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"Did you hear a strange drumming sound?" Zenitsu, trembling beside him, seemed to have heard something.
The raging fire hit the wooden house, instantly igniting a blaze, but it was extinguished in no time. It seemed a peculiar force covered the wooden house, preventing the wood from connecting and catching fire.
"This is troublesome. Do I have to compete with him in Chakra?" Uchiha Nagi frowned. This house was strange; fire wouldn't burn it. Did he have to use super-large Ninjutsu to destroy it?
Competing with the opponent in strength was clearly unwise. Demons had recovery capabilities exceeding humans, and Uchiha Nagi wasn't sure if there were underground passages. What if he destroyed the house and the opponent escaped through a tunnel?
Before Uchiha Nagi could finish thinking, Tanjiro put down the wooden box, asked the two children to help look after his sister, and rushed in.
"Ah, Tanjiro, wait for me, I'm so scared—" Zenitsu, teary-eyed, followed closely behind.
Uchiha Nagi shook his head. This imprudent approach would have led to countless deaths if not for the protagonist's luck. In the Ninja world, Tanjiro might have met the same fate as Nawaki, having the destiny of a protagonist but not the luck… To not lose Sun Breathing, Uchiha Nagi also followed closely. After entering the house, Uchiha Nagi frowned, because Tanjiro, who had just entered, had already disappeared. An alternate dimensional space house?
If it were in the past, he would never have entered such a house, but now with Mangekyo and Susanoo for absolute defense, Uchiha Nagi was naturally fearless.
However, Uchiha Nagi still cautiously sent out several clones to scout ahead; better safe than sorry.
He carefully walked into a room, only to find the gravity direction inside was strangely reversed.
The ground seemed to be on the ceiling. Uchiha Nagi lightly jumped with the gravity and stood steadily on the ceiling. No, for him, it should be the ground.
The demon in this house could change directions and even change rooms… But no matter how it changed, it was useless to Uchiha Nagi, because he could firmly adhere to the walls with Chakra.
Just as Uchiha Nagi was about to look for Tanjiro, a sinister voice came from the side.
"What good luck, there's another rare blood, hahahaha~"
An ugly figure walked in, a demon with eyes on its stomach and a head full of mouths.
"Hahaha, you're mine."
It opened its gaping maw and rushed to bite Uchiha Nagi. Uchiha Nagi frowned; the opponent seemed to only use brute force… Boom!! After several explosions, the muscular demon's body was directly blown into several pieces, while Uchiha Nagi stood on the other side.
It turned out that Uchiha Nagi had used his Sharingan to cast a Genjutsu on him, then threw several kunai with Exploding Tags. The opponent joyfully swallowed them, mistaking them for flesh. Finally, the Exploding Tags detonated from inside its body, blowing it to pieces.
"No wonder Itachi likes to use Genjutsu. Sometimes solving someone is really simple, no matter how strong the opponent is, as long as Genjutsu is their weakness…" Uchiha Nagi muttered to himself, and a pitiful person named Deidara immediately came to mind.
He possessed the power to flatten any Village, yet he was completely suppressed by Genjutsu.
"What's going on? I clearly killed you. Why are my head and body shattered?" The opponent asked incredulously.
"The dead don't need to ask too many questions." Uchiha Nagi calmly walked up to him, swung his short sword, and cut his head from his broken body.
"Hahaha, it's useless, without a nichirin blade, you can't kill me~" The remaining head of the demon laughed maniacally, looking at Uchiha Nagi with scorn.
Uchiha Nagi grinned, revealing two rows of white teeth, "It's alright, you can regenerate, right? I'm also curious if you truly have no limits…"
Then he swung his short sword, cutting the still-wriggling flesh into several pieces again—
"Bastard~" The demon male's face was ferocious, blood and flesh began to grow from his neck. However, in the next second, Uchiha Nagi swung his short sword and cut off all the parts that had just grown out.
After cutting it a second time, probably due to the lack of a head to command, the opponent's body stopped moving.
However, the head Uchiha Nagi held in his hand was still struggling… "Have you heard of the Ship of Theseus? I'm very curious, I wonder if, after being cut at the neck by an ordinary blade, your body will grow a new head, or if a new head will grow a body."
Uchiha Nagi, with some interest, raised the opponent and looked into his eyes, "Then, are both of you you? Will you fight with yourself?"
Then Uchiha Nagi pieced the opponent's body together, and was surprised to find that the limbs could still self-connect, truly powerful vitality.
"You… are you a devil?"
— — — —
Thump!
Thump-thump!!
At this moment, Tanjiro was in a room, being tormented to near death by a demon with several drums on his body.
Also being tormented with him was a member of the Demon Slayer Corps wearing a boar's head mask.
As long as the opponent beat a drum once, the room would rotate. Tanjiro couldn't use Chakra to grip the ceiling, so he could only fall continuously with gravity. And while the opponent beat the drums to rotate the room, he also attacked him with invisible sharp claws.
"Damn it, my foot, the fracture hasn't healed yet." Tanjiro gritted his teeth, the pain affecting his strength.
[Water can transform into any shape]
Just then, in Tanjiro's mind, the words of Sakonji Urokodaki, his teacher who taught him Water Breathing, appeared.
"That's right, Water Breathing's Ten Forms can adapt to any environment, even with a fractured foot." Tanjiro suddenly had an epiphany, as if everything clicked into place.
Immediately, his inner strength erupted, and Tanjiro was no longer so disheveled. He constantly twisted his body using Water Breathing, and could even occasionally use sword techniques to block the opponent's invisible demon claws.
The drumming male, Kyogai, frowned, "I must eat the rare blood quickly, damn bugs, damn bugs…"
Kyogai angrily opened his eyes, and two characters were imprinted deep in his pupils: Lower Rank. However, there was an 'X' scar over them, indicating he was the eliminated Lower Rank Six.
"Blood Demon Art — Swift Drumming."
The drumming male, Kyogai, began to furiously beat the drums on his body with a ferocious expression. The room started to spin wildly, and countless sharp claws attacked along with him.
[PS: In this part of the story, Tanjiro's leg is fractured, but he can use Water Breathing to strengthen his leg muscles to maintain combat.]