Danmachi X Magi Crossover

Is it Wrong to Bring a Djinn in the Dungeon?

Summary: Bell Cranel's "Grandfather" did a good job in convincing his impressionable "grandson" to become an Adventurer, one might say he did too good of a job preparing the youth. When a random Stray Dungeon rises into existence just a few leagues away from the whitehaired child's home the day after his "Grandfather" passes from the world, Bell sees no better way to honor the man's legacy than to enter the Dungeon and reach its end.

Bell had no idea conquering a Dungeon would be so difficult! It took every bit of the training his grandfather had ingrained in him just to survive at first, but after what felt like days the boy learned how to adapt his training to advance through the Dungeon.

With his grandfather's preternaturally sharp and durable sword, Bell gained proficiency in slaughtering dragonlings, became skilled in removing the heads of wyverns, and, eventually, was able to slay a fully grown Dragon, even if the deed was only done by forcing the beast's powerful breath attack to backfire on its self. After what felt like an eternity Bell reached what could only be the Dungeon's end.

A countless number of coins, both gold and silver, laid scattered around the floor's edges in piles and strewn with the piles randomly were other expensive looking treasures. Swords, knives, polearms, and other weapons adorned with gold, silver, and countless jewels. Adorning the walls were tapestries of silk while in the wall enclave tablewares made out of precious metals sat proudly around centerpiece gems of incredible size. And seated boldly in the middle of the room on a stone pedestal was a lamp made out of dull gold with the design of an eight-pointed star enclosed in a circle carved perfectly on its side.

In a way Bell couldn't understand he was drawn to that lamp. Despite being the least expensive looking item in the room, it was the object that Bell felt compelled to approach first, and once he did the world around him disappeared in a flash of light.

"Agghhaa!" The brightness of the flash burnt the boy's eyes even through his closed eyelids, forcing him to turn away from the source of the light while covering his eyes with his arm.

"Welcome young man," A deep overwhelming voice echoed through the treasure room. "To my Dungeon."

Opening his eyes and looking towards the source of the voice, Bell beheld a sight unlike any he had ever seen before. A giant being, completely blue in coloration, that was somehow a fusion between man and dragon floated with his legs crossed above the lamp Bell had just been examining. The man-dragon was lightly dressed, wearing only a white skirt secured by a red belt and a gold amulet upon his chest that was the twin to his belt's buckle. The being's great arms were covered in glossy blue scales and dangerous looking spikes protruded from his forearms while from its fingers great, wickedly sharp claws gleamed dangerously. Atop the blue man-dragon's head, two curved horns that turned inward at their tips surrounded a red glowing third eye and a long, wild, main of blue-black hair extended down the being's back and around his neck. Finally, upon the man-dragon's back stretched two slowly flapping bat-like wings, each of the wing's corners tipped by curved claws.

"I am the Djinn who rules this Dungeon; Baal, the Djinn of Wrath and Heroes." The blue man-dragon addressed the awestruck boy, somehow without even moving his mouth to speak, even as Bell continued to gawk at what he was seeing. "I am very impressed by your resolve young man. You possess not the extreme talent nor the superior existence that the last man that conquered my Dungeon possessed, but through sheer determination, grit, and extreme growth you have done what should be impossible to one such as yourself. As such I shall accept you as my master."

"Um… thank you?" Bell scratched the back of his head in confusion. "But what exactly is a Djinn? Are you like the deus that Grandpa told me about? Can you help me become an Adventurer? A Hero?"

"Has it truly been so long that this world has forgotten our existence?" Ball mused absently before turning his attention back to Bell. "To answer your questions young man; I am not a got for I am a being of power whose existence is tied to this world unlike those who have come from the Upper Realms. As a Djinn, I am a spirit of immense power whose purpose is to grant prodigious power to those capable of being great kings. So, while I cannot grant you the grace of a god's Falna if you learn how to wield my magic well, I have no doubt you will become a Hero like few before you. Tell me, young man, what is your name? Do you seek to become a Hero with all your soul?"

"Yes!" Bell's answer came without hesitation. "My name is Bell Cranel and I dream of being a Hero that can reach the end of the Great Dungeon!"

"Very well Bell Cranel!" Baal surrounded both sides of Bell with his clawed hands. His fingers curving as if he was delicately holding a glass orb that contained the boy in the center. "You shall be my newest Metal Vessel wielder, draw your sword!"

As the spirit commanded Bell smoothly drew the sword his grandfather had left him. Then, in another blinding flash of light, the encircled eight-pointed star sigil that had adorned the dull gold lamp now resided upon the sword's blade, just above where the hilt met the blade itself.

"Go forth young Bell, my new master." Looking up from his sword, Bell's eyes widened when he realized that he was no longer in the Dungeon's treasure room and that Baal's giant form had disappeared. Instead, it looked like he was flying through a great void on a light blue platform of light towards a ball of blue and green, and sitting next to him on the light platform were half a dozen giant burlap sacks filled with what looked to be the treasures from the last room of the Dungeon. "I eagerly look forward to seeing your journey to becoming a Hero."

Then, after one final flash of light, Bell Cranel opened his eyes to find himself back at the area just outside Baal's Dungeon entrance, only the foreboding structure was completely gone! Scattered about the area were the giant sacks of treasure, while within Bell's head only one thought dominated his mind.

I can do it! I can be an Adventurer, a Hero! It is time Grandpa; I'm going to go to Orario! To the Great Dungeon City!

Though as Bell looked towards the slowly rising sun a stray thought slipped from his lips:

"Umm… What am I supposed to do with all this treasure though?"

In this world where gods have descended from the heavens to live amongst the mortal races, where magic is a common practice, and where many nations exist, one existence exists that draws the eyes of mortals and immortals alike; the Great Dungeon of Orario.

An enormous structure of unknown size, the Great Dungeon or Orario is both a place of death and a provider of prosperity. For only within the Great Dungeon are Magic Stones produced, wonderous objects that can be used in all manner of ways to make the lives of the city's denizens better. However, Magic Stones are only found within the denizens of the Great Dungeon; within monsters, and monsters of the Great Dungeon hate all the surface races. So, to collect the precious material, courageous men and women of the city take up the mantle of Adventurer and delve into the Great Dungeon's depths.

To assist these brave men and women of the mortal races, gods and goddesses who had descended from the heaves to the mortal plane graced Adventurers with their Falna, their Blessing, and claim them as their children, making those children a part of their Familia. Many Familias, each serving a specific deus exist, and almost all of them focus their efforts on exploring the Great Dungeon, for it is the greatest source of strength for those blessed by the Falna and best source of Magic Stones for the city above the Great Dungeon.

However, it is a well-known fact to the denizens of this world that the Great Dungeon is not the only Dungeon. Aberrant Dungeons, the term used to describe the structures that appear and disappear all around the globe, have been reported to exist since before the gods descended from the Upper Realms 1000 years ago. Unlike the Great Dungeon though, there has never been a record of one returning after entering an Aberrant Dungeon, and due to how quickly the structures relocate no Familia-aligned party of Adventurers has ever had the chance to challenge one. For surely a party of Adventurers graced with the Falna would be able to face an Aberrant's challenges… especially if they were Adventurers who had surpassed Level 1… right?

Never before has an Aberrant Dungeon been explored and the explorer seen alive again, at least not before the legendary Adventurer Bell Cranel; famed Dungeon Capturer, the Lightning Emperor, the Hero of Elements, the Lord Argonaut, the Rabbit King! He who conquered the first Aberrant Dungeon would go forth to change the World!