Book 1 Of The Immortal Warrior Series: The Idiotic Strongest Fighter

Disclaimer: I own nothing, this is purely a fanfic for enjoyment.

Cross-over from various games, books, anime, manga, and movies.

The familiar characters you see here belong to their respected authors and owners.

'Thoughts'

"Speech"

Time*

Noise*

(Location)

Arc 1 - Chapter 1: What's Going On?

(Unknown Forest)

"Are you sure this is the right place? Remember, you were following rumors this entire time." Mikumo said to her husband, as she looks around the area for anything that hostile towards them.

"Should be, if not, we can just hunt down a few animals to eat, seeing how we're low on food." I replied to Mikumo, which I wished that I managed to learn that [Ki-Space Technique], where I can create my own pocket dimension to store my things.

Would have saved me lots of trouble. But, that's [Technique] is long gone and even after travel almost everywhere. I can't even find a book on it and all I know is that back in my era, before becoming an immortal.

There were still a few rare people knowing this [Technique], but are long dead and I didn't know about it until it was too late for me to get my hand on it.

Can't even recreate something I have no idea, to begin with. If I manage to get some kind of hint on how the [Ki-Space Technique] work, then with enough time, I should be able to recreate my own version.

"Well, at least I get to enjoy your cooking while we're out here in the wildness." Mikumo let out a tired sigh, but continue to look on the bright side.

I let a small smile on my face, that Mikumo have talents in Martial Arts and medical related subjects, along with a few other things. But, cooking? She has zero talent in it.

Luckily, other than my Martial Arts, I've improved my own skills in cooking, to the point I would have to say no being in Murim, be it mortal or immortal, would surpass my skills in cooking.

After all, being alone and wanted dead most of the time made me have to work on my survival skills, this includes cooking if I wanted to continue being alive and work on my Martial Arts.

Yeah, being an ageless immortal is great and all, but that doesn't mean I can live without food and water.

It's a good thing Mikumo know how to create water out of thin air. Still, don't know how she does that, and she wasn't willing to teach me, seeing how I wouldn't teach her the [Black Heaven & Earth Style].

Nonetheless, at least having Mikumo with me, I won't die from lack of water. That would be sad and very shameful for me to die from lack of food and water, where I have survived all these times, but killed by something like this? Yeah, not happening if I can help it.

It was very hard for me to find a drinkable water source in Murim while I was alone. There were many times I almost died from lack of water, more than I could count as my immortal life. Now, with Mikumo, the water problem is solved. Thank for the small mercy.

"There's that too, I guess." I replied to Mikumo, wondering if this just one of the reasons why Mikumo forces herself onto me.

Of course, if anyone asked how she forced herself onto me; well, it's more of she outwit me in many subjects unrelated to Martial Arts, then at the end, Mikumo took it as her duty to help me regain back my humanity.

The irony in this, seeing how I almost took her's away in the process.

And Mikumo accepted this as an equal exchange to being with me, really wished I knew about this so-called: equivalent exchange beforehand, when I was dealing with Mikumo.

"You do realize we've been here for weeks now right? Maybe the rumors were false?" Mikumo didn't want to deny the chance of her husband's dream, no matter how she finds this idea of making the [Black Heaven & Earth Style] a Heaven-defying level Martial Arts. As many have tried and failing, but very, very rare, people managed to do so, but afterward, they're dead some time later upon successful doing what others can't.

Of course, as a loving wife as she is; Mikumo is willing to go against the Heaven itself along with her husband. It took her a thousand years just to get her own husband to speak with her more than a few words, an entire sentence or two if she's lucky enough.

Mikumo has given up lots of things to be with her husband, even if it's forceful at her end. Like her Mother always said, you just have to keep trying until you successfully got what you want, unless someone dares try to get in your way, then get rid of them.

"Yeah, but at least we have something to do unlike some of the remaining immortals. Most of the time; they just end up wasting away their life by doing lots of things that bound to get them killed or trying to raise their Clan up to the top against others in a way to measure their prestige throughout Murim." I explained to Mikumo, that unlike most people, who fight for the prestige of their Clan or Sect.

I, on the hand, only want to make the [Black Heaven & Earth Style] the strongest. No need to care about what others think, as I let the fight speak for itself. Going for all actions and less talking.

"Also, don't get far away from me or you may end up somewhere that would take me a couple of days to get to, even with using [Ki-Enhance] to increase my speed." I said to Mikumo, who just nod at me, understanding about how close we're to reaching the passage.

It's funny how Mikumo has many talents, and zero talent in cooking, but there one thing that about her that made things very interesting and made me accept her.

Somehow, Mikumo's family is cursed to have no sense of direction whatsoever. In fact, to make this curse even more dangerous compared to other curses.

As Mikumo's family curse have the ability to traverse o.b.s.c.e.n.e distances in surprisingly little time on foot. This, combined with Mikumo's complete lack of direction, results in her having essentially no idea where she is at any given time, which allows her to miss her destinations by insane margins.

So yeah, if Mikumo doesn't keep her eyes on me and just walk on her own, then she will likely be somewhere on the side of the world or maybe in hidden locations, that shouldn't be possible to enter by no mean without require using a specific method.

In a way; Mikumo can bring both of us to a giant battle going on or to a place where some decreased immortal left behind an inheritance for others to grab. But, require going through trials to get them.

However, for Mikumo, she would sometime able to bypass these trials and reach to the end, to claim the inheritance by just walking to it in a few minutes. Which we did many times just for the heck of it while I was still working on my Martial Arts in protecting others than killing.

So for a while, both Mikumo and I continue to wander around the forest, to see anything that may lead us to the Heaven Realm, or any realm at this point. But, if possible, I would like to be the Heaven Realm.

That was until we found something very alarming. In the middle of the forest, if I can guess correctly, is some sort of weird giant white crystal made out some kind of materials that neither Mikumo or I could tell, and that's saying some with our experiences.

"Well, I can put this as another thing I haven't seen before in Murim. Man, the world has lots of things to offer, huh, Mikumo?" I said to Mikumo, who find this white crystal interesting.

"Even being an immortal, no one would be able to discover all there is in Murim. After all, even if you technically can, but as time continues to flow, then new things or old things will resurface into the world. So, in a way, no one, not even an immortal that focus on being an explorer for the entire immortal life would be able to record all the Murim could offer." Mikumo replied, knowing this is just one of the many things the world has to offer, for those that seek it.

Before we could even start figuring out what this white crystal is. When it suddenly lights up, brightening the entire forest.

On pure reflex, both Mikumo and I create a [Ki-Barrier] around ourselves, to defense against whatever the white crystal is about to do.

(Unknown Desert)

Once the light dies out; neither Mikumo or I could figure out what just happen. Because we're no longer in the forest and now we're in some desert.

The first thing we did was to use our [Ki-Sense] to find any life form nearby, just to be sure, as the desert may not be part of Murim. As we've been in many pocket dimensions created by ancient decreased immortals and most of the time, there will be close to zero living in those pocket dimensions.

After a few seconds, we found a group of people that just have a bit more [Ki] than the average mortal back in Murim. So, we may be still in Murim, but neither Mikumo or I have dismissed the idea we've already left Murim for a new world.

So, we quickly rush toward the group of people, if they're people that are.

I made sure to match Mikumo's speed while she following me, along with locking onto my [Ki], so she won't end up lost.

A few minutes later*

Looking at the group of humanoid people, with animal features, like animal ears, eyes, even tail, are fighting off some sort of black animal-like creature that doesn't contain a single drop of [Ki].

"Well, it looks like we're no longer in Murim that for sure." I thought out loud, as we watch the battle going on with these people using some sort of weapons like those bows, but made out of metal and firing some sort of projectile.

"I think that white crystal teleported us to place, wherever we are." Mikumo said to me. "Also, they may be human using some kind of [Techniques] that turn a part of their parts as animals."

I nod my head in agreement with my wife. No need to dismiss this idea.

"Should we go help them?" I ask Mikumo, seeing how I kind of lost most of my social skills than I realized until Mikumo try her best to fix this, but end up failing 90% of the time. When most of my focus continues to be on my Martial Arts.

So, I don't know if we should join in the fight or not, as this may be some kind of test they're going through as an entry test to a Sect around this area.

"I would say we should, as this would be a good way to get them to see us as friendly instead of hostile. After all, we're in an unknown territory of a powerful immortal, god, demon, whatever the race is in this realm." Mikumo replied to my questions, as she the first one to move and already appear in the middle of the battlefield, where the animal people are shocked to see Mikumo appear out of nowhere, then shocked, even more, when Mikumo killed off all the black creatures with just a few blasts of her [Ki].

In fact, Mikumo almost used the [Thousand Year Throw], which is where she projecting her [Ki] and releasing it all at once. Mikumo is able to not only intensify it to its highest level, but is able to concentrate it into the form of a gigantic white silhouette of the user.

Almost being the key word, when Mikumo held herself back when she notices how fragile these creatures were and easy to kill with just one attack from her.

I was about to head over when I notice how some of these people are still wary of Mikumo. Making me raise an eyebrow at this when Mikumo literally just killed off the enemies for them, but they don't look grateful at all.

Not wanting Mikumo to face this alone, even if she can, I appear next to Mikumo still, shocking the animal people further upon seeing me appeared as well.

One of the animal people, who happen to have looked less like an animal, and lack the animal parts somewhere around his body. But, he maybe has claws, who know, as it's visible. But, he is a bit hairy. But, he is tall, and have a muscular body, with yellow eyes.

He has a short beard and wearing an open dark violet vest that shows his c.h.e.s.t. A pair of long, extended fingerless gloves that reach his upper arms, beige pants, and brown leather boots.

"Thank you for the help, but we wish to know why you, human, came to Menagerie?" The more human look like man asks us a question, with a wary look on his face that matches the other behind him.

"I'll leave this to you." I said to Mikumo, as I wasn't the best to speak with others. As most of the times, it would lead to results of.

One: Many threats directed at me.

Two: People continue to beg me before I leave without a care or killing them off.

Three: We end up fighting, with me finishing them off without much effort on my end.

Mostly these three are the results of me talking to others. And Mikumo was the only very rare one that didn't end in any of those three.

Just as I was about to take a few steps back for Mikumo, to have a small private talk with the person, that may be the leader of this group of people.

A giant shadow burst behind Mikumo and me, where it lets out an earthshaking roar.

This caused a few of the animal people to fall in the desert, while some managed to keep their balance without falling, but barely for a few ones before the unlucky one follows the first group's example and fall in the desert as well.

"A [Horned Viper]! Why would one show up here?!" One of the animal people cried out in terror, making Mikumo and me a little unfamiliar of the name for this creature, which is very big.

Almost 200 meters high in the sky, and it looks like more of a giant snake and have the same color pattern as those black creatures, Mikumo just killed.

A giant snake with black skin, and two white horns on top of its head, with red eyes that seem to glow a little.

Once it finishes its earthshaking roar; I launch my attack right away. By channeling a good amount of [Ki] into my right fist while rotating the [Ki] to give it an extra force.

Using [Gate Annihilate Strike] directed at the [Horned Viper]'s lower body, with a fast strike instead of aiming for its head, which would require me a bit of time to reach before landing my attack. So it's better to attack from the ground, where I could still attack.

The [Gate Annihilate Strike] is a [Ki-Strike Technique], and that belongs to the [Black Heaven & Earth Style], with a whirlwind like an effect that sends the [Horned Viper] blast off from the ground flying, while whirling around in a spiral pattern.

Not a few seconds later, the [Horned Viper] exploded, showing everyone that the [Horned Viper] is killed right away before it could even do any harm, or worse, killing someone among us. By us, I mean those animal people.

I look back and see all the disbelief expressions on all those animal people's faces. Letting all those that see it, that none of them could please how easily I took care of that [Horned Viper] with a single attack.

"I'll be honest. I thought it would survive a few more of my attacks." I mumble to Mikumo, who nodded her head in agreement, causing those shocked animal people to look at me with a pale face now.

Realizing that I could dish out more than just that [Gate Annihilate Strike]. Even if the strongest [Ki-Strike Technique] in the [Black Heaven & Earth Style], but it no longer is. Thanks to the [Heaven Destruction's Techniques] and [Earth Rebellion's Techniques] I created, with both surpassing almost all the [Techniques] already created for the [Black Heaven & Earth Style].

"So, you wish to know why we came to Menagerie, was it?" Mikumo didn't care how freaked out these people are. This could be a good thing for her, so may as well take advantage of it and use this to help her get some answers of this realm.

A few days later*

(Unknown Continent)

So far, Mikumo and I are baffled at what we have discovered of this realm.

One: This is neither the Heaven Realm or Hell Realm.

Two: There are three main species in this realm. Grimm being the largest population in this realm. With Human and Faunus being in the middle second. With the non-Grimm animals as the third species.

Three: People here rely more on weapons than Martial Arts, with Martial Arts used as a support to increase the fighting power of the weapons.

Four: People here use this energy from the soul, which is [Aura] instead of [Ki]. Where [Aura] unlock these special [Semblance], that seems like a Clan's [Bloodline Ability].

Five: People use these materials, that possess [Elemental Energy], known as [Dust], to fight the Grimm, and among themselves as well.

Six: Instead of Martial Artists, that use [Ki], or any other professions back in Murim. Here, they have [Huntsmen] and [Huntresses] that trained in using their [Aura], weapons, and even their [Semblance] if they unlock it in their lives.

The Grimm are described as "creatures of destruction" and lack a soul; hence, they are unable to use [Aura]. They are also drawn to the feeling of negativity-such as envy, sadness, loneliness, and hatred-often congregating towards the source of these emotions.

While Grimm is initially mindless and heedless of risk during their youths, leading them to simply attack any humans/faunus on sight, some Grimm are so powerful that they have survived to live for hundreds of years. In that time, they will evolve and learn from their experiences fighting humanity.

This leads them to exhibit restraint and the patience to avoid taking unnecessary casualties in futile conflicts; instead, they stay close to humanity's borders, waiting for the opportunity to come where they can finally strike. Because of this, mankind is in ever-present danger, even in times of apparent peace. Furthermore, some of these Grimm will gain intelligent at some level as time went by.

Additionally, the Grimm appears to be the predominant species in this realm as humans and faunus appear to be limited to four primary pocket settlements referred to as Kingdoms, which are guarded by these [Huntsmen], as well as several villages with mixed success. Attempts by the Kingdoms to expand beyond their borders are often met with resistance and even failure.

So after learning these from the Faunus, which we found out that they were born like this. A race of human-animal hybrids. Where they have an inborn ability: [Night-Vision]. No matter what type of animals they are, all have [Night-Vision].

When I comment on how envious I was of Faunus for having [Night-Vision] and inborn weapons from certain animals, like tiger faunus, that have sharp claws and other dangerous faunus in different environments.

All the Faunus looked at me like I'm some new species that they just first lay their eyes on. No clue why this, but I got the feeling my single comment about wanting to be born as a Faunus may have placed us in a good position with these faunus.

Over the few days; Mikumo and I did our share of helping out around the place once we returned back to the main city: Kuo Kuana.

But, both Mikumo and I learned that it was best for me to stay outside the main city. Seeing how my [Dark Intimidating Aura], even when I tried my best to suppress it to the very limit. It was enough to draw all nearby Grimm toward my location.

This is why the [Horned Viper] appeared out of nowhere. It was tracking me down, due to my [Dark Intimidating Aura]. Not this realm: [Aura], but the aura formed by practicing the [Black Heaven & Earth Style].

So, I can only enter the Kuo Kuana for a few hours before having to leave. As Grimm would gather around, which Mikumo and I have taken care of before they become a problem for the Faunus.

Another thing was that killing Grimm with [Ki] would kill them easier than using [Dust] or bladed weapons. Well, if I were to change [Ki] into a [Yin Energy], then the Grimm would disappear right away for some reasons, while [Yang Energy] would just deal the same damage as normal [Ki].

Neither Mikumo or I could even understand how to use these so-called: guns. Really wonder how they advanced in technology so well. Then again, back in Murim, most people would focus on Martial Arts than in technology.

The mortal has advanced in technology in my time as an immortal, but not much, as the remaining leftover immortals would destroy these technologies as they see them as a threat to their ruling. No clue why, but I just toss it up as some of these immortals have some weird quirks that related to technology or something.

Anyway, I have zero talent in using any guns. While Mikumo is a complete natural in using any firearms, which the Faunus informed just saying guns wasn't the right term or something.

Either way, Mikumo show remarkable talent in using any type of firearms and could shoot down the target from a distance at any positions and moving as well.

In fact, it only took Mikumo just a few hours to master all the firearms available for her to use at the time. By at the time, I meant like around an hour or less for Mikumo to be so skillful at using each firearm, to the point, she out skilled some of those experts in using it.

And if she is given enough time, some of the faunus that left this place for the other continent. Would say Mikumo would even beat veteran [Huntsmen] that specialize in shooting from a distance.

Afterward, both Mikumo and I left as it's best not to stay around any longer. With the way, the Grimm continues to show up more often than they should. And the Faunus are already crowded in their only City.

Now, both Mikumo and I are heading to the only unknown continent that seems to be the shape of a dragon. Which is part of the continent Sanus, that contain the Kingdoms of Vale and Vacuo.

But, this is a dragon shape continent is considered a separate part of Sanus from what the people told us.

So, we head here first as it's known to be as the continent of Grimm. Seeing how it's the only continent that filled with so many powerful Grimm. It would be almost impossible to travel on land, with flying just a bit safer. Just a bit only, as it's still very dangerous in the air, where flying type Grimm will attack.

And with the Continent of Grimm filled with powerful Grimm. Then, those flying type Grimm would easily take down any flying vehicles.

Of course, it would take months to reach this continent, but for someone like Mikumo and me. Using [Ki] alone would allow us to travel impossible distance in so little time.

Well, this would have taken us a week or longer to reach, but it only took a couple of hours when we got lost and Mikumo was to lead us instead of myself.

And Mikumo's curse acted up right away and we appeared in a location filled with a massive amount of powerful Grimm surrounding us the moment we found ourselves in a barren wasteland, with rocky terrain and enormous purple crystals sprouting from the ground. The sky is stained a dark red, pools of a viscous, tar-like substance everywhere, that seem to spawn more Grimm.

It took some time, but we fought our way into a location, that seems to be a castle of some kind.

Now, I still have my goal of entering the Heaven Realm, but this Remnant Realm, which both Mikumo and I decided to call it. Since the people here don't know if the continents that have been recorded are the only land in this world.

Currently, Mikumo and I are carefully walking toward the castle's entrance, while keeping our guards up. As [Ki-Sense] is completely useless in this place, where these Grimm don't contain any [Ki]. Not even the [Yin Energy], which is used by the spiritual beings in Murim.

Once we've made it to the giant gate, where we find it already open for anyone to enter. But, neither Mikumo or I would fall for the idea this been like this for a long time and that someone, that own this castle, has opened it before they have arrived.

In fact, we got the feeling whoever live in this place filled with these dangerous Grimm must be powerful as well. If not, even more, powerful than all the Grimm nearby put together.

45 minutes later*

(Continent: Grimmland: Unknown Castle)

Almost an hour of walking around this castle; we have found what should be the main room for a meeting or the throne room. It could be either two as there are many times Mikumo and I had to attend some stupid meeting among immortals, and the meeting would usually take place in a large room that could act as a throne room for an Emperor.

So the moment we enter the throne-like room. We discovered there is a person already in this room and could be the owner of this castle.

Now usually I would just think this person as a neutral gender until I find out their real gender is, but the person almost has the same exact figure as Mikumo, but her b.r.e.a.s.ts are a bit smaller than Mikumo. So the person's gender is female; well, that's what I could tell by the body shape.

As the person, I'm going to have to think if this being is a person in the first place. Seeing how the person's skin is deathly pallor, covered with deep red and purple veins that run her arms and face. The sclerae of her eyes are jet black and her irises glow red. She has a black diamond-shaped marking in the center of her forehead.

She wears a very long black robe with red designs resembling eyes. Not that it would hide that body figure of her's. She also wears a ring resembling an insect on her right index finger. She has white hair formed into a bun with six offshoots from which ornaments are suspended.

"Welcome to my castle, challengers. Honestly, I expected the male to show up only and alone. But, I'll allow this, as it has been a long time I have visitors from my domain. I'm Salem. Now, are you ready for the final trial before grabbing your reward?" Salem welcome Mikumo and me, and look a bit too eager at seeing me here.

"Challengers?" Mikumo asked Salem, who look back at Mikumo with a small confusion flick through her glowing red eyes.

"Yes, challengers. Isn't this why you two are here? You have already completed almost all the tasks before coming here, for the final task. One: You have defeated an ancient Grimm by yourself. Two: Travel to this continent and defeat all the Grimm without being touched once upon arriving at the Evernight Castle. And now the final task. Which I will personally give you." Salem explained how Mikumo and I have already finished two of the three tasks.

Salem continues off without waiting for anyone to speak up, "The final task is for either of you two, to defeat me. Until I said the words: I surrender and being on my hands and knees at the same time. You can try anything to make me do this, either bring an army at me now or any methods you can come up with."

"Uh, what's the prize for finishing this last task?" I'm a little curious about what we would get if we were to finish the last task.

"You get to marry me and become the King of this land." Salem replied with a face of pride, believing we should be an honor to be marrying her.

I had no idea what the hell is going on anymore. This does not seem like something I would expect upon coming here.