"Mr. Nagi, you're still awake this late?" Shinobu Kocho asked, her face flushed, lightly covering her mouth with a handkerchief because it was bleeding... Uchiha Nagi was speechless. Shinobu Kocho was always silent, liked to sneak up behind people, and then speak very close to them... Luckily it was him; wouldn't it be a huge loss if it were a disfigured man like Shinazugawa?
"Yes, I was practicing my Breathing Technique, trying to maintain constant breathing, and then I got bored and started playing music. Did I disturb you?" Uchiha Nagi wiped the blood from his lips.
Since she didn't mention it, he naturally wouldn't be so tactless as to bring up the awkward incident.
"Ah, Mr. Uchiha Nagi, the music you play is truly beautiful, it's just that every piece carries a faint melancholy," Shinobu Kocho said.
"Everyone has their own unresolved sadness, don't they? Even though Miss Shinobu always keeps a smile on her face, the hatred in her heart can never be dispelled," Uchiha Nagi said. "Especially when you look at Nezuko, even if you maintain a smile on your face, your heart is still filled with anger..."
"Ah..." Shinobu Kocho's thoughts were seen through by Uchiha Nagi, and the smile on her face slowly began to disappear.
"My elder sister died at the hands of a demon. She always hoped that humans and demons could get along, but in the end..."
Shinobu Kocho's older sister, Kanae Kocho, always hoped that humans and demons could get along, because many demons were forcibly transformed by Muzan and were inherently kind.
She believed that if they could control themselves not to harm humans, they could coexist peacefully. However, during a mission, she encountered Doma, the Upper Rank Two.
He was an emotionless monster, terrifyingly powerful, and ultimately, Kanae Kocho was defeated and killed by him.
Shinobu Kocho consequently hated demons, inherited her sister's will and butterfly haori, and always used a gentle smile to mask her true feelings.
"You miss your sister very much, don't you?" Uchiha Nagi asked.
"I miss her very much, but what can I do? I can never see her again..." Shinobu Kocho's smile faded, revealing a touch of sadness.
"I can let you see your sister one more time," Uchiha Nagi said.
"Hm?!" Shinobu Kocho looked at Uchiha Nagi, puzzled.
Uchiha Nagi activated his Mangekyo Sharingan, and a pair of crimson eyes appeared in Shinobu Kocho's vision.
"Sister..." Shinobu Kocho looked at her sister in surprise, then looked around. It seemed she had returned to a few years ago; everything was just as she remembered.
Her sister had a gentle smile on her face, taking her through a bustling market, buying the child Kanao, and then when she paid, she playfully tricked the human trafficker, scattering the money everywhere.
She realized she was in a world of genjutsu, a unique Ninjutsu from Uchiha Nagi's eyes.
Even so, she couldn't bear to break this dream with her Breathing Technique. Instead, she rushed forward, tears streaming down her face, and hugged her sister.
"Sister, I miss you so much, boo hoo..." In the dream world, Shinobu Kocho reverted to her lively, straightforward, and feisty nature, embracing her sister and beginning to cry.
This was not Tsukuyomi; it couldn't make Shinobu Kocho stay in the genjutsu world for three days and three nights in an instant. As time weakened, even if Shinobu Kocho herself didn't break the genjutsu world, the genjutsu would automatically dissipate after a few hours.
Under the starry sky, the Moonlight, like a light veil, gently covered the two people sitting on the rooftop... "It's dawn..."
The first golden ray of morning sun shone on her eyelids. Shinobu Kocho woke up smiling through her tears, having been immersed in the genjutsu world, reluctant to leave.
"Ah~" Shinobu Kocho wiped the tears from the corners of her eyes, stretched, and after sitting up all night, her bones popped and cracked. "What a wonderful dream, Nagi-kun, thank you for letting me have such a good dream."
"You're welcome. If you can't sleep at night in the future, you can come find me again," Uchiha Nagi said with a smile.
He suddenly felt that what he said seemed a bit inappropriate, but before he finished speaking, Shinobu Kocho had already disappeared. Only his Sharingan caught a glimpse of her blush, red to her ears.
"So fast, comparable to Body Flicker Technique..." Uchiha Nagi muttered to himself. Although he hadn't slept all night, Uchiha Nagi was still energetic, perhaps because he had taken advantage of a girl.
A moment later, the reclusive Mist Pillar, Tokito Muichiro, arrived.
These past few days, Tokito Muichiro had been coming daily to learn from Uchiha Nagi, with Uchiha Nagi consulting him on swordsmanship and Breathing Technique, and he consulting Uchiha Nagi on Chakra.
It was surprising that within a few days, he had mastered the Shadow Clone Technique and was integrating it into his Breathing Technique.
Moreover, Muichiro also proposed whether it was possible to use the Body Replacement Technique when attacking an enemy with a Shadow Clone, and then switch between the physical Shadow Clones?
Because the demons in this world can only be decapitated with a nichirin blade, if a Shadow Clone doesn't have a nichirin blade, even if it attacks, it won't have much effect.
And if this method works, then when several Shadow Clones attack together, an instantaneous Body Replacement Technique switch could allow one nichirin blade to kill a demon, without needing to prepare several blades for the Shadow Clones to use.
After all, everything about a Shadow Clone is formed by Chakra nature transformation, and Chakra cannot transform into a physical nichirin blade. Uchiha Nagi was stunned. In the entire Ninja World, including Naruto with his Multiple Shadow Clones, no one had ever thought of this idea, because for Ninja, who are high-offense and low-defense, a Shadow Clone could kill an opponent by forming a Rasengan or using a kunai.
But using Body Replacement Technique with Multiple Shadow Clones, wouldn't that be somewhat like Flying Thunder God?
The real body hidden among numerous Shadow Clones, ready to use Body Replacement Technique to switch at any time, was definitely Flying Thunder God, just with a shorter range.
"Interesting, your suggestion is truly interesting. Let's research it together. Perhaps in the future, it will become a trump card against demons," Uchiha Nagi said enthusiastically.
"By the way, are you still going to try the Water Prison today?" Uchiha Nagi asked.
"Yes, I am. This is a weakness in the Breathing Technique. If we encounter a demon with this type of Blood Demon Art, we'll be doomed, so it's best to overcome it in advance," Muichiro nodded.
This was something the two had discovered during a previous spar. Muichiro, when trapped in a Water Prison, couldn't breathe. If he couldn't use his Breathing Technique, a Pillar would be nothing more than a lamb to the slaughter.
Uchiha Nagi couldn't help but wonder if Kisame were to unleash a Great Waterfall Technique, followed by a Grand Water Prison Technique, would it wipe out all the Pillars? After all, unable to breathe underwater, their strength would drop by ninety percent.
So, a Water Prison Ninjutsu with a ten-meter diameter appeared. Muichiro was trapped inside, trying to find a way out. When he could no longer hold his breath, Uchiha Nagi would release the Ninjutsu and let him out.