The beginning - 1st chapter

Hello!!

My not real name is Yung_reader!

That's my first(or second) work, and I am not confident it came out great.

English is not my first language, so some sentences might be strange to read or understand. In that case, you can freely comment about it and complain. I am more happy to correct the mistakes that you find there, but if you also think that the story's characters act out of the way they should have. You may comment about it. I might or not change depending on the situation because the story starts pre-canon time, and I may change their original attitude.

As you may guess, this world is Crossover between Danmachi and DemonSlayer. However, it is not simply putting one character from one world to another. It is more complicated, with changes in the past and creating an original background.

My version of Danmachi might seem different from the original one, but you need to consider that I am writing this after watching the anime version and reading the manga one—That's why the story might be completely different from both manga and anime ones.

About relationship. I am not a harem kind of person, so there won't be a harem here.

Muichiro, in this story, has the character of his brother, Yuichiro, and Yuichiro has the character of Muichiro.

My writing style. Well, it is strange, doesn't it? So you need to tolerate it if you keep reading it. Or do you nay suggest somehow customizing it? I know that reading my story might be inconvenient for you guys, but this way, I wanted to add some feelings and make the story more lifelike.

Also, World of Demon Slayer and Danmachi is not mine. They belong to respective writers. The main image is also not mine, and if the author doesn't want to see it here, they can ask me to take it down.

That seems all I wanted to say, so goodbye!

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The beginning - 1st chapter

In ancient times, monsters lurked in every corner of the mortal world, threatening to exist of mortals. Monsters from fairy tail with the power which could be compared to gods were threatening all the mortal world. Only with the combined forces of humans and other races and with the blessing of spirits have they prevented the complete destruction of their world.

However, the balance of power changed around a thousand years ago when deities called gods descended from the realm of divinity.

The first god that has ever come to the mortal world was Ouranos and the first one that gave his blessing to mortals, the Falna, a power that helps mortals to achieve previously unimaginable powers to fight back monsters. However, gods are forbidden to use their powers, known as Arcanum, and have the same physical abilities as normal people.

After they descended, most monsters on the earth were forced to a single place in the center of the world, inside a dungeon. Upon which gods built the Tower of Babel or Babel, whose purpose was to prevent the monster from spreading to every corner of the continent. The surrounding area of the tower becomes the most known city in the world, Orario, the center of the world or place with the most numbers of gods.

Humans and other races from every corner of the world come to Orario to get the blessing from gods to dive into the dungeon to uncover its secrets and find a treasure that it contains.

They have been called Adventures.

However, not all gods come to the lower world with a sincere desire to help mortals. They seek entertainment from the mortal world, and the entertainment that they want sometimes may cause disasters in the lower realm.

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Ironcoast city, the northeast to Orario.

Ironcoast city is founded near Alv Mountains and the river which flows deep into the continent. It is famous for its high-quality ores mined from Alv mountain and sold through trade ports to other countries throughout the sea. This city is filled with activity. From sunrise to sunset, city streets are filled with different people, from Amazoness with their natural beauty and toned skin to dwarfs that come after daily work from nearby mines.

Tavern near the northern gate of the city.

Razem Zimmad's pov

"For forty years that I have lived in this world, I thought that I had seen everything, from the monster that lurks near our city to adventures that can destroy houses with their bare hand but never did I, do you hear me? NEVER DID I MEET A PERSON SO CARELESS AND AIRHEADED AS YOU, DO YOU UNDERSTAND MEE?"

The person that screamed was no other than the owner of the tavern-aged man with brown hair and eyes. His target of anger was the child with long straight hair of a black color that fades to mint green as it approaches his waist. Even though he was lectured, his childish young face with blueish marks has not shown any concerns about the reasons for the owner's anger being spilled out or why he was lectured. It was more likely that he was lost in his own thoughts or not even interested in conversations from the beginning. He does not even look into the owner's eyes. Instead, he is looking into a nearby window where the sun starts setting.

"MUICHIROO!! You damn bastard, are you again ignoring me !!!!" - I yelled again to this little boy.

Despite my struggle to catch the boy's attention, he is still looking out the damn window. He is like the god of laziness or airheadedness, but he is even worse than them. They at least responded when someone started a conversation with them, but this girlish brat did not even listen when I tried to talk to him.

*SIGH*

" Kami-sama. what should I do with you." tiredly and helplessly, I said.

"hahahahaha"

The laughter came from the nearest table to the counter, where a group of people in armor sat while eating and drinking alcohol and wine.

"Have you seen it, captain? He is again getting on the nerves of Razem! Hahaha,"- one of the human guests said

"Hahahaha, I know that Razem becomes soft, but how can he let some brat from another city live here freely in his tavern for the past three days, even when, on the second day, he answered to his kindness by scaring away other customers."- the leader of the group of people ended his speech with another loud laugh and continued drinking his alcohol.

" I never knew that Zimmad was a chicken, hahaha,"- the third one added why laughing.

"YOU STUPID BASTARDS, LIKE YOU, ARE DIFFERENT FROM HIM" - I screamed to these bastards with all strength of my lungs." EVERY DAMN DAY YOUR TRIO COMES HERE TO DRINK EVEN THOUGH YOU SHOULD HAVE BEEN ON GUARD ON THE NORTH GATE, YOU DAMBASS LEAVE YOUR POST TO DRINK WHILE NEWBIE WORKS FOR YOU THERE!!!" - after splitting my anger, I again sigh from exoughtion. 'These bastards never change, lazying around whenever the chance comes. When I again looked up, I saw that all of them had lost their big smiles and quietly started to eat their dishes.

' Well, one problem solved'- after I thought that, I looked to my right where I saw a little child no older than eight years old, with a height of around 4.7.

'*sigh*'

'I first met him in the middle of the city where he was looking at a very passing person, he looked like a lost child who couldn't find his mother, but when I tried to ask him about it, the response was that he came here alone and wants to be an adventure in Orario. He doesn't reveal his origin or why such a child as his want to be an adventurer, and what with that tattoo on his face .'- I sigh again-'Why did I even help him by providing him with a roof over him when it was clear that he would cause trouble to my tavern. I should have avoided him.'- I stopped my train of thought and looked at the bra... Muichiro again.

Said Muichiro is sitting on the bar's counter with his kimono-like clothes that extended on his sleeves and calves, with a white belt and Katana on his belt with strangely decorated tsuba(hand guard).

' Based on his clothes only, I guessed he may be from the Far East, but having Katana with him further proves my guess. Still, how can a child come here alone from such a great distance.'

"Muichiro," I said again. This time he looked up at me, tearing his gaze from the window.

'Thanks, the goddess.'

"Muichiro, this is your third try to get with a caravan that goes to Orario, the third time! How can you, three times in a row, be late on caravan when you have left tavern every time, hours before the caravans exit the city? The place you should have gone to is near 20 minutes the walk! How can this even be possible, for goddess' sake!"- This was the third time when I said it to him, but it was like my words passed through one of his ears and exited from the other. 'In this temp, I will need to carry him to caravan myself so that he will be in time to the Karavan.' - 'This was the only way to shorten the burned he had brought to my tavern, the dishes he ordered, and his room. Moreover, his training, which looked more like torture, where trained his body until it he started to puke blood from his mouth, but I could have somehow tolerated it if he trained in his room, but no, he should have trained outside a nearby alley which causes my precious pub to gain a bad reputation among travelers and citizens.'- I thought by wiping out imaginary tears from my face.

"Something caught my attention, and I was lost in time," he said with his monotonous childish voice while keeping his poker face.

My face became hotter, and I could feel that marks appeared on my face.

'Ofuuu, breath, offuuu, just ignore him, ofuuu, he will be gone soon,ofuuuu' - slightly hitting my face with both hands to regain my temper.

"Muichiro, you need to understand, yesterday I asked my friend to wait for you and you know what? He waited for you one hour more than he should have been in this city, and because of that got scolded by the company boss he works for. Do you understand in what situation you put us?!"- I really tried not to hit him on the head with my hand because I am not the type of guy to assault children, and my mother definitely would not let the slide pass if she ever heard about it.

He looked into my eyes without blinking or answering what I waited for.

"*sigh* Okay, let's move from the part to the present. Right now, if you still want to become an adventure in Orario and haven't lost your spirit." when I said it, his interest in conversation grew instantly." You need to go to the same place that I repeatedly told you about, and there you can find a group of horses with carriages. There you will ask whether there are heading to Orario" - I took out a bag of valis from the counter" Then if they say yes, pay them with this."- I pointed at the bag with my finger.

For a few moments, he looked at me and the bag on the counter and then said something that surprised me.

"Thanks"- even though we were in the pub where a number of people were drinking and talking, I still could hear his gratitude.

But before I could say something, he jumped from his chair and picked up his black bag from the ground. He ran towards the door but accidentally bumped into a man who tried to run into the tavern, but to everyone's surprise, the one who fell was the grown man, around 70 kilograms of mass instead of the child.

Everyone in the tavern started to laugh at the poor man that had fallen off.

When I had already recovered from my stunned state, the fallen man recovered and hurriedly, while being embarrassed, came to three guards who were near the counter.

Again looking to the closed door of the tavern and remembering two scenes that uphold here, only one thought comes to my mind 'Good luck to you'- and that is the only thing that I now can do for you.

"Boss" -a feminine voice interrupted me. Looking to the left, I saw a young girl at the age of 20 who had been working for me.

"Yeah, Anna? What happened?"

"Boss, you have always criticized me for my laziness during work time, but for the past three days, there were times when you completely abandoned your duty, and because of that, I have been forced to work extra !! Did you know that overworking is not healthy for young beauty like me, do you !!" - How can this worker of mine say those words with that much threatening while keeping that sweet smile?

"Okay, I get it, I get it!" I said, holding my hands in defense and having an embarrassed smile. While still thinking about that boy. I then return to work at the bar.

'He will get in Orario in two or one day, and monster in that region is not frequent. He should be safe until he arrives in Orario.'