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Frank willed it, as he created a spell that Hades was most likely going to teach him slowly, Undead Combination. ​​

Alongside the spell he already knew the moment he got Death Magic, Undead Transformation, he acquired the ability to manipulate the dead spirits that were charmed by his Death Charm, and force them to possess either corpses or inanimate objects, becoming Undead-type monsters.

Afterward, the effect Undead Combination takes effect, combining the Dead Spirits and the corpses that would be used as their new bodies.

All of this happened in front of Frank's sight, as the Dead Spirits of the four beastmen that a few minutes ago hated him literally to death, now obeyed him happily, combining into a single ethereal mass and entering the four corpses simultaneously.

The four corpses began to glow as if they had taken life by themselves, beginning to meld together like a mass of rotten flesh, Frank kept infusing Mana as the four corpses merged completely, shaping itself into a single new humanoid body, seemingly of great physical strength and size.

Although its size itself did not make up for the four corpses, as some mass had seemingly disappeared, Frank thought that this might have been due to the increase in the quality of the body…

"Stupid brat, you're already so advanced and you just got my powers…" said Hades, he was a god but could not help but find himself in awe.

"Well this is only the beginner spells, maybe I will require your help later," said Frank, as the large Undead in front of him awakened.

An enormous man, being almost two meters in height.

His body was packed with hard muscles, and his arms and legs were as thick as logs.

It had a stoic face, covered in a skull-like mask, which seemed to have appeared there through its creation.

It had long black hair, and no beastmen features, despite four corpses of them having been used for its creation.

It moved towards Frank, kneeling, despite him being taller than the young man.

"Oh, King of Death, Progenitor of Death, I have come to serve you…" it said. Its soul and body were created by the combination of four different beastmen that belonged to the Thief guild, but now, he was the first-ever raised Undead of Frank…

"Impressive, your capabilities are higher than I expected, and you seem to possess a Rank like a monster? Hm… Do you recall the memories of your past lives?" asked Frank as he rubbed his chin.

"Yes… I do, but we are now one. We have become one to serve you within the shadows…" it said.

"Alright, alright, cut off the serious tone, talk to me more casually," said Frank, patting the Undead's nude shoulders.

"Hm? A-Ah, very well then, Master… I apologize if I sounded frightening… By the way, can I get some clothes?" asked the Undead.

"Hoh? This is quite the advanced Undead… Seeing it being raised pleases me! very well done, brat! However, remember to not overuse Undead Transformation or Undead Combination if you won't have space to store them whenever you go world-traveling…" said Hades.

"Hm, you're right…" said Frank, as he released threads from below his fingers and created a simple silky, white-colored t-shirt and shorts for his new Undead through his Sewing Skill. He could now make very basic clothes after having let his Clone practice with spider threads and Sewing.

"They fit perfectly, thanks, Master," said the Undead.

"Thought the whole deal with the equipment is a bit of a problem… Getting you a fitting armor might be a problem if it is too costly- Wait, we can just go grind money in the Dungeon now that no one is there…" said Frank.

"Eh? Already?" asked Hades.

"What? Did you want to say something else? I am very busy, I always have a lot of things to do…" asked Frank.

"First, I have to tell you more about Death and the Underworld and my world! And all about each spell and- Hey, don't ignore me!" roared Hades, as Frank walked through the forest with his Monster Pets and his new Undead.

"Come to think about it, what name should I give you…?" wondered Frank.

"Any name would be fitting, my lord," said the Undead.

"Name him after the God of Death, Thanatos!" said Hades.

"A suggestion from you? What makes you think I will take it? Let's call you Nezhit then, just to spite in this skull face. Which means Undead in Russian… Good enough," said Frank.

"You damn brat, Thanatos is way better!" roared Hades.

"Oh, the meaning of Undead in a language from my lord's world? I will gladly take it then!" said Nezhit, excited about his new name and being.

Ding!

[You have named your first raised Undead as [Nezhit]!]

"Thanatos might be a good name, but it already belongs to a God, and I don't want to one day met the God and tell him that I named someone after him, it would create a very awkward moment, to be honest," said Frank.

"That's… Not entirely untrue. Well, if you're going already to that dungeon, hear my story in the road, will you?" said Hades.

"Alright…" said Frank.

Ruby, Zhulong, Ginseng, and Nezhit seemed confused as Frank spoke alone, but none of them dared to point that out. Frank was the only one capable of seeing and hearing Hades, not even his pets nor his raised undead could see him.

As Hades talked about his world, Frank began to craft a new spell, thinking about the utility that it might bring.

"Now that my Dark Magic merged with other two magics, I can feel like I became capable of merging the principles behind the other two into it… and through Mana Control, it should be possible to create a new Spell… This one will be extremely useful, but its complexity becomes higher as its utility becomes broader, so for now, it should be better to add some big restrictions… And done, it is costly but particularly useful,"

Frank crafted a new spell in a few minutes, which he conjured immediately.

Flash!

His Aura of Death suddenly became darker, merging with his very shadow.

"Ah, it is easier to conjure at night…" said Frank.

"W-What is that?! A new spell? It has… Dark Magic into it? And it also is Death Magic!" said Hades.

"Indeed, I made it through combining the principles of the two, it was hard…" said Frank, despite having made it in a few minutes.

"My lord, what might this be?" asked Nezhit.

"It's named Shadow Storage. Although I have my own inventory, this one is to store living beings inside… or Undead like you. Though it has a limit of four before I cannot keep it up, hop in, everyone," said Frank, as he commanded all of his minions, who jumped directly into the void of the shadow, finding themselves floating in complete darkness, however, as they glance above, they could see Frank glaring at them, they were seeing him through his very shadow.

"Y-You damn brat! Did you just created a Dark Magic Spell that can store things?!" asked Hades.

"Yes, it is nothing special because it is filled with flaws, such as mana consumption, limit, and more… But it is useful as it is," said Frank.

"Of course it's useful, you brat! It's incredible! I… It even resembles the spell I once used to store the Underworld within my own soul! Perhaps you could develop it into something else entirely…" said Hades.

"Not for now, we are going to the dungeon," said Frank, using his newfound strength and speed, rushing towards the Dungeon at a high speed.

Flash!

By using his mask plus his Stealth-related Skills, Frank was able to completely mask his presence, reaching the Dungeon in no time and descending through its stairs, now without even leaving a thread trail as he had the Mapping Skill, letting him map his way inside.

As Frank made sure that no Adventurers were around (although none were at the entrance) he freed Nezhit, Ruby, and Zhulong, while leaving Ginseng inside of his hand through the power of Druid, as he considered it better for the little radish, who was not much into physical fighting yet.

"So this is a Dungeon of this world… Terra, was it? What's the history behind their origin?" asked Hades.

"From what I have heard, these dungeons were made by the Goddess of Chaos to both bring a challenge to the mortals and also nourishment and power… Complicated God stuff that often does not make sense at all. According to what I heard, mortals in this world were way too conceited, so the Gods decided to do this, approving of this Goddess' idea," said Frank.

"Well, that sounds like something that one of my siblings would do, to be honest…" said Hades.

"Oh, are all your sibling's Greek Gods?" asked Frank.

"Yes, we were created by the prayers of humanity in our world, and we had lived ever since our religion itself started… Although as the Greeks became Romans and then the Romans disappeared and more new civilizations appeared, we became weaker… Although some of us, like me, Zeus, Poseidon, and our father Chronos stayed strong, as we represented things that were always present in life, even after many generations, such as the Sky and day, Death, the Ocean, Time, and so on…" said Hades.

"What an interesting world… So that's a parallel Earth, huh? Well, in my world it is a bit similar, Gods are born from the beliefs and emotions of people, but I guess there should be some things we differ from each world," said Frank.

"Hm… It is quite interesting, this concept of worlds and parallel worlds… Well, that's how the cosmos is, I suppose…" said Hades while sighing, as Frank and his party of monster rushed through the dungeon corridors, defeating monsters, and collecting the corpses.

Frank neared the dungeon's depths, searching for the Boss Monster.

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