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.

"Speech"

Time*

Arc 3 - Chapter 1

15 minutes later*

I looked around the place while being invisible via Domain Control: Elemental Manipulation - Light, Thermal & Sound. To bend and shift the light particles around me and manipulate my body heat to make it so I'm not visible, even on thermal vision. I go even further by suppressing the sound I make too. So far, I have been randomly walking around this place and learning something quickly. For one thing, this place seems to be in ruin.

Yet, for some reason, I had this gut feeling that this place is very dangerous and also something I'll regret leaving behind if I didn't get what was valuable in this abandoned factory. Where I learned this was a research factory due to research papers that were barely readable but not enough for me to tell what was being researched.

I quickly checked my history to search for anything that reminded me of this place, but nothing. So, for a while now, I have been walking with no direction in mind and seeing what would surprise me in this place. Of course, I wasn't going to walk around without my Magical Gloves. After all, with the feeling of the danger of this place. I have kept my guards up.

Looking around the place, I see many junks, but I could see advanced technology that no doubt beat all the ones I have seen up to now. Yet, they are broken somewhat. Either a crack somewhere or dismantled, with parts scattered around.

"What's this?" I raised an eyebrow when I almost walked past an interesting room, which happened to be a bedroom that was just barely intact with a bed and a bookshelf with some books that looked very dusty. Yet, this bedroom seems like a private one, much cleaner than the other rooms I have been to.

I have Chariot Requiem summon and have the books restored enough that they won't break down when I touch them. In hindsight, I should have done this with those research papers, and I might have learned something from them.

Grabbing one of the books from the bookshelf and checked the front cover to find out what this book was about. But found out I couldn't read a thing, making me frown since those research papers were written in Japanese for me to read, but not in this book for some reason; therefore, I slid the Fox Mask over my face to access the Language Analysis to give me access to the language used in this book. It only took a few minutes before my eyes, the words being changed into a translated version for me to read. Of course, if I remove the Fox Mask. The translated version of the book would revert to the original unknown language.

I have discovered it's a journal. I didn't care that this may be a private research journal and began reading the first page to see what was written inside.

I might have hit the jackpot in this world along with finding this place as well. Because I discovered that this is the world of D. Gray-Man with the guarantee due to this journal's first page is the discovery of a mysterious material named: Innocence and a summary about how it is made and what it's used for.

Grinning at this, I have an idea of what to make now, and hopefully, the Omnifabrication will help me recreate what I desire and maybe with all the leftover materials in this factory. It should be possible.

A few hours later*

I did it, and shockingly, there were barely enough materials to make it work.

I have recreated the Innocence: Crown Clown, but with heavy modifications to make it possible to work for me. For one thing, the Crown Clown would leech from my mana core to steadily grow powerful without limit and surpass what the original version could. In exchange, the Crown Clown would also increase my mana reserve to match its need to grow. By the rate of 10% per day. Sadly, I couldn't increase the rate past 10%, not due to lacking materials, which is part of the reason, but mainly because of all the modifications I placed that pushed it to 10% only. Nevertheless, I've finally gained a way to increase my mana reserve. Honestly, I wanted it to be double the rate like with Domain Control, but this is fine for me.

However, I discovered one problem when using the material to create the Innocence. The power source aka the Heart of Innocence. Every other piece of remaining Innocence worldwide would shatter when it was destroyed. Therefore, I switched the power source to my mana core. So problem solve. Whenever I use the Crown Clown, it would convert the mana from the mana core into the unique energy that power the Innocence.

Also, I made it so the Crown Clown is linked with the Fox Mask to replace the masquerade-style mask that comes with the Crown Clown. But, of course, I made it so the Fox Mask could be transformed into the appearance of the masquerade-style mask too. This way, I don't have to worry about finding a place to retrieve my Fox Mask when I lose it. I can activate the Crown Clown and regain the Fox Mask immediately. Going further with this linking idea. I got the Crown Clown to link with the Gold Experience Requiem to make it so the Crown Clown actually becomes sentient and under my absolve control. Also, I can channel Gold Experience Requiem through Crown Clown, making it another bonus in case I come into a world where I can't even partially summon Gold Experience Requiem and Chariot Requiem.

Speaking of Chariot Requiem. I discovered there were materials of Dark Matter along with the Noah Gene while recreating a modified Crown Clown. Something I put to good use as I turned myself into a Noah. But, without the whole memory stored inside the Noah Gene. That had to be removed, along with any bad side effects. That includes the irrepressible hatred towards Innocence and preventing other Noah Family members from detecting me.

Therefore, upon becoming a Noah, I kept my humanity and just made it so I could become a Noah temporarily, aka the Noah Form; I now have the power over Dark Matter as well, which is linked to Chariot Requiem. Similar to Gold Experience Requiem, and as a way for me to channel Chariot Requiem when I'm in my Noah Form.

With both powers of Innocence and Dark Matter. I now removed the situations I may encounter in the future where I won't have my Magical Items to help me and become weaponless. Of course, among the modifications I did to both Innocence and Dark Matter is that they can ignore world laws. Unlike everything, I have made so far. So, no matter what, both Innocence and Dark Matter will always work and not be nerfed.

If it wasn't for Omnifabrication, making it possible. Both Innocence and Dark Matter would likely try to do their best to destroy each other while being in the same vessel. But, the Omnifabrication did as I desired. So, I don't have to worry about blowing up or just ending up dead due to having these two inside me.

On another note, I didn't have enough to create another Innocence, much to my disappointment at this, but I'm happy with just gaining the Crown Clown, with a side bonus of the Noah Gene and Dark Matter.

After gaining the Crown Clown and Noah Form, I resume looking around the place to see if there is anything else I could take with me. I found out the Dark Matter triggered my danger sense; therefore, I can now walk around the place without having to keep my guards up all the time and check every corner of a new room before entering in case there is something dangerous that potentially kill me.

Up to now, with the help of both Requiem Stands. I have sensed no life form nor anything that contains a soul of a sort—making me wonder if I might have entered the timeline period before the Black Order organization has formed. If so, this made it a bit complicated for me since if the Black Order wasn't formed yet, then the artifact known as The Cube hasn't been found yet.

On another note, both Requiem Stands seem a bit weaker in the D. Gray-Man, which confused me, but I didn't mind this. Nonetheless, both are still overpowered and should be able to take out Akuma. If not, I got Crown Clown to deal with them and Noah Form to deal with unreasonable people.

I glance around the place, then use Omnifabrication in mind to seek out The Cube if it is in this factory by using it as a material for a Magical Item. Still, with the condition that will stop the Omnifabrication immediately the moment it's found or not inside this factory.

Sadly, the Omnifabrication didn't even stay active for a second, showing that The Cube isn't anywhere in this factory; therefore, I guess The Cube must be either found or in another factory like this one I'm in. Nonetheless, this just frustrated me because I still need to know what timeline I'm in and whether I'm in canon or out of it, be it before or after canon. Because if it is before canon, then I won't mind waiting for a bit to gather materials to build a one-time use to travel through time and enter the same timeline as the canon of D. Gray-Man. At least in that time, I have the knowledge to work with rather than go blind. Not that I don't mind going blind, as that would make things exciting and challenging for me.

Half a year later*

"Fuck. Where the hell am I?" I mumble my thoughts out loud as I have been trying to find out what timeline I'm in the D. Gray-Man world for half a year now. Yet, this entire world seems dead, with literally no life. It makes me think I might have entered a timeline or a version of D. Gray-Man where all life has disappeared, leaving behind only a ruined world. I didn't even find any Akuma either, much to my confusion during the first few months as I traveled to many places.

Of course, I made sure to use the Book of the End to check the history of the places I've been to. Yet, the history was too big for my mind to comprehend, and end up shutting down the Book of the End, preventing my mind from being destroyed by the overwhelming history buried deep in the places.

This is the first time I've experienced such a thing since I created the Book of the End. But, this didn't stop me from doing it repeatedly, just to be sure. Then, I quit once I realized this newly discovered weakness of the Book of the End. However, this alone was enough for me to tell that I'm way passed the canon timeline. Since I can read up to nearly a thousand years' worth of history. There is the chance I may just be before canon, but I have barely found some signs of the Black Order's existence. Therefore, I'm way into the future, and most likely in the world, where something must have caused mankind and every life form on earth to be erased. Even the Millennium Earl and the Noah Family are gone, and I've been trying to seek them out from the time I've traveled for half a year.

The idea of creating a one-time use time travel Magical Item wasn't even an option due to this world not having the materials for it. Sadly enough, I continued to move on, and maybe there is something else worth taking, like The Cube, for example.

A month later*

So, after traveling endlessly without any destination. I have decided to jump to another world since there is nothing much for me here. I've tried to seek out other Innocence for my usage, but nothing. Not even The Cube was found. I guess I was lucky to find the last remaining materials that were made for Crown Clown and the Noah Gene too.

There is something worth being considered good news: my mana reserve is at the point of me using almost 50% of all my Magical Items meant for combats for a solid hour while using high-end moves rapidly without any rest in between.

I place down five Shifting Shards and trigger the mana inside of it. Then a portal opens for me to jump through. So, with a small jump. I enter the portal leaving the ruined world that once D. Gray-Man for another as I've obtained all I needed in this world.

"Huh." I mumble to myself as I look around the area, surprised. I find myself on top of some building rooftop.

Quickly check and notice that I have difficulty using my Requiem Stands and my other Magical Items. This includes my Magical Gloves, and I can barely create a single microfilament wire. The Fox Mask and the Book of the End are working fine. The latter is somewhat acceptable as I can't transform it into its katana form. But, the ability to manipulate my history is working fine.

It's a good thing I made the Crown Clown and have the Noah Form. Otherwise, this world would become a lot more dangerous for me if I faced foes that could kill me with something like a bomb when I can't defend myself due to lacking the means to do so as most of my powerful defensive Magical Items are not available.

So, this just made me wonder if I should switch to a different world and skip this one. Then I panic a bit because I don't know if these Shifting Shards work!

Quickly, I set up the Dimensional Shifting, and to my relief, I can still jump to other worlds. Then, look around to see what kind of world I am in before thinking about leaving this world for the next. Since there might be something useful in this world to take with me as I did back in the previous world, I was just in.

However, going unarmed is not something I want at all. But, for the time being, I will have to go unarmed for the time being until I grab one of my melee weapons to deal with the enemy, which requires me to activate the Crown Clown or Noah Form.

As I looked around the area where I found myself in a neighborhood, yet found nothing that would help me find out what world I came into. But, seeing how about 99% of my Magical Items are offline, including the Requiem Stands, as both are hard to summon, but partial summon still possible. Thanks for the small mercy.

However, I discarded the idea of staying in this world when I noticed a familiar black-haired boy with glasses walking down the street with a couple of his friends.

"Shit, how come I come into this world a second time?" I question my luck to discover that I enter the same world with Conan Edogawa again, making me wonder if I will enter the Princess Resurrection world again in the next jump.

I glance over at Conan, then jump into the portal I still haven't closed yet.

A few minutes later*

I found myself in another neighborhood. The moment I came into this world. I quickly test out if there is anything wrong with my Requiem Stands and Magical Items. Lucky for me, nothing wrong with them, unlike the previous world I was just in. Just the thought of staying in the world of Detective Conan makes me feel uncomfortable. Furthermore, after thinking about it.

I realized I was in a completely different version of Detective Conan from the first one I came into. For one thing, I could still summon Gold Experience Requiem without much problem in the first one. Yet, the one I just came from did. This means that either this different Detective Conan has stricter rules over the world compared to the first one, or there are dangerous beings in that world that made it so other being with supernatural abilities related would be suppressed.

This made me realize that I must make mundane weapons to protect myself. Because if I didn't leave the previous world sooner than I already have, then chances are. I might die in that world without anything to protect myself since my Requiem Stands won't be able to fully summon themselves to protect me in the moment of danger. Of course, Crown Clown and Noah Form would make the chance very small, but it is still there.

So, with a few usages of Book of the End. I now have multiple types of Magical Gloves because it is mostly my main weapon other than a knife, katana, rapier from Chariot Requiem, and sniper. These five, including the microfilament wires, are my go-to weapons.

Therefore, when I come into a world that suppresses most of my Magical Items. I shall use the Magical Gloves that don't use my mana, but actual microfilament wires made and stored inside the gloves. It gives me a limited amount of wires to work with, but enough for me. If I run out of wires, I can just make more with Book of the End.

Now, to find out what world I'm in and plan what I could get out of this world before jumping to the next. Hopefully, this world has some women who suit my taste to have sex with—because trying to suppress the sexual urge just made it worse for me after a while. Making me almost want to use Book of the End to make it so I'm not addicted to having sex with women. But, I decide that this is part of me and will not remove it from my history.

"Oh, sweet. A manga shop." My eyes pick up a familiar shop I mostly come to in my previous life whenever I have free time to go out.

I knew my main priority was to find out what world I'm in, but looking through the manga shop could do the job too. Not that I wasn't aiming to buy a few mangas to bring with me to read out of enjoyment. Nope.

2 hours later*

"Ha? You think you can demand this manga from me just because you're a pretty-looking girl?" I stare down at the red-headed girl with a body figure that suits my taste.

A beautiful young woman with white skin, blue eyes, and a voluptuous figure. Her most distinctive feature is her long, crimson hair that reaches down to her thighs with a single hair strand sticking out from the top. Her hair also has loose bangs covering her forehead and side bangs framing her face. Her height almost matched mine by a few inches.

Her current attire is a school uniform, which consists of a white long-sleeved, button-down shirt, with a black ribbon on her shirt collar worn under a black shoulder cape and a matching button-down corset, a magenta skirt with white accents, and brown dress shoes over white crew-length socks.

Overall, I was surprised to see such a girl in a manga shop, and if that wasn't enough. I knew exactly who she was.

Rias Gremory, the main female protagonist of High School DxD. The heiress of the Gremory Clan after her older brother, Sirzechs, took the title of Lucifer. Also, she is a Japanophile who is obsessed with Japanese culture.

Rias glared at the human male for denying her the limited edition manga that she had been waiting to get her hands on, but as the manga series itself is considered very popular had already been sold out in many stores. Then, by some miracle, she manages to find a copy. Yet, she was just a few seconds too late before someone got their hands on it. So, no, even being commented on her appearance alone won't make her feel good; after all, she has already been complimented many times during high school and still is. Therefore, she is already used to being praised for her look alone.

"Besides, I already got my hands on it, which is mine to buy first. As the saying goes: First Come, First Served." I smirk at Rias, who is fuming at my remark, making me enjoy the look on Rias' face and if that wasn't enough. I plan to get her to serve me later without being in her peerage. I like being human and would rather not become a devil if I can help it. But, first. I need to figure out what timeline I'm currently at.

"How much do you want for it? Name your price." Rias snorted, putting on a confident smile, flipped her hair back and stood straight with her left hand on her hip. "Plus, you haven't even purchased the manga. So, why not earn yourself some extra free money instead?"

"Nah. I think I will keep this. After all, from what I heard. They won't make any more copies of this limited-edition manga." I lied through my teeth, betting that what I lied about was true. And going by the way Rias is now back to scowling at me. I say my lie became the truth. Sweet.

"What do you want?" Rias is trying her best not to use her magic to temporarily mind control this person to hand over the manga to her, but she can't due to other people watching them right now. If they were alone with no witness nearby, she would have done so right away.

"How about a kiss on the lip?" I lean forward while continuing to grin.

"Wh-What?!" Rias took a step back, where she could feel her face heating up, and her heart began to beat faster by the second.

"You heard me. A kiss. Then, this is yours." I wave the manga in front of Rias. "I think this is a fair deal. You get what you want and I get a kiss from a lovely lady." I knew how prideful Rias is and betting on that, I'm either at the early time of canon before Rias truly fall in with Issei or before canon. If it's the latter, it makes it much easier for me to seduce Rias.

"Wh-Why would you ask that?!" Rias blushed, for she didn't think someone would be so forward and she only has seen a few men in anime/manga that are womanizers would ask such a thing. She did not expect such a thing to happen to her in real life! Even though she has stayed in Japan for a while now, this has never happened to her, and now it's happening, making her have complicated feelings about this.

"Why? Because I see a beautiful girl before my eyes, and I can't help wanting to kiss her." I took a step closer to Rias, where she took a step back in return. "Unless..." I narrow my eyes, causing Rias to gulp. "Unless you still haven't got your first kiss yet?" I watch Rias' face becoming red. "Oh! This is just too good to be true! You still haven't got your first kiss after all!" I wasn't sure if Rias in canon ever has her first kiss with Issei or someone else.

"So?! Maybe I wanted to keep my first kiss to be with someone special!" Rias yells, with her face red, ignoring the fact that there are people nearby watching.

"That's all I need to hear." I walk up to Rias and before she or anyone could do something. I pull Rias closer to me by her waist, then under everyone's eyes. I kiss Rias on the lip, where I can see the shock deep in Rias' eyes that she couldn't believe I kissed her right in front of everyone without her permission. Then, a few seconds later, I took a few steps back while placing the manga in Rias' hand. I took a familiar pose, with my right thumb pointing to my face. "You expected to have your kiss with someone special? Too bad! It was me, Daisuke!"

Rias broke out in shock when she heard the famous reference, forgetting about losing her first kiss to some random person.

"Damn you, Daisuke." Rias took a few steps forward confidently, holding onto the manga in her left hand.

"Oh? You're approaching me?" I held my arms out, welcoming the challenge. "Instead of running away, you're coming, right to me? Even after I gave you the manga, you desire?" I follow up the next line with a change of my own, where Rias continue to take another step forward with that smirk on her face. The eyes alone, I can tell she loves every moment of what's happening.

"I can't hit you without getting closer." Rias said to Daisuke, trying her best not to squeal at what she was doing now.

"Oh ho! Then come as close as you like." I begin walking forward. The distance between Rias and I shrinking rapidly.

It didn't take long before Rias and I got close enough to reach each other.

Then, before Rias could do anything, I stole the manga right out of her hand. "Too slow, too slow!" I said to the fuming look on Rias' face, but I could see how happy she was right now through her eyes. Then, I bring my left wrist to my face, looking at the wristwatch, which isn't there. "Oh, look at the time. I got to go. Here you go, see you!" I hand the manga back to Rias and walk right out of the store before Rias can say anything.

As I was a couple of meters away from the store. I counted how many seconds before Rias came out of her confusion.

"WAIT!"