Invincible in the world, starting with the ghost curse

A messenger raven flew swiftly across the sky from afar. A soldier took the letter from the raven, opened it, and handed it to Kamiya Seiichi.

The content is about the approximate location of one of the Upper Moons having been confirmed, and there is clear information that Kasumi Pillar Muichiro is fighting against Kokushibo. Ubuyashiki Teriya hopes that Kamiya Seiichi can judge for himself whether he needs to go to support the battlefield.

They already knew the general location, but they hadn't yet mapped it. Otherwise, headquarters wouldn't have been unaware that both Gyoumeishi and Fushigawa Sane were on the Kokushibo battlefield. That didn't matter, though. With both Gyoumeishi and Fushigawa Sane over there, Kokushibo's current level of injury meant it would be difficult for him to handle two significantly improved pillars, let alone four.

"We're going to continue our journey, everyone, to support the other pillars."

"follow me!"

After saying that, he flew away. Kamiya Seiichi was not worried about any traps. No matter how many tricks you use, I will break them with my own strength. His strength was too terrifying. Even if Muzan really made further progress, he would not be able to say that he could definitely deal with Kamiya Seiichi. Therefore, Kamiya Seiichi was more worried about Muzan's escape rather than resistance.

"Go find them first!"

The story takes place in the distant past.

During the Warring States Period, a samurai family gave birth to a pair of twin children. The elder brother became the eldest son in the family, but the younger brother was hated by his father because he was born with a strange "mark" on his head. His father even wanted to kill the child at one point, but was stopped by the child's mother.

But his father did not give up and stipulated that his younger brother must go to the temple to become a monk when he turns 10 years old.

The two brothers lived in different rooms, wore different clothes, received different education, and even ate different foods. Perhaps because of this, the younger brother would hug his mother tightly whenever he saw her. This made the older brother feel sorry for him.

The elder brother would also secretly run to play with his younger brother, but he would be beaten by his father if he found out. The elder brother was afraid that his father would find out if he gave his younger brother something he had, so he made a flute for his younger brother and told him that if he needed help, he could blow it and his brother would definitely come to help him.

The elder brother's goal was to become the strongest warrior. He always studied hard and practiced diligently, believing that he could achieve this goal through his own efforts. While the elder brother practiced swinging the sword, the younger brother would watch from the side.

By chance, the younger brother showed extraordinary talent and defeated his father's followers as soon as he got the wooden sword.

The elder brother then understood that his younger brother, whom he had always felt sorry for, was actually better than himself. He had worked very hard, but his progress was as slow as a snail's compared to his younger brother.

After their father learned about the younger brother's situation, the brothers' positions completely reversed. The family business was inherited by the younger brother, and the older brother moved into the room that was only three tatami mats. In three years, the older brother would replace the younger brother and be sent to the temple, never to realize his dream of becoming a samurai.

However, the younger brother found his elder brother and said that he would leave for the temple soon and that he would cherish the flute his elder brother had given him.

Later, the elder brother accidentally read the diary left by his mother and learned that his younger brother had known everything for a long time and that he had been showing himself off to him like a clown. From that moment on, the elder brother was extremely jealous of his younger brother and hated his younger brother's genius from the bottom of his heart.

From then on, the friendship between the two brothers was separated by the cliff called "talent".

The younger brother did not go to the temple. Instead, he disappeared without a trace. When the brothers met again, it was already more than ten years later.