Save Your Life Three Thousand

Night had fallen, and Hiruma tiptoed out of the old man's room. He skillfully climbed onto the roof and lay there leisurely, gazing at the starry sky.

Suddenly, one end of a ladder touched the rooftop, followed by the sound of footsteps on wood.

Creak, creak. He looked up to see Shinobu Kocho's small head peeking out from under the eaves.

"Hiruma, what are you doing?"

"Looking at the stars!"

As he spoke, Hiruma pointed below. Shinobu looked, and was so startled she nearly fell, the height was terrifying.

"Yikes yikes yikes!"

Just as she was about to fall, Hiruma grabbed her hand and pulled her up.

"Such a young age and you're already learning bad habits, only trying to take advantage. You pervert!"

A little angel Hiruma appeared, pointing at Hiruma and scolding him.

The next second, a little devil Hiruma kicked the angel away and said triumphantly:

"Idiot, what are you talking about? I was just saving her. What ulterior motives could I have?"

"Hiruma!"

"You're such a pervert, holding a girl's hand and not letting go!" Shinobu gave Hiruma a light whack on the head, saying indignantly, looking exactly like a little hamster.

"I was afraid you'd fall!" Hiruma quickly let go, his heart pounding as he glanced to the side.

And so, another little girl joined them on the roof of the Kuwajima residence.

After lying there for a while, Hiruma took out a small glass bottle filled with red liquid from his pocket. The bottle was shaped like a miniature, chibi version of Hiruma.

He handed the bottle to Shinobu, who looked at it with some confusion.

"What is this?"

"Save Your Life Three Thousand!"

"What?"

Shinobu's head was filled with question marks, her big eyes reflecting big questions.

"Take a sip when you're injured, it speeds up wound healing. It's a family heirloom medicine!"

"Of course, it's also effective when you're sick. It lasts for a month!"

Listening to Hiruma's explanation, the curious Shinobu, like a child trying to poke holes in his story, said with a serious face:

"But Grandpa Kuwajima said you were adopted. How could you have a family heirloom medicine?"

Hiruma: "Uh! (?_? )"

The old man really told her everything.

Also, are young girls nowadays so hard to fool?

Its formal name was Save Your Life Three Thousand, but its common name was Hiruma's blood.

He was afraid that if he said it plainly, people might not be able to accept it, so he came up with this name.

It was indeed bloody, but it truly saved lives, something Grandpa Kuwajima could vouch for.

"Oh dear!"

"You should keep it for yourself. We're all family, I wouldn't poison you, would I?"

Shinobu uncorked the bottle and sniffed it cautiously.

A faint metallic, rusty smell. It was blood.

"Your blood?"

"Mhm!"

"I have a special constitution and a large appetite, so my blood has a peculiar effect!"

"If you find it disgusting, then forget it. After all, having you drink my blood… it does sound a bit strange when you think about it."

Hiruma said this with a calm expression, as only demons drank blood and ate flesh; normal people would find it hard to accept.

"Then thank you very much. It really can save lives at critical moments!"

"You're quite similar to demons in that aspect!"

Shinobu accepted it readily. She had noticed Hiruma's peculiarity long ago, an instinctual reaction as a physician.

That night, during his fight with Bakotsu, she had personally witnessed Hiruma's wounds scab over in less than a minute. This was something no normal person could achieve.

"If you run out, you can ask me for more!" Seeing Shinobu accept it, Hiruma broke into a happy smile.

"This glass bottle of yours is really fun, it even has a face!" Shinobu held the chibi Hiruma, smiling sweetly and revealing a pair of faint dimples.

As soon as she finished speaking, Hiruma produced eight small glass bottles from between his fingers.

Smiling, crying, angry...

There were bottles with all sorts of expressions, all thanks to the glassblowing uncle in Mount Peach Town.

"There's plenty of that!"

Before Shinobu Kocho could reply, Jigoro Kuwajima's gruff voice boomed.

"You little brat, climbing on the roof again!"

"Not sleeping in the middle of the night, do you want to fly to the sky?"

Sigh!

Hiruma shook his head and said, "Shinobu, let's go to sleep, or I'll get beaten. You don't know, the old man really uses techniques when he hits me."

And so, Shinobu Kocho lived with the bickering master and disciple duo for a week.

A week later, the two bid farewell to Kuwajima Jigoro.

Their next stop was the Demon Slayer Corps headquarters. Tendo Hiruma had a grand ambition regarding Breathing Styles.

Since the five major Breathing Styles originated from the initial Breathing Style, Sun Breathing, by observing the five major breathing techniques, he believed that with his talent, he could achieve one thing, which was—

Reverse-engineering.

Demon Slayer Corps Headquarters.

A lanky young man in a black kimono stood at the entrance of the headquarters. He wore a smile as bright and cheerful as the sun. Just standing there, the young man was like a little sun.

The young man had long yellow hair, with the tips burning fiery red. Beneath his thick, dark eyebrows were a pair of bright, piercing eyes.

In addition to this fiery passion, there was a hint of gentleness in the young man's expression.

"Why hasn't Father's promised person arrived yet?"

Kyojuro Rengoku muttered. Ever since his father returned, he had always mentioned a young man named Tendo Hiruma.

Kyojuro himself had also developed great interest in this person he had never met, especially since the medicine he gave had stabilized his mother's condition.

It could be said that Kyojuro was already treating Hiruma as a brother.

While the passionate older brother waited anxiously, two small figures appeared on the horizon.

It was Hiruma and Shinobu Kocho.

"Wow, the headquarters is really well hidden. Without the Kasugai Crow, we'd definitely get lost."

Shinobu Kocho gazed into the distance, her face filled with irrepressible joy, as she would finally see her sister.

Hiruma wasn't as excited as Shinobu, as he knew too much.

But there was one thing he particularly liked: the scenery at the headquarters was truly beautiful.

Kyojuro stared intently into the distance. At this moment, Hiruma's image was being loaded into his mind.

Deep red hair, golden pupils, and a girl by his side.

Identity confirmed: it's the sworn brother I've acknowledged, my sworn brother from another mother.

"Hiruma!"

"Please accept my bow! Thank you for saving my mother!"

To Hiruma's utter shock, he watched as his older brother slid on his knees in front of him.

"What the heck! ((???|||))"

"Big Brother, doing that will shorten my lifespan!"

"Hm?"

"Big Brother?"

Kyojuro stood up, brushed the dust off himself, and, as if it were natural, threw an arm around Hiruma's shoulders, laughing heartily three times.

"Since Brother Hiruma acknowledges me as his older brother, let's become sworn brothers!"

Things were developing too quickly, and Hiruma's brain had already crashed.

He knew his older brother was passionate like fire, but he didn't expect the temperature to be this high. Meeting for the first time and immediately proposing to become sworn brothers.

"Stop, stop, stop!"

"This is the first time we're meeting."

"That's right, that's right!" Kyojuro nodded.

"Do you know who I am?"

"You're Hiruma!"

"I don't even know who you are?" If Hiruma didn't know the plot, he truly wouldn't know.

"I am Kyojuro Rengoku, twelve years old. My father is Shinjuro Rengoku, and my mother is Rengoku..."

Big Brother was an honest child, his sincere gaze shining like a living Buddha.

"Can we become sworn brothers now?"

Hiruma's head was still spinning. What kind of situation was this, "About Me Reincarnating in Another World and My Big Brother Insisting on Becoming Sworn Brothers With Me"?