Invincible in the world, starting with the ghost curse

One time, the elder brother was attacked by a ghost while camping in the wild. When the evil ghost was about to attack his brother, the younger brother appeared. He easily killed the evil ghost and rescued his brother.

Seeing his younger brother's powerful appearance, his internal organs were once again burned with jealousy and hatred. He abandoned his wife and children without hesitation and joined his younger brother's Demon Slayer Corps. His younger brother taught every member of the Demon Slayer Corps the breathing method, but he could never learn his younger brother's breathing method. He could only settle for the next best thing and chose a derived breathing method.

Later, strange patterns appeared on the elder brother's body, and his strength improved by leaps and bounds, but he was still unable to see his younger brother's back.

In order to break the short-life curse of the strange patterns, he cut off the head of the current Demon Slayer Corps lord and handed it to the Demon King Muzan Kibutsuji, and obtained the blood given by the Demon King, and became an evil demon.

Decades later, the elder brother, who had not aged at all, met his younger brother, who was very old. He was surprised that his younger brother was not affected by the curse, as if he was always superior to ordinary people. He attacked his younger brother out of jealousy.

The younger brother just burst into tears and swung his knife, seriously injuring his brother.

"How pathetic, brother!"

After the younger brother drew his knife, the older brother thought he would be killed in the next move, but his younger brother had already died of old age while still holding the knife.

The elder brother no longer had the chance to surpass his younger brother. He angrily cut his brother's body in half, and the piccolo hanging around his waist was also cut in half.

Seeing the flute that he had cherished all his life, the elder brother seemed to see the look on his face when his younger brother made the promise. He shed tears and put on the flute.

To this day, the flute still hangs around his waist.

Kokushibo's remaining hand stroked the remaining half of his waist, where a piccolo was hanging.

"Yeah, when did I forget all these things..."

Kokushibo, or Tsugakuin Iwakatsu, muttered to himself, not even paying attention to the Kasumi Pillar Tokito Muichiro who was facing a formidable enemy on the opposite side.

Six eyes raised up and looked at the Haze Pillar Tokito Muichiro in front of them, scanning every inch of muscle on his body with the clear world.

“You are my descendant…”

“Nonsense.”

"When I was still human, my name was Tsugikoku Iwakatsu, the head of the Tsugikoku family. I left behind a bloodline. And Tsugikoku Yoriichi was my younger brother."

Muichiro couldn't tell the real from the fake, he just held the Nichirin Sword tightly.

"So what? Are you trying to use our blood connection to make me give up on killing you when you're so weak now?"

That's right, what Naruto didn't expect was that the Upper Moons injured by Kamiya Seiichi recovered very slowly. The one, two, and three Upper Moons were all seriously injured, especially Kokushibo.

Half of his body had completely disappeared, with flesh and blood intertwined and wriggling in an attempt to repair his body. However, every time it recovered a little, there would be an intense burning sensation, and the speed could not be increased at all.

"A red sword... and it's even stronger than Yoriichi's."

"You are right. I am very weak now. If that is the case, why don't you come forward and kill me?"

Kokushibo's six eyes exuded a chilling sense of oppression, and his calm tone was as if he was not judging his own life.

Recalling the past,

Muichiro had seen him attack before and knew that swords would emerge from Kokushibo's body, so if he approached rashly, he might be killed.

But! The chance of him being seriously injured is rare, so we must try!

The fog began to spread, and Muichiro's figure disappeared in the increasingly thick fog.

"Kasumi's Breathing——Seventh Type: Oboro!"

Every move is a sure kill! In the rosy glow, Muichiro moves sometimes fast and sometimes slow, which makes people visually confused. He holds the knife in both hands and is in a running posture.

boom!

Kokushibo held a knife in his left hand, and blades grew all over his body, bursting out countless sword auras in all directions. Muichiro's movements were clearly visible to him in the transparent world, but he was very weak now. Once someone got close to him, he might be beheaded, so he couldn't take any risks.