Hello, welcome to a crossover between Ultraman Geed and Highschool DxD.

I honestly have no idea why I tried to do this.

Now onto the story.

Ultraman GeeDXD

Capsule 0: Prologue

Where am I?

It's so dark here….

What happened to me?

I noticed a spark of light shining behind me….

I turn to see something that definitely surprised me as I saw a huge red door, one as much as big as the one from Kingdom Hearts 1, with black chains wrapped around. It also had huge yellow eyes and sharp teeth.

What is this?! I felt uneasy staring at this door….

"Whoever opens this door will gain an unmatchable power, but know that with such a gift comes great responsibility. Only one ready to carry a heavy burden may open it."

What is it talking about? Why I would need power? And a heavy burden would be placed upon me?

I definitely should stay away from this door. I decided to walk backward, but suddenly the ground starts to shake and a hole is formed where I am standing.

I fall in an endless bottom of darkness.

"Ahhhhhhh!" I could only scream in fear.

"Ahhhhh!"

I woke up in my bed, sweating profoundly. What the hell was that? This dream looked so real!

Whatever this was, I couldn't let it bother me because the alarm clock next to me started ringing and I turned it off. I breathed and calmed myself. Well, a new day begins. I couldn't stand around thinking about this strange vision forever since I had more important stuff to do.

"*Yawn*" I exited my bedroom and started to prepare myself for another day.

Right, I better introduce myself. My name is William Yuta Oki. I am just your average 20 years old Japanese college student.

I had short black hair, brown eyes and use a red-framed glasses. I was currently tiding my hair through a mirror, removing the bangs that were covering my forehead and giving myself a tuft hairstyle since my hair got messy while I was sleeping. I dressed a white shirt with long sleeves shortened up to my elbows and blue jeans.

I lived in a small apartment complex since I couldn't live with my family due to the location of the college that I attended. It had a room for my bedroom, a kitchen, and a bathroom. Small, but good enough for me.

I was having breakfast when I decided to stare into a photo I took with my family after my success in the college's admission test. 5 people were present in it, all Japanese with black hair and brown eyes. I was in the center with my parents in the superior left and right of the scene while my siblings were in the bottom part of the image.

In the upper left was my dad, Takuya Oki. He was a man in his early fifties, he was wearing a short-sleeved white shirt and smiling at the camera.

At his side was Miki Oki, my mom. She was in her late forties, dressed in a short-sleeved t-shirt, had long hair in a ponytail and was also smiling softly in the scene.

In the bottom left was my 15 years old little brother Yuya. He had medium length hair with a bang in his forehead. Dressed in a short-sleeved red t-shirt, he smiled giving a thumbs up with his right hand.

At his side was his twin sister and the youngest of us, Yumi. She had long hair and smiled cheerfully giving a "V" sign with her right hand.

I smiled softly at the photo.

The funny thing about my parents is that they decided to give me a foreign and a Japanese name only because I was born outside of Japan. Strange, but I still like my name.

Also, they gave birth to us much later compared to their friends because they first wanted to gather enough money to pay for our education, which I am also grateful for them.

Although I still have to work part-time to pay for some of my needs here in my 'new home'.

As I prepared myself to go to the local market, putting my red sneakers...

*Ding! Dong!*

Huh? Who is at this hour?

"One moment. I am coming." I replied.

Once I opened the door, nobody was waiting except for a brown cardboard box.

Ok, strange.

I took it inside and decided to open it.

I removed the bubble wrapper and some newspapers that obscured the item I was looking for. When I found it I was surprised, it was Ultraman Geed's set to transform. The Geed Riser, the Loading Knuckle and some Ultra/Kaiju Capsules.

You see, I am a huge fan of Tokusatsu, especially of Ultraman and Kamen Rider since I was 10 years old. This time I planned to order Geed's transforming items to attend a convention for fans. I was finally happy that it came.

I think I can go to the market later. Right now I wanted to examine this merchandise.

The Geed Riser was a red device with the size of my hand that possessed the symbol of a white themed DNA cylinder at the center of it. The Loading Knuckle was a black device that was used to hold two capsules that would be scanned by the Riser. The Ultra/Kaiju capsules were mini items that depicted the images of the Ultraman and Kaiju with a switch at its side that needed to be pushed to load them into the Knuckle, also showing an orb on the Ultraman/Kaiju.

I activated the Ultraman and Ultraman Belial's Ultra Capsules, putting them into the Loading Knuckle. Afterward, I slide the Loading Knuckle to the Geed Riser as I press the trigger in it.

"Kimeruze, kakugo! (Time to get ready!)" Was the only thing I could say at the moment.

What happened next was not what I expected. The Riser emitted a strong white light that engulfed me in it. Taking my consciousness and making me fall on the ground.

BGM: Velvet Room theme, Persona

When I woke up, I was in what could be considered my version of the Dive to Heart of the Kingdom Hearts franchise.

The platform was blue and had a picture of me in the same position as Sora/Ventus. It also had a picture of my family smiling in the upper center of the circle. There were many "X" symbols where Sora's crowns were supposed to be.

"Where am I?" It was my only reaction at the moment.

"It seems you finally arrived here." Someone called me.

When I turned to face the person I actually became scared. The one calling me looked just like the Truth from the Fullmetal Alchemist. In complete white, with no eyes and nose, only a mouth and ears. At least he wasn't giving me the creepy smile but I shouldn't let my guard down.

"Don't worry I'm harmless." He said calmly.

"Who are you? Why you brought me here? Are you God?" I asked curiously.

"No, I'm something far more complex, you could say that I'm the will of the universe or reality. Whatever sounds better for you. God only controls a part of the Earth after all." Ok, he doesn't sound like a troll at least.

"I called you because I need your assistance." Seriously?

"And how I could possibly help you?" I asked him.

"I would like you to leave a mark in a certain world." I raised an eyebrow. A world?

"But why me? I'm just an ordinary guy."

"It's because you picked my interest. You are one of the few humans who truly understand the real meaning of "humanity's infinite potential"." I only looked at him weirdly.

It sounds ridiculous, but watching many movies, shows, animes, reading books and playing some games made me ponder and consider that mankind's greatest power was "infinite potential", meaning that as long as we don't give up, we can always reach our goals and fulfill our dreams. Stupid for some, but that's what keeps me driving forward until my last breath.

" How exactly I can help? You want me to go to this world only for that?" I asked seriously to him.

He looked serious back to me and said:

"Before I give you a proper answer, let me tell you that in case you accept it you won't have to worry about your family. Time in the world you will be sent moves considerably faster there in comparison to your homeworld. Nobody will probably notice your absence. The only problem is the amount of time you might spend there to complete your task and it will be long before you be allowed to return." And here's the drawback of going to another world.

…..

This was definitely a hard task and most people would probably back off because of the amount of time it may take to be done.

"Is that all?" I asked to confirm if this was the only thing.

"No. As ridiculous as it may sound, dangerous Kaijus will be released in that world."

"Hold on, is this serious?"

"Yes, they simply can't be killed and only sealed in the objects that you probably know as the Ultra/Kaiju Capsules. And they can only be finished by an Ultraman's attacks.

More problems…..

"And let me guess, I can use the powers of Ultraman Geed?" He nods at my question.

"Well, I better go there then if nobody will be able to deal with them. Truth, while I fight these monsters, what I am supposed to impact there are not only the humans, right?"

"Truth, huh?" He looks interested at how I called him.

"Anyway. Yes, William, but tell me, how much of the supernatural do you know?" I looked confused at him because of this question.

"By your reaction, it seems not so much. Well, you see, in that world…."

He then explained to me how Angels, Devils, Fallen angels and every other supernatural stuff were real there. He also told me about a Great War that happened there and how violent it was. He showed me the Sacred Gears, gifts bestowed to humans by God himself there and how some people became important figures thanks to these mystical items.

Overall, I was surprised that the supernatural existed and most people were unaware of them.

"William, I also wanted you to go there and show to these beings how humans shouldn't be underestimated by none of them. Sadly, humans are only considered as lesser beings and weaklings to most of them."

This infuriated me greatly. So those bastards look down on us humans, huh?

"You know what? I'm eager to go there now and show them how humans are stronger than they look." I said determinedly.

"Truth" only looked at me with a smile, not of creepiness, but one of gratitude.

"Thank you. But's let's go back to the fights with the Kaiju now. I want you to know that there are also some Little Stars there that you can and must acquire to fight these fiends. Also, you will be given a boost to your strength, defense, speed, immunologic system and mental resistance alongside high pain tolerance." Cool….

"You will also be able to fly and teleport without needing to be an Ultraman." Hmm, nice…..

"Finally, whenever you need to transform into Geed, you will need to create a portal and jump in it to transform."

"Why?" I asked him wanting to know why I should do that.

"Do you want to risk being attacked while transforming?" Fair point…

"Also, chant the first thing that comes into your mind. It looks cooler this way in my opinion." He proudly stated.

"Ok..." I simply replied….

"Oh, wait. Since Geed is Ultraman Belial's son and thus he too has Alien Rayblood's DNA in him can I also have the power to control the Kaijus I defeat?" I asked remembering about Belial and Rayblood.

"Sure. Also, you will be able to obtain Ultra/Kaiju Capsules trough one more way."

"Really? How?'

"Simple, when you be fighting in certain moments, a certain energy condensed storm might appear in front of you, as if calling for you. The storm is caused by an ancient power that runs through the Earth, or more accurately the galaxy since it's very creation. It's like The Force of the Star Wars Franchise, but nowadays nobody knows about it, not even the supernatural folks. The power is called Chaos."

"Chaos?"

"Chaos is an innate power that exists within mankind. It is the power of desire created for oneself and a force that drives primitive life to keep on living, to protect others, as well as the heart's ability to keep hoping. Chaos is the very foundation of life, standing between light and darkness, and one can't live without it. Through your fights, your soul will eventually evolve and reach new heights because you are already using it by living as a human and a lot while fighting as an Ultraman."

"So infinite potential…"

"It applies thanks to the power of Chaos." No way, humans had such power and they live and die without even realizing about it.

"This is amazing! Can I also create new original forms for my Ultraman self with it? Can I also be strong enough to beat even god/divine-like beings?"

"Yes. But back to the storms, you could call them the Chaos Storms." How unoriginal. I deadpanned at this name.

"I think it's cool." He tells me smiling.

"Anyway, to obtain a new Capsule, approach the storm and seize its winds, literally."

"How?"

"I'm sure you will find a way eventually. But don't worry, you can contact me in your dreams so I can answers whatever questions come to you and help you train."

"Yeah, this actually helps at least. Well, I guess I'm ready." He seems thankful that I will go.

"Good, but one more thing."He calls me once again serious.

"What now?"

"No matter what happens, don't let the Capsules, either Ultra or Kaiju, fall into the wrong hands."

"Why?"

"Once you acquired a certain amount of both of them combined, a very Special Capsule will manifest itself on Earth."

"Right. And what's the matter with this one?"

"It has the power to do literally anything. It can destroy Earth, the Galaxy and even the very reality itself. Things like absolute immortality and/or resurrection of the dead are nothing compared to what it can truly do."

I can clearly see the being distressed and actually worried if such power fell in the wrong hands.

"Although you will probably be the only one able to really use the power of the Capsules, you must not let it fall in the possession of the wrong people mainly because it also can't be destroyed, not even by its own power."

Yeah, if something like this ended in the hands of a power-hungry bastard…

"I will ask once again. William Yuta Oki, are you sure you want to go to a world that is much more dangerous than yours?"

...

"...Yes." I replied with some determination now in my mind.

"Very well, then look at that direction." I looked to where he pointed and surprisingly I found the same door from my recent dream forming itself in front of us.

"No way! T-This is…." I gasped and couldn't find the proper words to describe the portal that gave me a strange vibe.

"Yes, it was mainly made to be your way to there. Remember, once you open it, you will gain unmatchable power, but with such a gift comes great responsibility. Only one ready to carry a heavy burden may open it."

I looked at the door and extended my right hand towards it.

…

I hear the sound of chains chuckling and they fall, soon disintegrating. The door slowly started to open and all I could see was some white light.

No turning back now.

"Sitting around doing nothing won't get me anywhere." Saying Geed's signature catchphrase, I ran through the door as it slowly closed behind me."

Prologue - End

And this ends the prologue. Now, some may hate me for this, but things will be "Cosmic/Space beings, such as Ultraman Geed, being eventually stronger than the supernatural beings of Earth". However, the MC will not start strong, he will get stronger by fighting others and he will only train to familiarise himself with the powers he posses. Also, after experiencing certain strong emotions he will acquire original ways to "power up" his capsules to use in his quest by awakening the power of Chaos inside him.

I will come up with different and original Kaijus for him to fight on some occasions, rather than the Showa and Heisei ones. If someone is interested and knows an interesting monster that doesn't belong to the Ultraman franchise or has an original idea I will gladly accept it too.

See You Next Time