Demon Slayer: Upper 0 seems to be a waste

Recovery is a long process that cannot be shortened. In this special state, Muzan does not trust his useless subordinates, and he himself does not want to and dares not show up in front of others.

So naturally, Rinkou, who shared a room with him, became the only suitable choice.

Fate plays tricks on people and also on ghosts.

The ghost that was always thought to be of the least practical use, in this special situation, became the most useful existence.

Muzan knew that Rinko was not good at fighting. But after studying with Kokushibo for so long, he felt that Rinko at least had the ability to hunt on his own, and killing a few humans would not be a difficult task for him.

Although Muzan has never seen Rinko kill anyone.

When night falls, Rinko wakes up and stands up and walks out of the house. The night has never been so long, and it is a time that can only be waited.

When Lin Guang stepped into the room when the moon was hanging in the middle of the sky, and saw the man behind Lin Guang carrying a basket of things, who obviously had grabbed it from someone's house, it would be a lie to say that he was not surprised.

Then Rinko would carry the empty big basket and sit by the wall at the door, sitting quietly, not eating or asking questions, just waiting for Muzan to devour those people, then stand up and do the same thing again.

The night passed in this cycle. Every time he came back, carrying the human corpse, Rinko's legs would shake. For Rinko, this was not an easy job, but he still did it. Muzan didn't even need to ask, he knew why, because his body needed such a large amount of energy. That was all.

When the day breaks, Rinko will sleep quietly. He prefers to stay next to Muzan's legs. Muzan sometimes eats his flesh and sometimes gives him his blood, but Rinko will only sleep at dawn. All his perceptions of the outside world are almost closed. To Rinko, it doesn't make any difference whether he eats or is eaten.

When he woke up, everything would be the same as it was in the morning. Then he would go hunting, and the cycle would repeat itself.

Rinko doesn't like fighting, hunting, or killing, but Muzan needs to eat humans to recover.

"Injured people need medicine, and hungry people need meat. Medicine doesn't necessarily make you better, but meat can definitely fill your stomach. Injured ghosts don't need medicine, they only need to eat meat to get better. How wonderful!"

Rinko, who was sitting at the door at that time, looked at Muzan with an unconcealed smile on his face and said so.

----

On such days, Muzan discovered something he hadn't noticed before, something he'd hardly noticed before. Rinkou's resilience was immense, a conclusion Tamayo had previously drawn, but Muzan hadn't truly grasped its significance. This resilience gave him an equally robust recovery ability, allowing Rinkou to absorb more blood and manage it without collapsing. While this was certainly a positive development, it wasn't something Muzan was particularly interested in.

The really interesting thing is that this property does not only apply to Rinko himself, his flesh and blood has the same effect. Devouring Rinko's flesh and blood will make his recovery progress slightly, and this progress requires an unknown number of times more human flesh and blood.

And when Muzan gives more blood and endures it, this effect will be enhanced. This is a virtuous cycle.

It is rare for Muzan to receive such positive feedback from a demon.

Especially compared to most ghosts who are either dying or causing trouble, and rarely achieve anything even if they do something, Lingguang is like a gift from God to him.

No, it should be said that this is what he deserves. After all, it was he who chose to keep Rinko, and it was also he who turned Rinko into a ghost. This is a gift he created himself, and he deserves it.

Rinko, who was still sleeping, didn't know what conclusion Muzan had come to, nor did he know what impact all this would have on him. He was just immersed in his own dreams and only opened his eyes when night fell. When he rubbed his eyes and stood up to go out, he was stopped by Muzan.

"That's enough. Let's go."

The backpack that had been used for a long time was thrown away casually. The backpack, the house, and everything here were burned by a fire. Above the flames, two figures, one big and one small, turned and left.

For the first time in a long time, Lin Guang no longer needed to run on his own two feet. Instead, he was lifted up and could look at the surrounding scenery. He just had to remember to hold on to this arm.

Muzan took Rinko to many places. They saw many ghosts and many people. Some people turned into ghosts, and some were eaten.

This was a long period of wandering. It was Lingguang's first experience of traveling. They would stop to rest during the day and wander around at night. Spring, summer, autumn and winter, these days passed year after year.

Muzan would not stay in one place for too long, nor would he go to a too crowded place. It was as if he was hiding from something, but Rinko didn't know what he was hiding from.

Later, during a break, Muzan finally told him that he had met a very dangerous man before. He also emphasized to him that the man had red hair and red eyes, a flame pattern on his forehead, and wore earrings.

Lin Guang is not good at remembering faces, so this trait makes him create a fictional image in his head. Why does it sound a bit like Kokushibo... Maybe it's an illusion.

To be fair, Rinko felt that he didn't need to worry. After all, he couldn't go anywhere. He was always carried around by Muzan as if he was still breastfeeding. There was no chance that he would run into that evil spirit.

Lin Guang thinks that Muzan's brain is very useful. Muzan can remember a lot of things, many people, and knows a lot of knowledge. Sometimes they will live in remote places for a period of time, and occasionally Muzan will pick up the reading activities that they have not done for many years.

But Lin Guang's brain was not so useful. Those difficult-to-recognize and seldom-used words were completely forgotten over a long period of time. At this time, the hand would hit him on the head as a warning.

"I'm planning to promote some ghosts... let some stronger ghosts get more blood. What do you think of forming a team to deal with those ghost hunters?"

Lin Guang has no interest in how to manage a large group of ghosts, and he can't come up with any plan, considering that one of Muzan's educational philosophies for him is: when adults are talking, children just need to keep quiet and do their own things.

So Rinkou nodded silently, and Muzan was very satisfied with his reaction, and the hand turned to touch his head again.

In fact, Rinkou didn't understand what the so-called Twelve Demon Moons were at that time.

But later he understood. After who knows how many years, Rinko met Kokushibo after a long time. He reported the news of a person's death. Rinko had never heard of that name, but Muzan looked very happy. He thought that must be a good thing. The death of a person could make Muzan happy, which sounded worthwhile.

-

Children were supposed to stay alone when adults were talking, and even though Rinkou was already an adult according to his real age, he still looked like a child, and they treated him like one.

After finishing his conversation with Muzan, Kokushibo came over to look at him. Rinko raised his head. The six eyes were as oppressive as ever. He looked at the pair of eyes in the middle.

There were words written in his eyes, and he looked to the right and then to the left.

"One. Upper rank."

Fortunately, it was a word he knew, so his brain escaped unharmed.

Lin Guang breathed a sigh of relief in his heart.

"It's the waxing moon. The twelve demon moons are divided into upper and lower moons, with six in each."

Muzan's voice came from the other end, and Rinko nodded and said "oh" in sudden realization.

"Does this mean that Lord Kokushibo is the most powerful among those demons?"

Rinkou moved closer to Kokushibo and asked quietly.

"For now... that's the case. But other ghosts... can also initiate... a bloody battle... If they succeed... the order can be changed."

Muzan often said that Kokushibo had no flaws, except that he needed patience when communicating. Rinko agreed. When they were training with him, as soon as Kokushibo started lecturing, Rinko would be ready to stay awake all night. After all, Kokushibo had once spoken without stopping until dawn. This truly shocked the demon.

"But it was many years ago that Muzan-sama told me about the Twelve Demon Moons. After all these years, Kokushibo-sama is still an Upper Moon One. Doesn't that mean you are truly powerful?"

Kokushibo did not answer the question immediately. He thought for a while, as if considering how to answer.

And Lin Guang sat quietly and patiently, waiting for the answer.

Muzan looked at the two serious puppets from the side, chuckled lightly, and let them continue to stare at each other and reminisce about the past without uttering a word for a long time.

Anyway, he was in a good mood for the first time in a long time, so he just let them be.

----

When Lin Guang was carried to the eaves, he felt like a kitten raised by Muzan, being carried around every day and taken to various places, and being hit on the head regardless of whether he was praised or made mistakes.

As for why not a puppy.

Because the puppy can't climb onto the roof.