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

Yuko's speed slowed down.

After dodging the sudden attack, Shinobu Kocho subconsciously thought this.

But she quickly realized that Yuko was just not taking it seriously.

But just as Yuko planned, she wouldn't have much time to think.

Here comes the next move.

"Snow Breathing - Fourth Form - Warm Snow".

Snowflakes reflected in Shinobu's eyes, and her intuition told her that she must not touch them.

She looked around, trying to find a place that wasn't covered by snowflakes.

Shinobu turned around, only to find herself completely covered in snowflakes.

no solution anymore!

Butterfly gritted her teeth and drew her sword.

'Insect Breathing, Centipede Dance, Centipede Belly!'

The powerful stomping shook the ground, creating gusts of wind that scattered the snowflakes falling from all directions.

Often, the first encounter is a test of who has the stronger ability to respond.

Shinobu Kocho may lack physical talent, but as a Pillar, she is never inferior to others in other aspects.

Yuko gradually increased her strength and speed, so as not to give her a chance to catch her breath.

The butterfly haori was torn in several places, and there were also some bloodstains on her body.

The intense suppression forced Shinobu to flee in a sorry state. Not to mention encountering Yuuko, even getting close to her became difficult. Her brain had to break down before it could even begin to function, all because of her need to evade.

Shinobu Kocho can barely defend against Ikuko's attacks.

Yuko was also constantly observing Shinobu's body posture through her transparent field. Once the pressure exceeded what Shinobu could withstand, she would stop.

Shinobu's heart rate and pulse had soared to their maximum, and her body temperature was rising rapidly.

Suddenly, a red pattern appeared on her cheek.

Yuko was momentarily stunned, and Shinobu Kocho seized the opportunity, stepping on the back of Yuko's sword and drifting backward.

In mid-air, Shinobu adjusted her landing posture and finally found an opportunity to counterattack.

"The Breath of Insects, the Dance of Butterflies, Teasing".

Perhaps she herself did not realize that her speed and strength had both increased significantly.

Yuko swiftly grabbed the slender blade of the knife. Shinobu Kocho remained unfazed and tried to pull it out... but couldn't.

Shinobu Kocho tugged hard, but the blade didn't budge.

Since it was just training, Yuko would proactively release her attacks after deflecting them... that's how it should be...

Seeing Shinobu's confused expression, Yuko pointed at her cheek with amusement: "Shinobu, you've succeeded."

"Huh?" Shinobu Kocho's expression froze.

Yuko released her grip, and as she deactivated her demonic transformation, she used the blade of the Shura sword as a mirror to present it to her.

With the help of the bright moonlight, Butterfly could clearly see that red butterfly-shaped markings had appeared on her tender cheeks.

Shinobu subconsciously touched her cheek. Is this the mark?

But why was she still so easily caught by Yuko?

Shinobu Kocho calmed herself down and focused on her physical condition. She wasn't sure if her condition had improved, but her current body temperature and heart rate were indeed alarming.

It's like the state of running for a long time after having a fever.

For a moment, Shinobu Kocho was somewhat confused: "Did it...did it work?"

"Hmm." Yuko stepped back, holding the sword with both hands, and gestured, "Shinobu can pay attention to the changes in her body."

Shinobu Kocho nodded slightly: "I understand."

Shinobu Kocho gripped her blade tightly and began a new round of attacks.

At this point, the offensive and defensive strategies become more varied.

Yuko was simply defending and blocking.

Shinobu Kocho was thus able to carefully perceive the changes within herself.

She really has become stronger!

Although she had no reference point, Shinobu Kocho clearly sensed the changes within herself.

Especially her speed. Shinobu Kocho was already quite fast among the Pillars, and her dash speed was the fastest among them.

Now that her markings have awakened, she has consciously experienced the fact that she has become stronger.

but……

Seeing Yuko easily block her attack, Shinobu Kocho's initial joy froze instantly.

Isn't there no difference?

Yuko is indeed very strong.

Butterfly took a deep breath, feeling genuinely happy.

With the addition of a fighter comparable to Upper Moon One, the Demon Slayer Corps' chances of victory have increased even further.

As Shinobu Kocho sheathed her Nichirin Blade, the markings on her cheeks slowly disappeared.

Yuko pointed to her cheek and explained, "The newly awakened markings can't be maintained indefinitely, but they will easily appear once you enter battle mode."

The reason she was able to maintain her awakening for so long was that the awakening of the markings was not so much related to her constitution, but it was not entirely unrelated either.

Shinobu Kocho paused for a moment, then used Ikuko's knife to examine her cheek again. Sure enough, the butterfly markings from before had disappeared.

Body temperature and heart rate gradually decreased.

"When my sister comes back, I'm going to give her a surprise."

Yu Zi smiled slightly: "Of course."

In her perception, Shinobu Kocho is now comparable to Giyu Tomioka; in terms of speed alone, he would have difficulty even touching the hem of her clothes.

Shinobu Kocho suddenly looked up at Ikuko, a slight smile appearing on her lips: "Ikuko, thank you."

Yu Zi smiled faintly and said, "It's nothing."

……

Shinobu Kocho awakened her Demon Slayer Mark, which is a good thing for the Demon Slayer Corps.

Any increase in combat power could potentially help defeat Muzan, let alone a Pillar-level powerhouse.

Yuko's days became much easier after that. She spent her days either planning the future with Tamayo or helping Shinobu Kocho consolidate her mark.

until……

Shinobu Kocho found Ikuko, who was discussing things with Tamayo, and said, "Ikuko, our lord requests our presence."

"me?"

Shinobu Kocho nodded slightly: "It seems to be related to the Lower Moon demon of Mount Natagumo."

Has the story progressed to the point where Tanjiro defeats Lower Rank 5?

Upon hearing this, Yuko picked up a Nichirin Blade from the side: "Do you need our reinforcements?"

Shinobu Kocho paused slightly, then said, "No, they just want us to come over there."

Shinobu Kocho chuckled, "It seems a Demon Slayer Corps swordsman has slain that demon. If nothing unexpected happens, the Demon Slayer Corps should gain a new Pillar."

Yuko's expression froze for a moment: "Is she a newcomer?"

"Hmm, I heard he's a boy with short red hair."

According to the plot, it should have been the Water Pillar Giyu Tomioka who killed her. Although her memory at the time was a bit blurry, there's no doubt that this plot is accurate.

That is... Tanjiro has indeed grown at a speed that surpasses the original story.

Yuko smiled and said, "Then let's go take a look."

"I heard that the Lord has also recalled the other Pillars this time, probably planning to hold a Pillars Conference. My sister should be back soon too." Shinobu Kocho said, a smile unconsciously creeping onto her lips. "She's been wanting to thank you."

Yuko sighed helplessly, "This is..."