I'm just an internet cafe owner

Putting everything else aside, tactical nuclear weapons and lightning storms alone are enough to deal with 99.9% of the world's enemies.

If the remaining demon king cannot be destroyed by explosion, it can be transported to the vicinity of the sun's orbit via hyperspace teleportation, allowing the sun to capture its body.

If that still doesn't work, then you can consider using the cactus from Minecraft.

Listening to the introduction of the machine-type creature, Ryuguuin Seiya said with satisfaction, "Very good! Is the usage the same as in the game?"

Ji Kai smiled and said, "Completely identical. You can try it now."

Ryuguuin Seiya: "There's no rush. The Demon King's forces haven't been fully mobilized yet. It's best to make a move when he's mobilized them all."

The Hyperion has a weakness: it's difficult to detect enemies hiding underground, making attacks slightly more troublesome. If the Demon Lords escape while he's preparing to launch an underground attack, it would be like releasing a tiger back into the mountains. To be on the safe side, he decided to wait.

The Demon King's army now believes that the monkey is the enemy, not him. Therefore, he openly appears on the plains, patrolling the hidden demons around him.

When these demons saw Ryuguin Seiya, they noticed his special status and checked his level.

"Hey, you little piece of trash."

"What if it's a hero in disguise?"

"The hero can't defeat a slime?"

In front of these scouts, Ryuguuin Seiya pretended to fight the slimes, only managing to kill one after three minutes. Even after killing a slime, his level bar didn't change, causing the demon scouts to completely give up on scouting him. After all, these demon scouts were generally high-level, and naturally had no fear of a level one newbie.

As Ryuguuin Seiya approached while fighting the slime, the scouts searching for the monkey ordered, "Don't make a move until the hero discovers us. It'll be troublesome if we do."

The demon scout was still searching for the monkey. Following the demon king's orders, it had searched for quite some time, but found nothing but an ordinary human, which made it very unhappy. Just then, however, the sounds of fighting came from all around.

"I already said! Avoid fighting if you can avoid it, don't let them..."

Before it could finish speaking, Ryuguuin Seiya appeared in front of it and grabbed its head.

"As expected... you have related memories in your mind, that makes things easier."

Currently, Ryuguuin Seiya has captured a demon scout leader, who possesses a certain operational plan for the Demon King's army, as well as the locations and contact information of various leaders.

The method of acquiring memories is quite simple; for beings with brains, Yuri's mind control is extremely effective. However, under normal circumstances, people disdain using this method.

However, Ryuguuin Seiya used it without any burden, because the enemies were not human at all, and there was no need to hold back any means when dealing with them.

Yes, he is seeking revenge, and in doing so, he is using new methods he has acquired to save the world.

"Now that we have accurate intelligence, it's time to take action."

From the construction of the warships to the commencement of operations, Ryuguuin Seiya spent a day preparing. Meanwhile, ground surveillance confirmed that the Demon King's forces were not moving quickly, and it was estimated that they would take two days to assemble their troops to attack human cities.

As for the elite members? They are completely hidden within the army. The purpose of doing so is very simple: to confuse the heroes, making them unsure of the key points, and even to mislead the human defenses, thereby enabling an effective attack.

At this moment, Lysita was completely dumbfounded: "It's over! The first world is going to fail, it's all over."

At this moment, she was still on the wooden boat. Due to the limitations of the wooden boat, she could not use any of her abilities and could only watch as Ryuguin Seiya acted for so long but his level was still only one.

Upon hearing Ristarte's words, Ryuguuin Seiya stood before her: "Trust me, we will win. This time, I will not fail."

The calm voice and unwavering determination put Ristarte at ease.

“Holy indeed…”

She seemed to see some images in the darkness, but these images vanished in an instant.

Meanwhile, Ryuguuin Seiya was not idle either. After confirming the specific intelligence and the satellite system in the sky had successfully detected the enemy, he began to take action.

"Engineering Corps, build one hundred nuclear bombs and ten weather control instruments."

"Time-space self-destruct truck, prepare, countdown 60 seconds."

"The Hyperion has been mobilized to wipe out all the surrounding demons, providing a suitable site for construction."

"Build a satellite launcher!"

Meanwhile, the Demon King was still lying low. Although he had sent out all his subordinates, he himself did not go with them. Instead, he disguised himself as a human to see if he could set up an ambush. However, just as he was preparing, the weather changed.

"This isn't a natural thunderstorm, it's magic? No! I don't sense any magical fluctuations, so what is this?"

As it pondered this, dark clouds appeared over large areas of the continent, above the heads of demons. But for the demons, the stormy weather was actually quite comfortable; beneath the dark clouds, they felt a surge of power.

"This is the power of the Demon King!"

"Long live the Demon King!"

"Destroy the hero! The world belongs to the Demon King!"

The demons in various regions were cheering, but some of the leaders sensed something was wrong. However, by the time they were about to give the order to retreat, disaster had already struck.

Lightning struck from the sky, instantly turning the demons into charred remains. The demon king's officers tried to defend themselves, but faced with the power of the lightning, all they could do was protect themselves.

Magic shield? Can you withstand one hit, two hits, or anything else?

Ten times? One hundred times?

Those who can withstand that many blows have all become immortal cultivators; who would want to be a demon king's subordinate?

Moreover, the extreme natural disasters are accompanied by nuclear strikes.

These demon forces had no alarms, and the dark clouds and lightning in the sky completely masked the sound of the nuclear bombs flying by.

"Wait? What's that?"

Although the sound was muffled, the demons with sharp eyes still spotted the nuclear missiles flying from the sky. They flew in from all directions at different times, and landed at their designated locations under the cover of thunder and rain.

Inside the Hyperion, Ryuguuin Seiya looked at the data on the screen, his expression somewhat somber.

"Oh no, there's a 10-meter error here. We need to add some loose coal and nuclear bombs here."

"This place is surrounded by nuclear bombs, and lightning storms bloom in the middle."

"High-energy reaction? Seal off space, unleash nuclear weapons!"

For Ryuguuin Seiya, nuclear weapons are a very cheap form of firepower. His only regret is that the nuclear weapons in Red Alert are tactical nuclear weapons, which are not very powerful overall and are only intended to strike troops.

While warheads like Mental Omega exist that can directly obliterate cities, they are too expensive. It would be better to build more nuclear bombs like these. Besides, nuclear bombs and superweapons are only used to reduce the number of ordinary units; the real attack is still in preparation.

"Satellite Ray! Activate!"

This awakening skill comes from the male Gunner in DNF (Dungeon Fighter Online). It utilizes cutting-edge technology from the Celestial Realm and allows for laser attacks on ground units from beyond visual range.

However, this was just an appetizer. Against a large-scale army, such an attack would still leave survivors. What if someone reacted quickly and burrowed underground? The Hyperion's main guns were constantly charging.

"Main gun! Fire!"

Charging takes a long time, but this Hyperion machine was built using redstone devices from the Minecraft world. The special redstone array and powerful cooling system allow the main cannon to charge quickly, enabling continuous fire.

At this moment, the Demon King's army was stunned. The light descending from the sky, like a divine judgment, rendered the demons incapable of action. The continuously appearing mushroom clouds further demonstrated the power of nuclear weapons.

Even the four great demon kings dared not confront the nuclear bomb head-on, but Ryuguuin Seiya scattered it out like candy.

What? There are still survivors? Under the attack of the Yamato cannon, which is powerful enough to shatter mountains, you'd die no matter where you hide.

Teleportation? It directly seals off the surrounding space through a time-space barrier, rendering all teleportation magic ineffective.

Lysita was stunned by what she saw.

"What are these? Why didn't the gods stop you?"

Ryuguuin Seiya calmly replied, "Because I used human power. Your rules only prohibit the use of divine power, but I didn't use it. These are things that humans have developed through wisdom, so they are not against the rules."

"How is this possible? I have never seen humans possess such terrifying weapons."

Ryuguuin Seiya calmly replied, "Because these powers are not the power of humans in this world, but rather come from the wisdom of humans in other worlds. Just watch, I will carefully kill all of these demons."

Ryuguuin Seiya has already begun his glass-burning mode, using nuclear bombs and lightning storms as if they were free, even without detecting any life signs.

Upon detecting enemy units, a Yamato cannon shot was fired immediately.

The Yamato guns' attacks, beyond visual range, were impossible to evade. From the start of the battle, the saturation bombardment lasted for a full twelve hours. For those twelve hours, the entire world trembled.

Even the realm of gods was shaken and affected by this world, but looking at the enormous warships in the sky, all the gods in the realm of gods fell silent. They couldn't win, they simply couldn't win.

Gods do possess various wondrous powers, but these spells and powers are utterly inadequate against such overwhelming firepower. Moreover, the true rulers here know who created this world-destroying force.

Ryuguuin Seiya? He's just the user; the ones who actually created this are people they can't afford to offend. But at the same time, the gods who know the truth are also very happy, after all, what Ryuguuin Seiya did was to eliminate the demon race and save humanity. And he didn't break any rules, right? Machine Race members aren't gods; the power they use is the power of technology. These technological powers were all invented by humans, so rounding up, isn't it basically the same as Ryuguuin Seiya using human power to fight?

At this moment, the Demon King's face was ashen. He was very glad that he had been careful enough to disguise himself as a human instead of joining the army to fight. Otherwise, he might have died in battle before finding the monkey warrior.

"Damn it! What kind of power is this? Could it be an SSS-class hero? Impossible! Absolutely impossible, they couldn't possibly be here."

As he pondered, he felt as if someone was watching him. He glanced over instinctively and found it was just an ordinary level one. Sensing that Ryuguin Seiya behind him was just an ordinary person, he paid no further attention and simply pretended to be an old man with a kind smile.

Meanwhile, Ryuguuin Seiya stared at the Demon King, lost in thought. Using the internet cafe's special system, he instantly recognized him as the Demon King. With that crimson health bar, who else could it be but the Demon King?

However, he did not act rashly, because he knew that in the eyes of the Demon King, he was just an ordinary person with a weapon.

He calmly walked to the Demon King's side, without attacking or showing any killing intent.

"Hello, sir."

"Young man, is there anything I can help you with?"

Demon King in Disguise

It's excellent; no one, not even an experienced hero, would necessarily mistake him for a demon king. Ryuguuin Seiya confirmed his identity through this health bar, and now that his identity was confirmed, things became much easier.

"Old man, I have a question for you."

The Demon King had no suspicions because the opponent's level was very low. Besides, even if it were at the maximum level, he wouldn't be afraid. Its strength was so great that without the Holy Sword sealing a certain portion of its power, it would be impossible for a hero to defeat it.

Unfortunately, Ryuguin Seiya was no ordinary ninja. At that moment, Ryuguin Seiya suddenly transformed into a jelly bean and hugged the Demon King tightly.

"Young man, what are you doing?"

"I'm sorry, Demon King, I am the Hero."

As Ryuguuin Seiya embraced the Demon King, he ordered the Hyperion to activate the hyperspace teleportation.

At this moment, the Demon King was shocked: "How is this possible? The information is false? The hero isn't a monkey?"

Ryuguuin Seiya said calmly, "Of course not. The one who killed your subordinate was just a passing Great Sage Equal to Heaven. Demon King, prepare to die!"

At that very moment, both Ryuguin Seiya and the Demon King were teleported to an open space.

"Yamato gun! Fire!"

Fall Guys, or rather, Species, are one of the few truly immortal transformation forms found in internet cafes. The Demon King trying to break free from the Fall Guys? That's wishful thinking. The Fall Guys' henchmen are firmly attached to the Demon King; even if it transforms back into the Demon King, it can't change its body shape.

"Damn it! Damn it!!"

The Demon King struggled, unleashing all its power in that instant. However, it found itself still unable to move, and could only watch helplessly as powerful artillery fire rained down upon it.