko collapsed onto the tatami mats.

"Big Brother, I'm hungry~"

Yoriichi: "..."

What exactly was this adorable creature?

After feeding his little sister, Yuko treated Yoriichi's wounds.

"Big Brother." Yuko looked at Yoriichi with a solemn expression.

"What is it?" Yoriichi lowered his sleeve and looked at her in confusion.

"Since Muzan probably won't appear again, I want to make some preparations for the future."

"What?"

Yoriichi fetched paper and a brush.

"Big Brother, you still remember Muzan's body structure clearly, right?"

"If you can draw it, I want to..."

Before she could finish, Yoriichi calmly spoke.

"There's no need..."

A vein appeared on Yuko's forehead.

"Big Brother."

"Hmm?"

Yuko revealed a deathly smile. "Do you know? Melancholy handsome men like you have already fallen out of the meta."

"?"

The corners of Yuko's raised lips slowly drooped as she said sadly, "Why do you always insist on taking all the responsibility upon yourself?"

"It clearly wasn't your fault, Big Brother."

Hearing this, Yoriichi merely lowered his eyes indifferently.

Words of comfort...

For adults, they actually weren't very effective...

If a child did poorly on an exam and felt dejected, one could still encourage them by telling them to work harder next time.

But for an adult, such encouragement was difficult to make effective. There was only one thing that could comfort them: success.

Yet Yoriichi had failed to protect his family, and failed to kill Muzan. Those were facts that could no longer be changed.

In front of this defeated person, who had already failed with no chance of undoing it, words of encouragement were useless.

Yuko suddenly said, "Leave it to me."

"?" Yoriichi raised his head in confusion.

"The mission of killing Muzan." Yuko looked at him solemnly. "No matter how many years it takes, I'll definitely accomplish the long-cherished wish you failed to fulfill, Big Brother."

Those who pursued the Way to its end would ultimately arrive at the same destination.

The phrase sounded profound, but in reality, it had run through Yoriichi's 'incompetent' life from beginning to end.

Those who delved deeply into the Way would ultimately reach the same place.

This was like believing in the wisdom of future generations. It was wrong.

Or rather, it was too one-sided.

Human development had never been horizontal.

If those who came before didn't do everything possible to pass on their knowledge, those who came after had no way to develop.

The thousands of years of human history weren't the talent of one person or one group, but the result of everyone's shared efforts.

Everyone, to a greater or lesser extent, influenced everything around them.

In Yuko's eyes, Yoriichi was escaping from his own 'incompetent' life, with a feeling of giving up on himself.

I'm this useless anyway. I can't accomplish anything at all.

Someone stronger than me might be born right now, and so on. Whether Breathing Techniques are passed down or not doesn't matter.

Yoriichi was a gentle person, but he was also a weak-willed one.

"Big Brother? Big Brother, can you hear me?" Yuko tilted her head and waved her hand in front of Yoriichi's eyes.

After she finished speaking, Yoriichi had fallen into a daze.

Did I move him?

Well, that's normal.

After all, these were PUA techniques that were centuries ahead of their time. An ordinary person wouldn't be able to withstand them.

Yoriichi stared blankly at Yuko, tears welling up in the corners of his eyes.

While Yuko was distracted, Yoriichi suddenly pulled her into his arms.

Yuko was surprised for a moment, then gently patted his back in return and said softly,

"It's all right, Big Brother. You've already done very well."

"Leave the rest to me."

"Seven hearts and five brains..." Looking at the structural diagram Yoriichi had finished drawing, Yuko couldn't help commenting, "This guy is pretty incredible."

"So, to kill him, we have to cut off all twelve of his weak points in an instant?"

"I'm afraid that won't work." Yoriichi shook his head, a trace of disappointment in his eyes. "At the time, my Sword Style had completely severed his weak points, but he still didn't die."

This was also the direct reason Yoriichi had failed to anticipate that Muzan had another trump card.

Yuko said gloomily, "In other words... only the sun?"

Yoriichi was about to nod, but after hesitating, he shook his head instead. "At the time, he suddenly split into more than eighteen hundred chunks of flesh."

"I think that if I had been able to completely chop those chunks apart then, he might not have been able to regenerate."

"Sever his neck and smash all twelve weak points, then destroy the pieces of flesh he split into." Yuko muttered, the corners of her mouth twitching slightly. "I feel like waiting until dawn still has a better chance of working."

She knew that even if she became a Demon, gained a massive boost to her physical abilities, and received the enhancement of a Blood Demon Art, she still absolutely wouldn't be Yoriichi's equal.

Even if Muzan was inferior to Yoriichi, he was still far beyond anything they could compare to.

Based on what she knew, when the Demon Slayer Corps defeated Muzan, many people said it was a victory brought about by plot convenience.

In other words, even Tanjiro and the others hadn't been able to kill Muzan head-on.

Plot convenience was a peculiar narrative device, and it made it impossible for Yuko to wait peacefully for the beautiful ending in which Muzan was slain.

After all, it was possible that some things had already changed under the influence of an outsider like her.

The consequences brought about by the butterfly effect had to be guarded against.