They won the Holy Grail War, but this turned out to be the Virtual Tree Universe.

Chapter 38: A Breathing Technique That's a Chicken Rib to Them, But a Treasure to Me (Seeking Recommendations and Further Reading)
Looking at Shinobu's cone of light, Dan Lei could roughly guess the reason for its formation. This girl probably hoped that he could come back one day, and in the end, she waited for him her whole life.

However, Danlei did not regret his choice at this time, because he knew very well that neither a long-lived species nor a short-lived species would be happy together.

When Shinobu Kocho discovers that Danrui never ages while she herself grows old, she will become increasingly self-conscious, even if she doesn't start to doubt him.

Danlei watched his beloved grow old and die day by day, and he was completely powerless to stop it. His spirit would inevitably be worn down, and he would continue to live for hundreds of years with regret.

So, upon seeing this cone of light, Dan Lei only felt a little guilty. He should have made things clear with Shinobu Kocho before he left, as it was really bad to delay her life like this.

However, even if Dan Lei were given the chance to travel back to Demon Slayer again, he wouldn't make a special trip back. Let's just keep this light cone as a memento.

After studying the two light cones, Dan Lei returned to the outside world. With a thought, the light cones and conceptual costumes from the Holy Grail Flower Sea space appeared in front of him.

Leaving aside the use of the light cone for now, in reality, this thing has no destiny restrictions because its power comes from memories, and there is no such thing as a memory that can only be used in a certain destiny.

As for concept costumes, they are essentially like sealing items inside cards, and Danlei can easily turn the cards into physical objects.

Furthermore, after testing, it was found that these items, even after being taken out, could not be easily modified back into concept costumes.

However, the extent of the modification still needs to be tested. After all, Danlei hasn't tested whether completely dismantling the item and using its materials to create a new one can transform it back into a concept costume.

But there's no rush. We can study the concept costumes slowly. I need to test whether the breathing techniques I learned from Demon Slayer are effective in Rafu.

It's important to understand that since the Luofu is essentially a starship, it doesn't have ley lines.

Because he has not been active in the star system for a long time, there is not much stellar energy around him, so even if Dan Lei wanted to try to switch careers to study celestial magic, he could not.

The Great Source of Luofu is the imaginary energy of the Hunting Destiny that the Hunting Star God has opened infinitely. Therefore, the Holy Grail could only be charged in Luofu by Danlei's own Small Source and the elemental power that existed in the surrounding space.

This directly resulted in Danlei only being able to fill the Holy Grail once every two hundred years.

If the Holy Grail continues to charge at this rate, Dan Lei will not be able to fully charge the energy for his second transmigration even when the Star Core Essence arrives. The only solution is to leave Luofu and live on another planet with a large energy source.

However, the management of immortal beings in the Immortal Ship is very strict. The Immortal Ship people and fox people, who are the most numerous, are strictly controlled, not to mention the Wisdom People, who are already a rare species.

It won't be easy for Dan Lei to leave Luofu through proper channels unless he's expelled under special circumstances like Dan Heng.

In reality, being expelled was completely impractical. Danheng was implicated in his past life, and his memories were also illegally awakened by the Dragon Master.

If Dan Lei is to be replaced, minor mistakes will result in imprisonment, while major mistakes will result in being stripped of his scales. There is definitely no option of expulsion.

Therefore, Dan Lei can only hope that the breathing technique will still be effective in Luofu, so that he will at least have a chance to travel through Luofu again before the Star Core Essence arrives.

After all, the invasion of Luofu by Huanlong was both a danger and an opportunity. Unless Danlei was prepared to just coast along in Luofu, he would definitely want to try to participate.

So, Dan Lei began to activate his breathing technique, taking a shallow breath in Luofu. Here, Dan Lei was being so cautious entirely because he had suffered too many losses before. He knew firsthand how violent the power of the Luofu Unclaimed Hunting Destiny could be absorbed directly; he was second to none.

This is because it is an experience I have gained over the past two hundred years, through countless serious injuries.

However, when Dan Lei first took that breath, he didn't feel much, but soon he felt a stinging pain, though it was within a tolerable range.

This is actually normal. The people of Luofu also need to breathe. The surrounding imaginary energy cannot be so violent that inhaling it would harm them.

Normally, when a Luofu person inhales air rich in imaginary energy, the imaginary energy is inert and will be completely expelled from the body with each breath.

Danlei had been injured, mainly because his magic circuits would activate and convert the energy of these unclaimed hunting imaginary numbers into magic power within his body after absorbing them.

At the same time, the magic circuit performance of Dan Lei's current body is so excellent that even if he absorbs the least amount of imaginary energy, the activated imaginary energy will overload the magic circuit.

However, no matter how strong the internal organs are, they are still more resilient than magical circuits similar to nerves.

Therefore, when the breathing technique takes effect and attempts to convert the inhaled imaginary energy into true qi, although it causes damage to Danlei, it is far from being unbearable.

Moreover, Dan Lei only took a shallow breath, which contained a limited amount of imaginary energy, unlike absorbing directly from an infinite and massive energy source. Therefore, it caused almost no continuous damage.

In addition, Dan Lei had been training his internal organs and meridians for thirteen years in the Demon Slayer world, so they were not easily damaged. Thus, he withstood the initial impact of this wave of imaginary energy.

Then, this imaginary energy begins to be continuously converted into true qi, and then through the magic circuit into pure magic power.

In short, after circulating his internal energy through the breathing method, Dan Lei's eyes lit up.

Today I finally found a breakthrough in the problem of the magic power that had been troubling me in releasing magic in Luofu.

The breathing technique might not be very useful to the other people in Luofu, because the imaginary energy it absorbs from the air can also be obtained by ordinary people in Luofu through equipment. Moreover, they use this imaginary energy to power other things, and they don't need it for themselves.

As for the Destiny Walkers, they can obtain imaginary energy from their Destiny Path. Powerful Destiny Walkers say that the energy obtained from breathing techniques is useless, while weak Destiny Walkers say that learning this is far less efficient than obtaining imaginary energy through technology, so neither is useful.

But for Dan Lei, this was a divine skill. The existence of this breathing technique meant that the technology of converting imaginary energy into magic power within the body had made a breakthrough. He was no longer in a state of semi-sealed magic in Luofu, and the Holy Grail could also have a stable source of magic power.

Actually, if Heita were next to Danlei right now, he would definitely complain.

"You've been troubled by this mere imaginary energy conversion technology for two hundred years, what a waste of your talent."

But Dan Lei is extremely excited now. After instantly healing the slight damage to his lungs and internal organs with the power of abundant destiny, he immediately began to experiment and verify the specific process of converting imaginary energy using the breathing method. Then, he optimized the energy conversion scheme and path based on the process.

(End of this chapter)