Dragon Ball, simultaneously traversing countless worlds

"Generally speaking, the more powerful a demon is, the harder it is for it to come to the human world. Apart from those demons that possess special talents or come to the human world through sacrifices, whose strength will not drop significantly, there are almost no exceptions."

Luo Yan spoke eloquently to the students below, and although the students only thought that Luo Yan was telling a story, they gradually became engrossed in listening.

Chapter 278 One Week

After giving the students a brief introduction to the Spirit World and the Demon World, Luo Yan began to explain the Mirror World and the Digital World.

The world in the mirror, also known as the world of reflections, is a projection of the human world.

Similar to the Mirror Dimension magic used by Doctor Strange in Marvel.

The Mirror World is a completely lifeless world. Except for those with specific talents, almost no one can enter the Mirror World. Therefore, Luo Yan did not provide a detailed explanation of this world.

After all, among the students present, apart from Jotaro Kujo who will encounter enemies who can enter the mirror world, the others will hardly encounter such enemies, so they don't need to know that much.

The digital world was also only briefly introduced by Luo Yan.

The digital world is a world of information, and also a special space attached to the human world.

That is, the world that appears in the anime "Digimon".

From the invention of computers in the 1940s to the creation of the Internet in the 1970s, the Internet developed extremely rapidly in this world that is mixed with countless films and animations. Soon, the information accumulated on the Internet began to merge with another dimension, and with the help of the energy of the other dimension, all kinds of information life forms were born.

Digital life forms are not entirely composed of information; they are alien life forms composed of information and energy. Therefore, digital life forms can also exist in the human world in the form of energy bodies, interfering with the matter in the human world.

The digital world is still in its infancy and is currently a chaotic ocean of data.

However, one minute in the human world is equivalent to one year in the digital world. Before long, countless data life forms will be born in the digital world, and that's when the digital world will become truly exciting.

Luo Yan had already sensed the existence of the Digital World from its very inception. He had prepared a backup plan for this world, intending to control its evolution and create a unique Digital World.

Luo Yan only gave a brief introduction to the Digital World; in the evening elective class, he mainly talked about the structure of the Spirit World and the Demon World.

In one lesson, Luo Yan imparted a great deal of knowledge about the other world.

Those who treat Luo Yan's lectures merely as stories will naturally gain nothing and feel nothing after listening to them.

People like Yusuke found the lecture very helpful and gained a deeper understanding of their role as a spirit detective.

Why does the spirit world need humans as detectives? Because the spatial barrier between the spirit world and the human world is weak, and spirit beings often sneak into the human world.

When beings from the spirit world enter the human world, their strength is also limited. That's why the spirit world needs to cooperate with humans to help deal with these beings that illegally infiltrate the human world.

The Spirit Detective is nominally subordinate to the Spirit World, but in reality, their relationship is more like that of collaborators. Yusuke is not obligated to obey the Spirit World's orders 100%.

After listening to Luo Yan's lesson, Tatsumi Oga also gained a lot, learning about Little Beel's background and understanding the Demon King's strength and power.

They also began to speculate about the strength and purpose of Hilde and Alandron (the demon whose body split open to transport Little Beel).

For some students who yearn for great power, Luo Yan's talk about the demon realm and demons today also provided them with an idea—if they cannot catch up with others through their own talents, they might as well make a contract with a demon and extract the demon's power for their own use.

It's hard to say how many students in Gotham's class share this idea.

Luo Yan's elective class lasted an hour, and by the time the class ended and school was over, it was already 8 p.m.

In Japan, many families have curfews. After school, day students cannot wander around outside and go straight home.

Oga lay in bed, recalling the events of the day, feeling utterly exhausted.

Today, he was branded with the mark of the Demon King, incurred the enmity of the school's girls in alliance with [Lie Nu Luo], was severely injured by Luo Yan in combat class, was completely defeated by Bang Zhi Kui in weapons class, and learned about the Demon Realm from elective class in the evening.

The day was so full of excitement that he didn't even have a moment to relax.

Oga handed Baby Beel over to Hilde to take care of (Hilde stayed at Oga's house after being released by Luo Yan) and then lay down on the bed, soon snoring loudly.

The other students were in a similar situation. They had experienced too much and hadn't even sorted out their thoughts yet. They were exhausted both physically and mentally, and they all fell asleep as soon as they hit the bed.

The following day, Oga and Furuichi went to school together again, and then repeated the lessons from the first day. Exhausted from the training, they returned home.

The course, which lasted for seven days, including the third and fourth days, significantly improved everyone's skills.

Under the triple enhancement of excessive training, the effects of the Rejuvenating Water, and the delicacies from the world of Gourmet Devil, even the weakest Mitsuhashi developed a muscular physique and mastered many fighting techniques and firearms skills.

Even now, Sanqiao has a certain probability of defeating a fully armed special forces soldier.

You have to understand, he's the man who passed the test of Teacher Jigsaw.

During evening self-study on the second day, Sanqiao was informed by Teacher Jigsaw that the examination room was set up and the test could begin.

Then Mitsuhashi entered the examination room, and after regaining consciousness, he found himself and Shinji Ito handcuffed to a section of water pipe...

The events he and Shinji Ito experienced need not be detailed, but since that night, Mitsuhashi has completely changed. He is no longer carefree or frivolous; he has become much more mature.

Luo Yan also kept his promise to Sanqiao, helping him to undergo a complete transformation, making his physical qualities comparable to Lin Tianhui. This is why Sanqiao was able to defeat the special forces after only seven days of training.

Mitsuhashi's progress was not the greatest among the other students.

Yusuke, Oga, Hidetora Tojo, Baki, Ohma, and others have all made much more progress than Mitsuhashi.

Because on the third day of class, Luo Yan taught everyone how to use chakra.

Those among them with exceptional talent refined chakra in less than an hour with just a little practice.

Over the remaining four days, some people trained in the Hyperbolic Time Chamber and reached the level of Genin, making rapid progress.

Luo Yan taught these students chakra and ninjutsu primarily to motivate them to earn points.

Before learning chakra ninjutsu, Baki, Ohma, and the others didn't care about points at all. They just did free training in the Dire Classroom every day, fighting against the magnetohydrodynamic robots, and rarely went to the Hyperbolic Time Chamber.

For them, points were simply a form of currency used to buy food, and thus became dispensable.

However, after Luo Yan taught them chakra ninjutsu, their daily combat training and weapon training significantly reduced the time they had to spend practicing chakra ninjutsu. At this point, they had to spend points to train in the Mental Time Chamber.

Then their demand for points increased significantly, making the competition for points more intense.

Luo Yan had another secondary purpose in teaching these students chakra and ninjutsu.

That is, he plans to have his students conduct practical tests, participating in the alien hunting storyline of "Gantz: O".

These students must be quite bored from always attending classes at school. Just then, the Gantz storyline reached the Osaka arc, which was the most exciting battle between the Men in Black and the Night Parade of One Hundred Demons.

Participating in such activities and letting students understand the principle that 'hesitation leads to defeat' through practical experience is very beneficial for them.

Chapter 279 Gantz

Gantz is a manga series that began serialization in 2000.

The story revolves around Kei Kurono, a high school student who dies unexpectedly and is transported to a mysterious room. There, a black sphere orchestrates a battle against aliens...

Overall, it's similar to the story mode of the main god space.

The Black Sphere Room uses a team-based system to resurrect those who die unexpectedly, turning them into warriors and providing them with weapons to fight against aliens hiding in human society.

Of course, unlike the lofty and sophisticated God Space, this black sphere space was merely a gambling and entertainment device created by Earth's wealthy.

As for why Earth's wealthy have such advanced scientific technology to create black spheres, it's naturally because of even more powerful aliens.

……

One day, a galaxy in the universe is about to be destroyed, and the aliens living in that galaxy begin to migrate to Earth in small groups.

The immigration process began at an unknown time and lasted for an unknown period of time.

Most aliens who migrated to Earth died en route; only a small number successfully reached Earth.

Moreover, aliens had already arrived on Earth around the time of Japan's Warring States period.

Because these cosmic refugees are all very small in scale, they are simply not enough to destroy human civilization or take over the Earth.

So they obediently hid themselves and generally maintained a peaceful coexistence with humans.

However, in that galaxy on the verge of destruction, there was also a massive exiled civilization.

They have millions of people, warships that blot out the sky, and space cities; once they arrive on Earth, it will be the end of the world.

Initially, this exiled civilization did not set its sights on Earth; instead, they set their sights on a planet inhabited by multifaceted aliens.

However, the multifaceted aliens are not weak. They possess powerful science and technology, capable of creating various substances and organisms out of thin air, and preserving and replicating the consciousness (soul) of living beings.

The multifaceted aliens easily repelled the exiled civilization, but after discovering that their defeated enemy had set its sights on Earth, for reasons unknown, they imparted to humanity the bare minimum of technology needed to withstand the exiled civilization's invasion.

These technologies fell into the hands of Hanscat's wealthy patrons, who used them to create a bunch of black spheres and distribute them around the world to select warriors, both for the patrons' entertainment and to prepare for the arrival of the exiled civilization.

The various aliens that appeared in the original comic were not worth fearing. Even the exiled civilization that descended during the apocalypse—the four-eyed giants—was trash in Luo Yan's eyes.

Most of these civilizations are still in the atomic age and do not possess the weapons to destroy planets.

In other words, the multifaceted aliens who provided technology to humanity were at the peak of the neutrino era, and were considered giants among ants.

In the past, Luo Yan would have been wary of Wei Zi's peak technology.

However, with the help of the black technology system and other Luo Yan, Devouring Luo Yan has now mastered the technology to the entry level of Unifying Force.

Their technology is only one stage ahead of the multifaceted aliens, yet it's already incredibly advanced.

There are countless civilizations in the universe, many of which can reach the level of a neutrino civilization, but very few can reach the level of a unified force.

The power of unification is a hurdle; only by mastering the power of unification can one be considered a god-like civilization in the universe.

The multifaceted alien civilization, at its peak, can only play tricks on lower-level civilizations like Earth.

By mastering the Unified Force, one can grasp the four fundamental forces, freely converting matter and energy to refine enormous amounts of energy.

It can also freely produce antimatter, create condensed matter, create black holes, and create matter of unified force.

It is even possible to create quantum bodies and achieve perfect immortality.

Such a god-like civilization could destroy an entire galaxy with the flick of its wrist, and would easily crush the multifaceted aliens.

Of course, the above are all levels that can be reached by devouring Luo Yan.

Luo Yan from the Monster World, although he has the relevant knowledge, lacks a machine of the Unified Force level and cannot unleash such great power. He relies entirely on making machines by hand, and at most he can only unleash the technological productivity of the microparticle level.

Science is not about cultivating immortality; great power originates from within itself.

No matter how powerful a scientist is, without machines to utilize their wisdom, they can do nothing.

If you want to build a nuclear weapon, you should at least have an isotope factory first!

The multifaceted aliens are very powerful in the manga, described as godlike, but humanity's enemy is not the multifaceted aliens. The main enemy they are going to Osaka is the Hyakki aliens disguised as monsters.

……

On Monday, after a two-day break, Luo Yan announced in his combat class: "Tonight, I've decided to cancel the elective course and replace it with extracurricular practice."