After playing with Hiratsuka for a while, Gu Yun returned home.

"Coming back?"

Except for the things of the monsters, his mother never restricts Gu Yun from anything, such as the relationship with Hiratsuka Jing and his life plan.

Anyway, in a word, as long as it's not like that stinky old man, she supports it.

"Mother, I'm going to rest."

"Well, good night."

Kan Iijima still has to work, and Nao Hayasaka accompanies her.

"Now, then, let's start learning spells."

Gu Yun's return to Tokyo does not mean that the cultivation of spells is over.

There is a way to practice like sailing against the current, and if you don't advance, you will retreat.

The cultivation method of fishing for three days and drying nets for two days is really when it is time to use it, and it is too late to regret it.

So Gu Yun set a plan for himself.

Be an ordinary person during the day, and take time out at night to practice spells.

Fortunately, because of the existence of spiritual power, Gu Yun's physical fitness has been greatly improved, and his requirements for sleep are also decreasing.

Judging from the current situation, 5 hours of sleep is enough for Gu Yun to recover all his energy.

"Master, what spell are you going to practice today?"

Xiaobai got into Gu Yun's arms, wagged its tail and asked curiously.

"Vision."

"Vision?"

Xiaobai heard this spell for the first time: "What is this?" ”

Gu Yun's spiritual power now is not too much, which is probably equivalent to the level of the weakest lower-level demon.

"The so-called spiritual vision is the magic of seeing demons and monsters."

"Isn't that just 'hell', this still needs to be practiced?"

It's not just Xiaobai, but even the three-tailed fox, Pranya, and Zashiki boy are a little confused.

Speaking of the ability to 'see the hell', it should be similar to Gu Yun's talent.

What is the point of cultivating it?

"Xiaobai, no, the art of spiritual vision is not that simple."

In fact, at the beginning, Gu Yun had the same idea as Xiaobai, he could see demons and monsters, and this still needed to be cultivated, wasn't that the instinct of a person with spiritual power.

However, this is not the case.

"I'll explain it to you."

Gu Yun conveyed the knowledge that his grandfather told him to Xiaobai and the three-tailed fox equation god: "To put it simply, the world we are in, in addition to the horizontal multiple spaces such as the present world and the hidden world, there are also several different dimensions vertically. ”

This dimension is not simply space, but more like the overlap of the three primary colors.

"Look."

Gu Yun took out three transparent plastic sheets of red, yellow and blue from the schoolbag he visited in the room.

"When yellow overlaps blue," Gu Yun turned on the light, overlapping two pieces of plastic paper and placing them under the light, "it will become like this." ”

"It's green!"

Xiao Bai showed a surprised gaze, and the fox tail began to shake quickly: "Why why?" ”

"It's a bit complicated."

Gu Yun didn't explain much, he just took the three primary colors as an example: "You just need to know that the world we live in is formed by the overlapping and fusion of multiple dimensions. ”

"Master, you mean to say that we live in multiple spaces," said the three-tailed fox, "It's just that we can only feel part of the world because of the different states, right?" ”

"That's right."

Gu Yun nodded and said, "Sister Fox, Xiaobai, Pranya, and Xiao Zashiki, although you are all monsters, the types are not the same. ”

The three-tailed fox and the white treasure master are both fox cultivators.

Prajna and Zashiki are more like spirits that have changed into their current appearance for various reasons.

"Grandpa said that humans and youkai are in different worlds."

Gu Yun picked up the stacked yellow and blue colored paper: "Suppose that human beings are green from blue and yellow. ”

"So, I'll pull the blue part now."

Gu Yun separated the two pieces of paper and said, "This blue part, we use it to refer to the soul, so what is the remaining yellow part?" ”

The gods looked at each other, and said with some hesitation, "Yes, corpses?" ”

"yes."

Gu Yun said: "What is alive is a human being, and once it dies, it becomes a corpse. ”

"We call the living people, but we don't call the corpses people," Gu Yun: "Maybe ethically, we will respect it and protect it." ”

"Essentially, a corpse is just a piece of meat that is starting to decay, a dead thing."

According to my grandfather, the world in which the human body lives is called the 'present world', which is what we often call the 'human world'.

When a person dies, he becomes a ghost, the so-called ghost of the Easterners.

"Ordinary people, it's like standing on the first floor."

"Monsters and ghosts, located on the second floor," Gu Yun: "So ordinary people can't see monsters and ghosts, and they can't touch them." ”

Just like Pranya and Zashiki Boy at this time, the two of them can't directly touch humans and things in the real world.

"Oh, I see."

Zashiki clapped his hands, then walked happily towards the wall, then passed through the wall, and came in with his head coming in from the outside: "Is it like me?" ”

"Yes."

Gu Yun smiled slightly: "In this process, Xiao Zashiki didn't use your demon power at all, right?" ”

"Hmm."

"My words, specific hexelism, can still be done."

The three-tailed fox said that she could use a special hexology that allowed her to travel through the shadows.

But it's not the same as the Zashiki boy.

Zashiki and Prajna themselves possess this spirit characteristic, while the Three-Tailed Fox and the White Treasure Lord need to use demonic power to carry out material shuttles.

"So in legends, there are often stories of demon foxes and white snakes being accidentally injured by humans and being rescued by people."

If the Three-Tailed Fox and the White Treasure Lord didn't use their demonic power, they would still not be seen by ordinary people, but they just couldn't see it.

It's like the three-tailed fox standing there, if someone runs in front of it, and the three-tailed fox doesn't intend to avoid it.

Then the other party will crash into the three-tailed fox, as if hitting a wall of air.

"This is the demonic power of youkai."

"Using demonic power, youkai can regulate their own state," Gu Yun explained, "As a spirit body, you can use demonic power to contact others. ”

"And Sister Fox and Xiaobai, you can use demonic power to make ordinary people unable to touch you."

Therefore, spiritual power, like demonic power, can also allow Gu Yun to come into contact with other worlds through specific forms.

"However, just like the force acts mutually."

"I can see and touch them," Gu Yun said, "In turn, they can see me and touch me." ”

Psicoscopy is not as simple as most people think, it is actually a forbidden art, and it has great risks.

"Then master, after you use psisight, will you disappear from our eyes?"

"No, it won't."

Gu Yun hurriedly shook his head and said, "I won't disappear." ”

"Psionics won't make those who could see me not see me."

"Psisight is to make things that I couldn't see before, and what I couldn't see, become visible."

If we compare dimensions to a ladder, ordinary people stand on the first section, and demons and ghosts stand on the second section.

Then Gu Yun and Iijima Huan, who have spiritual power, are actually stepping on ordinary people with one foot and the other on demons, so that their bodies can cross two steps at the same time.

This also means that Gu Yun's mother and son slapped him, whether it was a ghost boy or a three-tailed fox with a physical body, they would be hit.

Of course, the premise is that they don't use sorcery and don't dodge.

"I see."

It dawned on the gods that they were demons, but they had never studied their own nature.

In fact, this is not Grandpa Gu Yun's research either.

Psisight was the work of a close friend of my grandfather, who lived in Kamakura and was named Kotaki Ichiro, who had passed away only a few years earlier.

"What I have to do now is to take another step so that I can take a few more steps."

Theoretically, with Gu Yun's spiritual power, he should be born to be able to see all the worlds.

However, this is too dangerous.

Humans are self-protective animals, and Gu Yun is the same.

He was still very weak, so his body instinctively resisted receiving the extremely dangerous messages.

In Grandpa's words, even if Gu Yun didn't learn the Spiritual Vision Technique, as his strength increased, his spiritual sense would also increase greatly.

And at that time, Gu Yun didn't want to see more, but to cover his light, let himself see as little as possible, and reduce the snooping of those high-latitude monsters.

"So, the purpose of learning psionic vision now is not to see more."

Gu Yun said: "It's to be more quiet in the future." ”

Psisight can improve a person's spiritual sense, and in turn, it can also mask a person's light, which is why Grandpa taught him Psivision.

The old man wanted to protect his grandson and hide his traces.