Zenitsu was so agitated that his face was flushed with blood, his eyes were bloodshot, his eyebrows stood up high, and his hair shot straight up, giving him the look of being consumed by rage.
Of course, this guy's motivation was a little questionable.
"Eek~"
The sharp sound pierced through the ward. It was hard to imagine a man... no, it was hard to imagine any human could produce such a sound.
Mizuki covered her ears with a look of discomfort. She knew it... these idiots.
Kochou Shinobu's expression was also slightly displeased. Shouting loudly in a hospital ward—although there weren't many injured people here, the entire Butterfly Mansion had more than just this one room.
The penetrating power felt strong enough to overturn the entire Butterfly Mansion and the Demon Slayer Corps with it.
Before Kochou Shinobu could even scold them, hurried footsteps echoed in the hallway outside.
"Are you trying to kill us?!"
Kanzaki Aoi's frantic voice appeared at the doorway.
She was panting heavily, glaring furiously at Zenitsu.
And beside him was Inosuke, innocently picking his nose.
Inosuke: "What do you want?"
Kanzaki Aoi snorted unhappily. These two idiots, she knew exactly who it was just by hearing the sound.
Tanjirou awkwardly waved his hands on the side, looking embarrassed and unsure what to say.
Nezuko, meanwhile, was somewhat overwhelmed by Zenitsu's enthusiasm.
Zenitsu, however, seemed to be trapped in his inner world, completely oblivious to Kanzaki Aoi's sharp rebuke.
Cupping his cheeks, he shouted with a perverted look: "So cute! I'm going to die!!!"
Kanzaki Aoi looked utterly defeated: "Please, go ahead!!!"
"What is it, little Nezuko? You're talking?" Zenitsu rushed forward with a lovestruck look and grabbed Nezuko's small hand. "For me? Was it for me?"
"Did you work hard for me?"
"I'm so happy! When are we getting married?"
She spoke?
Kanzaki Aoi froze for a moment, but having no time to think, she glared fiercely: "Please move aside!"
Mizuki covered her face, speechless. She was about to break down too.
Why did these people create such a dramatic scene whenever they were together?
Mizuki looked at Zenitsu Agatsuma with a dangerous glint in her eyes.
Wouldn't it be better if this guy just passed out again?
Zenitsu shivered, and while holding Nezuko's small hand, he subconsciously glanced around nervously.
Quite perceptive.
Mizuki clicked her tongue.
But only for a moment, Zenitsu revealed his true nature, looking at Nezuko with a lovestruck expression.
"Nezuko is so cute~"
Nezuko had somewhat adapted to his behavior, smiling as she called out, "Zenitsu Big Brother."
Kanzaki Aoi covered her mouth in surprise: "She spoke!"
She really spoke!
...No, wait, it's actually normal for demons to talk, isn't it? Mizuki Young Miss and Tamayo Young Miss can both talk.
Thinking about it that way, Nezuko was the strange one.
However, the long time they spent together had made Kanzaki Aoi accustomed to the non-speaking Nezuko.
Noticing Kanzaki Aoi's expression, Nezuko smiled and called out, "Aoi Big Sister."
Although it wasn't obvious, Kanzaki Aoi was already seventeen years old.
Zenitsu was the oldest of The Three Little Ones at sixteen, Tanjirou was currently fifteen, and Nezuko was fourteen, the same age as Tokito.
It was actually normal for them to be called Big Brother and Big Sister.
Kanzaki Aoi nodded dazedly, still reeling from the fact that Nezuko could talk, while Zenitsu... Zenitsu's face stiffened, and his excited voice suddenly stopped.
Just as Mizuki wondered what had happened, Zenitsu trembled all over twice.
Mizuki immediately felt dread and covered her ears expressionlessly.
"Eek!!! So cute!!! I'm going to die!" Zenitsu's face was flushed with blood, nosebleeds streamed out, and he screamed loudly.
Kanzaki Aoi's expression twisted slightly.
This! Bast... "You are indeed going to die." At that moment, a cold voice echoed throughout the ward.
"Who!" Zenitsu turned around in a panic.
What greeted him was a fist the size of a sandbag.
Kochou Shinobu had a tick mark appear on her cheek, straightened her posture, and struck in a boxing stance, smashing her fist into Zenitsu's face.
"Puwah~"
Zenitsu's nosebleed gushed out, and he flew backward out of the ward, rolling several times in the courtyard, kicking up a cloud of dust, before finally crashing into the wall and falling face-down on the ground with his rear end up.
So... so strong!
Everyone watched the scene with trepidation.
Kochou Shinobu turned around with bursting veins on her forehead and a wide smile: "Does anyone have an objection?"
Everyone shook their heads in unison.
To be able to force Kochou Shinobu to unleash such powerful force, this guy truly deserved to be called a Genius.
"Cool." Mizuki praised unreservedly, giving a thumbs-up.
Kochou Shinobu hummed, her earlobes slightly red: "Honestly, making such a fuss in an important place like the Butterfly Mansion."
"They truly don't respect me."
Nezuko weakly pointed at Zenitsu: "Zenitsu Big Brother isn't going to die, is he?"
Kochou Shinobu's smile reappeared on her face: "Well, at most, he'll be paralyzed from the waist down."
How terrifying!
With Zenitsu dealt with, Inosuke, bored and picking his nose, walked towards Nezuko.
Kochou Shinobu looked on with a dark expression.
Inosuke extended his hand: "I am Inosuke."
Nezuko smiled and extended her hand: "Hello, Inosuke Big Brother."
"Oh! If you need anything, tell me!"
"Mhm mhm."
This interaction was surprisingly proper.
Only then could Kanzaki Aoi ask her question: "Shinobu Young Miss, why is Nezuko talking?"
Kochou Shinobu explained: "Because Tamayo Young Miss has developed the human transformation medicine, Nezuko has turned back into a human."
"human transformation medicine?!" Kanzaki Aoi's eyes widened.
She knew that Tamayo Young Miss had been researching something near the Demon Slayer Corps, and she had gone there with Shinobu Young Miss before.
But because she was busy with matters at the Butterfly Mansion, she hadn't had much chance to pay attention to things over there.
That kind of medicine could actually be created!
Didn't that mean that from now on, they would be able to save more people?
Even if an evil demon appeared, they could forcibly turn them back into a human by injecting the medicine.
It was only then that Tanjirou finally reacted: "In that case, do all those demons have a chance to turn back into humans?"
He had been too excited about Nezuko's situation just now to react fully.
Mizuki lowered her gaze slightly: "Tanjirou, not everyone is worth saving."
Just like she had never considered turning Kokushibou back into a human.
Setting aside how many people he had harmed, becoming a demon was his own choice.
Such a person is not qualified to become human again.
Even if he finally realized his mistakes, Mizuki would not simply let him live as if nothing had happened.
Tanjirou paused, and his mood became low.
This child... truly thinks of others.
If it were others, they would probably think it best if those things all died out.
Nezuko keenly sensed her older brother's mood, reached out, and gently patted Tanjirou's hand.
Kochou Shinobu shook her head: "It is regrettable that this medicine is difficult to mass-produce."
Too many things were needed for it, including contributions from Mizuki, Nezuko, and even the blood of the Twelve Demon Moons.
"I see."
Upon thinking this, Tanjirou's mood slightly recovered despite his disappointment.
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