Beiduliu County, Xiaoguan Village.

"Huhu...huhu..."

The cold wind howled, and a slender figure walked alone in the ice and snow. The series of footprints left by his footsteps were covered by the wind and snow, and the black coat behind him danced wildly in the wind.

Thirty years have passed since the decisive battle in Tokyo, and it is now the winter of 1945.

"rustle……"

The slender figure paused, raised his head and looked forward. His strong eyesight saw through the wind and snow a two-story wooden house located at the foot of Mount Untori. The weak firelight poured into the snow outside the house through the gap in the window.

The slender figure standing in the ice and snow took steps forward. Just when his boots were about to touch the ground, they suddenly turned into a black shadow and spread along the ground to the window of the wooden house. He quickly climbed up the wall and invaded the wooden house through the window.

In the wooden house, a white-haired old man was lying on the bed, covered with a warm quilt, his eyes closed, and he was sleeping soundly.

"Crack..."

There is a brazier on the ground inside the house, filled with red charcoal. A large amount of hot air rises from the brazier along with a wisp of soot, warming the room.

"Huh~!"

A gust of cold wind quietly blew into the house through the gap in the window, making the red charcoal in the brazier more active.

"clatter……"

Crisp footsteps sounded in the quiet room, and a slender figure in a black trench coat appeared quietly beside the bed, looking down at the white-haired old man on the bed.

"Hezai..."

After staring for a long time, the white-haired old man on the bed finally woke up, opened his eyes with trembling eyelids, and saw Yin Lumi standing beside the bed.

"Thirty years of absence, teacher."

Yin Lumi looked calmly at the white-haired old man on the bed.

"Everyone thought you were dead..."

A pair of cloudy eyes of Nintaki Sakonji stared at Yin Lumi. His left arm, which was as dry as rotten wood, stretched out from the quilt, raised it tremblingly, and touched the corner of Yin Lumi's clothes with his fingertips.

"But... thirty years... you still haven't changed at all."

His voice was hoarse and weak, no longer as strong as it was thirty years ago. Thirty years later, at the age of 100, he finally came to an end.

"This look?"

Yin Lumi raised his right hand and gently slid his fingertips on his cheek.

"In the past thirty years, I have traveled around the world, and this appearance has..."

While speaking, Yin Lumi's appearance changed rapidly, and in the blink of an eye he became a middle-aged and elderly man with white hair at the temples.

"Haven't used it for a long time."

Yin Lumi put down his right hand, and his appearance changed again from a middle-aged and elderly man with white hair to a twenty-year-old young man.

"This face is just a whim."

"For me, appearance is meaningless."

Lin Takizao looked at Yin Lumi's face that changed randomly for the last time, his lips moved slightly, and he wanted to say something, but he still closed his eyes.

He understood that Yin Lumi used this face just so that he could recognize him.

"it's over?"

After a long period of silence, Kintaki Sakon spoke again and asked in a hoarse voice.

"It ended thirty years ago."

Yin Lumi replied.

"Yeah?"

"That's good."

"In that case, I will..."

Before he finished speaking, the old man on the bed had stopped breathing and fell into a deep sleep.

"Farewell, teacher."

Yin Lumi bent down slightly and placed a sun-lun knife beside the bed. Then it turned into a ball of black smoke and floated out of the window, disappearing without a trace.

"Peng!"

The moment Yin Lumi left, the door to the room suddenly opened, and a red-haired middle-aged man rushed into the room with a panic look on his face. He immediately looked at Rinataaki Sakonji on the bed.

"teacher!"

Sensing that something was wrong, Tanjiro Kamado knelt beside the bed and reached out to explore Taki Sakonji's nostrils, but could not feel any breathing.

"teacher……"

Tanjiro understood that the old man on the bed had passed away, so he held the old man's withered left hand with both hands, and tears came out of his eyes.

"Tanjiro..."

Kurihana Rakana walked into the room, looked at Tanjiro who was kneeling beside the bed grieving alone, and couldn't help but step forward to hug him and give him comfort.

"Father!"

"Father, what happened?"

The voices of two teenagers sounded outside the door. After a burst of footsteps, two red-haired teenagers who looked very similar to Tanjiro hurried into the room, just in time to see their grieving parents kneeling in front of the bed.

"Grandpa is gone."

Two teenagers came to the bedside, and they understood that their grandfather Lin Taki had recently passed away.

"What's this?"

Suddenly, one of the teenagers saw a Nichirin sword with a black scabbard beside the bed on the other side and asked aloud.

"What?"

Tanjiro, who was crying, looked up when he heard this, and happened to see the Nichirin sword placed next to Nintaki Sakonji's hand.

"This is...Nichirin Sword?"

Kanahu stood up, reached for the Nichirin sword on the other side, and slowly pulled it out under the watchful eyes of Tanjiro and the two teenagers.

The first thing that catches the eye is the scarlet zigzag pattern that looks like blood.

"Blood red knife..."

Chanel's fingernails lightly scratched the blade. It was cold and sharp, and a strong killing intent wrapped around the blade. This was a famous sword that had killed countless people.

After looking at the front, the blade turned and four words were engraved on the back: Tezuka Kazuzai.

"This is...Tezuka-senpai's Nichirin sword!"

Shanahu looked startled, and a figure of Mohu flashed in her mind.

She and Yin Lumi only met once during the final battle. Thirty years later, the figure that had been almost forgotten became clear again through the reflection of this sun disk.

"Elder brother..."

"I see, senior brother has already arrived."

"Teacher, he can finally feel at ease."

When Tanjiro heard this, he looked at the peaceful sleeping face of his teacher, with a gentle smile on his face.

*

*

*

Time flies, forty years have passed.

Time came to 1985, on a small island in Southeast Asia. Yin Lumi was sitting in the room, meditating with his eyes closed, waiting as usual.

"Zizzi..."

Suddenly, the black and white TV screen placed in the room flickered and turned on automatically.

"It's finally here."

Yin Lumi, who was meditating, suddenly opened his eyes and turned to look at the TV that had automatically turned on.

"Oh, I kept you waiting for a long time, my old friend."

"Zizzi..."

As the screen flickered, a face that looked exactly like Yin Lumi appeared on the black and white TV screen. The only difference from before was that he had a pair of cat ears on both sides of his head.

"Why, you who travel the universe, do you like being a cat?" Yin Lumi naturally noticed the difference in him, raised the corner of his mouth and said with a smile: "Project G22-2050."

"I don't need that name anymore." The young man on the screen grinned, revealing a sharp fang, "My current name is, Erwin Carter."

"Erwin Carter Cat?"

Yin Lumi frowned, unable to figure out the connection between these three terms.

"I already exist everywhere and I don't exist anywhere."

On the black and white TV screen, the AI ​​named himself Erwin Carter said this.

"That's it, Schrödinger's cat." Yin Lumi looked at the other party, "I already underestimated you, but I never thought you could reach such a field."

"Elwin Carter!"

"Oops~ I didn't expect it to be like this." Erwin Carter touched his cat ears very humanely and grinned: "It seems that if an artificial intelligence life passes through a wormhole and is radiated out, it will

It became like this.”

"Or maybe I was just an accident."

"Anyway, where do you want to go now?"
To be continued...