[Multiverse]Voyage Through The Worlds: Starting with Demon Slayer

Chapter 4: Demon Slayer



Hello everyone, before we start I would like to clarify this story will be posted on both Wattpad and Fanfiction

"Person speaking"

"Person thinking"

"Other Entity speech"

"Other Entity thoughts"

"Attacks"

If you read on sites without Bold, Italic, or Underline available

"Person/Entity speaking"

'Person/Entity thinking'

[{Chapter Start}]

Ichigo against Byakuya. Naruto fighting against Sasuke. Tanjiro gathering coal for his family. Asta training with boulders on his back, preparing for the Grimoire Ceremony. Luffy going off to Sabaody for the first time. Ken Takamaru getting his... never mind. Itadori fighting off against his first cursed spirit with Megumi. Eren watches his mother get eaten. Denji adopting Pochita.

And it wasn't just limited to manga.

Jinwoo getting ranked as an E-rank hunter. His son Suho rowing the boat made of elven wood, as the shadow dwarves fixed the sails. Lloyd Fonterra scamming the Dukes, thanks to Xavier ( or Javier, dunno how to say it) somehow convincing an angel to lie. Seojun Kim viewing the first-ever ad of the Transcendent Academy, but immediately declining upon seeing the cost, and getting in a life-threatening accident. Seongwu normally commuting to college as the apocalypse had not started yet, not becoming a necromancer as of yet.

The Gamer

The Top Dungeon Farmer

My S-class hunters

Mythic Item obtained

Nanomachine

The Lazy Lord masters the sword

Overgeared

Omniscient Reader's viewpoint

The Lone Necromancer

Solo Leveling Ragnarok (Sequel to SL, available on web novel, or just search up the manhwa)

Enrolling in the Transcendent Academy

SSS Estate Developer

Dragon Ball

Not even just manga or manhwa. But even Western media.

The Doctor undergoing his regeneration, Thor Odison preparing to pick up the hammer. The TVA pruning timelines. A peaceful Krypton before its destruction.

Hundreds of thousands of media consumed over my entire life, all swirling around me. And they were mine to visit.

I came.

I leaned back, taking in the fragments around me, each offering a world full of potential, yet fraught with danger. My mind was racing—there were so many places I could go, so many powers I could gain, but I couldn't just rush in blindly. After that close call with Reiatsu, I knew I had to be careful. The last thing I wanted was to dive into a world where I wouldn't survive the first few moments.

"Focus," I muttered, shaking my head. "Let's pick something that suits my needs for now."

Healing abilities were at the top of my list. I couldn't afford to be unprepared for another crisis like the USJ attack. Healing would be essential, not just for myself but for everyone around me. The thought of my classmates suffering because I couldn't help them... it gnawed at me.

'Solo Leveling?' I thought as I stared at the fragment, but then chucked it away 'Nah, the chances of me becoming a high ranked healer-or a high ranked hunter in general-are extremely slim'

I started to mentally sift through the possibilities. Marvel and DC were off the table—too chaotic, too many unpredictable factors. Even if I had powers, I'd be caught in a constant mess of heroes, villains, and cosmic threats. Omniscient Reader's Viewpoint? No way. With those Outer Gods lurking, I'd probably be squashed the second I set foot in that world. I wasn't ready to face entities of that scale. The Gamer seemed tempting, but with my luck, I'd be stuck without a system or, worse, hunted as an outsider.

"Ugh," I groaned, rubbing my temples. "Otherworler defenses are a pain. Let's remove all worlds with defenses for now"

I removed Overgeared from the list too—it was just a game. Plus, the chances of that game affecting reality were too slim for my liking. As for worlds focused on martial arts or cultivation? Forget it. I didn't need to spend years training to gain a powerful technique. Healing needed to be quick and effective.

Cultivation worlds were too dangerous for me right now. Besides, everything in those worlds depended on one's luck and connections, things I would not possess in a completely alien world.

'Jujutsu Kaisen...' I stared at the fragment for a while, before storing it. 'I'll take that if I don't find anything else'

Maybe I could go into the world of Bleach and kill myself? Could I learn Kaido from Soul Society then? No, that would take too much time.Besides, I have no idea which district I'd end up in, or if I'd even be accepted in the healing corps. Best to become strong before I enter this world.

'Naruto? No way' I chucked that fragment away as well 'I'm too old to attend the Ninja Academy now'

Most of the worlds here don't outright teach healing techniques. Even if they do, I won't be able to get one powerful enough to rival Recovery Girl's Quirk in a short while.

"Alright, keep it simple," I thought, tapping my fingers against my thigh. "I'm not looking to get stronger for the sake of it. I just need something reliable for now."

The news said that the students were injured but could be sustained by Recovery Girl's Quirk, so they weren't my primary concern. The Pro Heroes, on the other hand—they took the worst hits. I didn't know if I could heal to that level, but I'd have to trust Recovery Girl to handle things for now.

Not that the news would be reliable in this case.

First thing first, Power. If I want to learn healing techniques, I need to become powerful. A simple power system that can be taught to anyone. Not an academy. While academies might be safe and even grant a lot of skills, they were too restrictive for me. Something Open World, preferably a closed community like the Wizards in Harry Potter or sorcerers in JJK, where no one was able to completely monitor someone. A place where I can gain experience as well.

'Kaijuu No.8?' I mentally listed all the pros and cons of that world 'It's not a bad start. Kaijuu suits would give me instant short term power. Problem is, I'm not sure I'll be able to bring out their full potential'

'Besides' I thought chucking away that fragment 'I want strength that's my own, not some fancy suit of armor or a flashy weapon'

My frustration grew as I swiped through the fragments. The possibilities seemed endless, but each world had its drawbacks—too many dangers, too much power, or not enough room for growth. I needed something that wasn't going to crush me before I even had the chance to adapt. Something that had healing, a chance to become stronger without putting myself in immediate danger.

'A system world?' I thought, before immediately frowning and throwing that suggestion away 'Hell no

I gritted my teeth as I tossed another fragment away. "Not this, not this... damn it, there's got to be something."

'Wait'  I thought narrowing my eyes as I scrolled back to the Solo Leveling fragment 'I could just awaken in this and go to another world couldn't I?'

'Actually' I frowned scrolling through all the fragments 'I could just select fragments that grant power instantly and then just go to a weaker world and train myself up couldn't I?'

...

'Yeah' I nodded as I scanned all the fragments 'Yeahhhh'

'No' The void responded taking away all my fragments.

"The fuck?"

The void took all the fragments, scattering all but one fragment around me, as it presented the fragment to me. I stared at the single fragment floating in front of me, the void around me humming with an eerie silence. 

I turned the fragment over in my hand, the image of the world it represented slowly forming in my mind.

Demon Slayer.

I paused, weighing my options. Demon Slayer wasn't exactly a world where I'd get a free pass, but it felt right for where I was now. The demons could be dangerous, sure, but the Breathing Techniques were something I could adapt to quickly.It wasn't the most powerful world out there, but it had enough power to keep me interested.

"But..." I muttered as I looked up at the void 'Why not let me stack up a bunch of powers?"

The void didn't respond, staying silent. I huffed in defeat as I turned back to the Demon Slayer fragment.

As I picked up the fragment, information flooded into my mind. Upon entering a world, the physique and energy of the world would be integrated into me. The more worlds I visit, the more powerful my body, and the more unique types of energy I gain in my body. If I combined the bodies of worlds like One Piece with MHA, I would gain an insane amount of physical power, and then add on other worlds to it...

No, don't let the power fantasies get to your head.

Flipping the fragment over, a burst of crimson and gold light engulfs me, scattering sparks like shooting stars. The air shimmers and bends as the world around me collapses into a swirling vortex.

---------------------------

I open my eyes, as I look around my environment. The air here was clean, free from all the pollution from my last world. I never realized how bad air pollution got until I breathed in this pure air. I tried to move but found my feet stuck to something sticky on the ground.

Looking down, I saw myself standing in mud with shallow water. I looked around, seeing multiple small crops growing around me. I realized this was a farm, and that I may have accidentally ruined some poor farmer's harvest for the year.

I'm realizing this just now, but the outfit I'm wearing is not suitable for this era. People in Japan in the 1940s usually wore loose-fitting Yukata, with sandals, not Denim Jeans, T-shirts, and shoes with socks. I looked around trying to spot anyone, when I saw two people standing a bit away from me.

A man and a woman, most likely a married couple. The woman was hiding a bit behind the man, while the man gripped a shovel in his hand. I realized that a random young man suddenly appearing in the middle of their farm might be a bit...alarming.

"Uh, Hello, I don't mean any harm to you both"

They only readily themselves for combat more. Fucking hell, I need to get out of here quick before this situation escalates any further. Let's think, I could ask them for a direction and they'd let me leave, maybe. Uh, which fucking place do I ask for? I don't know much about Demon Slayer.

"Do you know where Mt. Sagiri is?"

This was one of the only places I knew in Demon Slayer. Coincidentally it was the place of the water trainer. Killing two birds with one stone...Hopefully.

The farmer doesn't lower his shovel, eyeing me warily. The woman behind him clutches her sleeve, her eyes wide with uncertainty.

"Mt. Sagiri?" The man repeats, his grip tightening on the shovel. "A week's journey, maybe more. Are you lost, boy?"

I nod quickly, trying to remain calm despite the tension hanging in the air. "Yes, lost, just need to get there."

He glances at the woman, and after a long pause, he gives a slow nod. "Head that way," he gestures towards a distant path winding through the fields. "But it's dangerous up there. Best be careful."

"Thank you," I mutter, not daring to stay longer than necessary. As I take a few cautious steps back, I give them a polite nod and then begin heading in the direction he indicated.

It seems the journey to Mt. Sagiri isn't going to be easy, but it's my best shot for now. I just hope I don't run into any demons along the way.

Thanking the old man, I quickly set off towards the left. After having traveled far enough from the farm, I stopped as I assessed my situation. I have no money, so I can't get any carriages, meaning I'll have to travel an entire week on foot.

I sighed, running a hand through my hair as I stood at the edge of the path, watching the wide, open fields before me. Great. A week on foot with no supplies and a target on my back. What could possibly go wrong?

I shifted my focus to the more immediate problem. Survival. The thought of trying to find food, water, and shelter while avoiding demons made my stomach tighten. I knew demons roamed the area at night, and I didn't have a clue how to protect myself. I could barely even run if something came after me.

I tensed myself up, as I saw the approaching night.

---------

Night 1

I found myself in a cave for my first night. I had no light source at all, and I could not look in, to see if wild beasts or demons were inside the cave. I scanned the cave from head to toe. No whiff of piss, no scratch marks, no smell of rotting.

If the night had been any warmer, I would have considered just traveling in the night, but with demons roaming around, and nighttime being extremely cold I had no choice but to take a risk and go to sleep in the cave.

I hugged my knees to my chest, trying to conserve body heat as I kept my ears perked for any sounds outside the cave. The eerie silence was unnerving, but the rustling of trees in the distance reminded me that there were still dangers lurking out there.

Shaking my head to push the thoughts away, I focused on staying as still as possible. I couldn't afford to make any noise or draw attention to myself. All I could do now was wait, hope that the night would pass without incident, and try to find a way out of this mess by morning.

Despite the discomfort, my eyes started to feel heavy. The exhaustion from traveling all day, combined with the lack of food, finally overtook me. I let myself drift off, hoping for the best... and praying that when I woke up, I'd be alive to see the sunrise.

Hopefully, other nights will go better.

Night 2

Today was a day of small victories. After walking for what felt like an eternity through dense forest, I chanced upon a small stream. The sound of running water was music to my ears. I drank to my fill and filled my flask. The pangs of hunger continued, but at least thirst wasn't an issue anymore.

I caught a glimpse of edible berries around. Although it wasn't enough to keep me fed, it provided some stamina to continue. It had been exhausting trying to constantly be on the lookout for these demons. Fortunately, sunlight prevented them from approaching during the daytime.

With dusk drawing close, I spotted a hollow tree with which I could spend the night. It was claustrophobic, but it protected me from the biting wind. I slept more lightly than the night before. I could hear the low growls of a demon in the distance, causing me to shiver at what I was up against.

Night 3

The forest seemed endless. My legs were killing me as I had walked all day. Fucking hell, I really took modern technology for granted. Traveling around in cars and trains was something I really fucking missed right now.

I chanced upon the remnants of a demon's recent feast. Pick-cleaned bones and burnt earth told me that there had been a Demon Slayer who had battled here in not too long. I could hope only that he had been left alive.

Tonight I constructed a sort of rough shelter of branches and leaves. It was very primitive, but it was something more than the cave or the hollow tree. The pangs of loneliness have started to hurt me. The silence in the forest is haunting only with rustling leaves and the far-off cry of distant animals.

I tried to focus on the shelter I had built—nothing more than a lean-to of branches and leaves—but the silence felt suffocating. There was no comforting hum of city life or even the distant sounds of other people. Just the wind, the trees, and the occasional rustle of wildlife. 

I couldn't ignore the hunger either. My stomach growled, the emptiness inside me a sharp reminder of how far I had come from any semblance of comfort or safety. No food. No supplies. Only what I could forage or scavenge along the way. It was a struggle, and I knew it wasn't going to get easier any time soon.

As I lay in the rough shelter, staring up at the sky through the gaps in the branches, I realized just how small I was in this world. A lone traveler, stumbling through a forest full of danger and uncertainty. But the loneliness, the silence—it felt like it could crush me if I let it.

I took a deep breath, trying to calm my racing thoughts. I needed to keep moving. I couldn't let myself succumb to despair. I had a goal. Mt. Sagiri. The Water Hashira. If I could just make it there, if I could learn from them—there was hope. A chance to not just survive, but to grow, to become stronger.

I closed my eyes, hoping that sleep would come more easily tonight. There was no telling what tomorrow would bring, but for now, I had to hold onto the thought that things would get better. Even if the world around me seemed impossibly vast and unforgiving, I couldn't afford to lose hope.

Night 4

Today was tough, but I did manage to find a little silver lining. While on the lookout for food, I chanced upon some wild mushrooms. They were edible ones, thanks to knowledge from Wikipedia.

I managed to gather as many as I could and even light a small fire to cook them. Not much, but it was warm and filled.

The warmth of the fire was something I hadn't felt in days. And now, for the first time, I nearly felt less alone. The whispers of the forest were quieter or maybe I was finally starting to find a sense of peace in all this noise.

Night 5

Today was a very hard climb. The forest opened into rocky terrain as I ascended up a steep hill. The further up I climbed, the colder it got, but the view was well worth it.

From the top, I could see a faint outline of a village in the distance. I finally found civilization.

Night fell before I could reach the village, so I had to settle for a small alcove in the rock. The air was thin and biting cold. It wasn't much, but it kept me alive. Tomorrow, I'll reach the village.

Night 6

The village was a ghost town. Houses stood empty, and the air reeked of death. I didn't have to look far to find the cause: demon tracks were everywhere. My heart sank. I had hoped to find people, supplies, maybe even warmth.

Instead, I found ruins.

I've barricaded myself inside one of the more solid houses. It was a gamble, but I needed sleep. The feeling of demons roaming the streets on the outside made my spine shiver in fear. Tonight will be the test of my bravery.

---------------------

*Oof*

Picking myself up, I prepared myself for the last day of this journey. I haven't eaten in like what? 5 days? I was lucky enough to find a small stream of water. I have no idea whether that water was drinkable, but I could care less about that right now. At least it wasn't still water.

Looking up, I saw the sun setting. Looks like it was going to be nighttime soon. Getting up, I once again set off to find any form of shelter for the night. The houses were nice, But I'm not nearly desperate enough to live in a village of demons for the second time in a row.

Walking a bit ahead, I saw a shrine ahead of me. Walking up to the shrine, I found it to be abandoned. I circled around the shrine. My instincts were telling me that I somehow knew this shrine, but I couldn't put my finger on it. 

Opening the door. I found the shrine to be empty with cobwebs litering the floor. I carefully stepped inside closing the door as I sat down on the floor. After searching the shrine, I found some mats I could use. Laying them down, I went to sleep for the night.

--------

My eyes went large in panic as I hastily got up from the bed. My instincts were roaring at me like crazy for some reason. I got up hurriedly, slipping as my brain went haywire as it does when you get up from bed too fast. I quickly got out of the shrine, running into the forest nearby.

I have no idea why I just dashed out from there, but it's best to listen to my body in these cases. Sure enough, I heard footsteps approaching at an inhuman speed. I heard a loud bang, most likely the demon breaking down the door of the shrine.

Shit, I didn't roll up the mat before I left, it definitely knows someone was here. I look around and I see a small patch of wet mud. It's a bit disgusting, but I need to cover up my smell with the smell of dirt or the demon will sniff me out.

I jumped in the mud, hoping it wasn't poop as I lathered it over myself. I immediately went into hiding in a deep bush, and I covered my nose and mouth. I only breathed occasionally from my mouth, since breathing from the nose would make too much noise.

My heart stilled, as I heard footsteps approaching the forest. I slowed down my breathing, as I hid in the bush. I didn't even try looking at the demon, there might be a small chance its instincts could alert it of someone watching.

The footsteps approached the area where I was hiding. I held my breath and clamped my mouth shut as I closed my eyes as the footsteps approached closer to me.

The footsteps stopped a distance away from me. No sound was made in the next few minutes as I lay down on the ground. After a while, the footsteps started to go away from me. Eventually, they faded away, to the point where I could no longer hear them anymore.

Even if the demon disappeared, I was too paralyzed to get up from the ground. I think it's best for me to just stay here until the sun rises.

*BANG*

A huge sound echoed, as the tree behind me burst out in tiny pieces of timbers.

"Huh? I thought for sure the human was hiding behind there. Maybe it already escaped"

The demon then vanished. Its footsteps echoing away as silence filled the forest. Of course, I was not aware of it leaving, because I was lying down, unconscious from shock.

---------------

Opening up my eyes, I look around myself. Rubbing my eyes to clear the blurriness from my eyes. I look around, finding myself in a small room. I lift my hands, only to see the clothes on my body replaced by the clothes of this era.

I looked around the room, noticing the lack of decorations. There were multiple swords hanging from the wall, or at least, their sheaths. Multiple fox masks were hanging from the ceiling.

While I was scrutinizing the room, the door in front of me slid open. I turned around to see who it was. An old man wearing a blue Haori and a Tengu mask. He had a sword hanging from his waist. To anyone who has watched Demon Slayer, it was clear who the man in front of me was.

Sakonji Urokodaki.


Tip: You can use left, right, A and D keyboard keys to browse between chapters.