Welcome to my first Kamen Rider story! This is my first time writing a fanfiction, So please be nice to me. I'm just write this for fun.

Disclaimer: I don't own Kamen Rider or Rosario+Vampire. They both belong to their respective owners. I own only this story and my OC.

Now then, without further ado. Let's go!

"fuuwa" I yawned as I looked at the sight behind the bus window with my dull blue and violet eyes.

"Man. . . why did I chose this in the first place?" I thought out loud as I continued looking at the window.

Oh that right, I don't have a choice. Why does luck have to this bad? I thinking back what happened before all of this.

I walked with a black backpack at my back. This is it. I smile as I continued walked a little faster. This is going to a fun day.

Oh hey, I forget to introduce myself. Don't want the reader to confuse who their reading, do I? The name's Ryūzaki Reigō, 16 years old. I have shoulder-lenght jet black hair, brushed down like Minato Arisato from Persona 3. I have a heterochromatic eyes. My right is blue while my left eye is purple. As for my clothes, I wore a black T-shirt with a blue hoodie jacket. I wear a dark blue jean and a pair of black sneaker.

The reason I'm exciting is that I'm going to the Anime Convention for the first time. In my backpack is the Chalice buckle and the Rouze cards. I have a set of every single cards! I am a very huge fan of Kamen Rider. I want to cosplay as a Kamen Rider but I don't have enough money to buy the costume.

I walked as I begun to see the Convention. My exciting grew as I walked ahead. When suddenly-

"Ch...a..li..ce"

"Hmm?" I stopped as I looked around. Weird, I thought I hear something. Meh, must be my imagination.

"Cha...l...ic..e"

Okay, I am not hearing thing. I quickly looked around as I search where the voice coming from.

"Ch.a..lic..e"

The voice started to get a little louder, but where is it?

Suddenly, my head started to get hurt. I brought my hand to my head.

"AAHHHHH!" My head felt like it going to burst!

"Cha...lice"

Then everything went blankness as I started to pass out cause of the pain.

Unknown to me, a black static started to appeared and wraped my body and my backpack before It's disappeared along with me.

As we can see here in the dark room. We can see a room with a desk, a sofa and large window with a figure sitting on the chair.

The figure was wearing an all-white priest with a errie glowing white eyes. This is Tenmei Mikogami, the headmaster of the Yōkai Academy and one of the Three Dark Lords.

Mikogami was reading some paperwork. Until he felt a power that unlike anything before.

"This power. . . It's feel like Yokai but not at the same time. It's feel so. . . ancient and powerful. It's look like something interesting is going to happend soon." The headmaster grin darkly as he begun to stand up from he chair to search where the power coming from.

"Ouch, what hit me?" I groaned as I begun to woke up. I looked around and saw that I was in some sort of forest. I slowly got to my feet. . . only to feel something around my waist.

Glancing down, I saw a buckle with a red heart symbol. It was the Chalice Rouzer. I raised my eyebrows.

"Weird. I thought I left that in my backpack." I touch it and realized that it feel like a metal more than a plastic. I tugged it, but It won't came off! It's like someone put a glue on it.

I begun to think why the belt won't come off, until the weight of my waist become lighter.

"Hmm?" I looked at my waist and see that the belt nowhere to be found.

"Wait, where did the belt go?" I searched around but nowhere to be found.

"Damn, the belt where is it? It's my first collection." I begun to think the Chalice belt. Then my waist begun to feel heavier. I looked and see that the Chalice belt is on my waist.

I blinked once, twice. I message the bright of my forehead.

"I must be imagining thing. There no way I see that." I felt something in my pocket of my jacket.

I pulled it out and see a Rouze card. I looked at the card and see the imagine of the mantis with the letter "A" on the left corner of the card.

I don't know why but for some strange reason, It feel like the card are calling to me.

Then act on instinct, I swiped the card on the Chalice belt.

Then the belt announced in a robotic vocie. I found myself shocked and suprised.

CHANGE

A black static-like energy started to engulfed every detail of my body. As I completely engulfed, I felt my body begun to shift and change. I wore a full-form black bodysuit with silver gauntlets, a grey boot and a black armored pads on my shoulders that had a red lines running across the center of them with gold lines running along my legs and arms and above the shoulder pads. A reinforced silver chestplate cover my torso area, the armor had a red marking along the edge. A holster with a heart crest was attached to right side of the belt. I have a helmet over my head that was angular with two metallic horns sticking out of it, a red heart visor that cover my whole face, while my mouth was cover by a silver mouth guard.

I became Kamen Rider Chalice, the legendary Chalice.

I looked at myself with a shocked face. Not that I could see it.

"This is real." I shocked to hear my voice more deeper. I subconsciously step back in shocked. Who wouldn't when you find yourself not human anymore.

"If this is real. Then that mean I'm an Undead now. . .no the Joker Undead." I started feel my hand trumble.

"NO! I won't be that monster! This is me. I won't surrender to that thing!" I shook my head. I won't let myself be that monster! I am my own person.

But suddenly I calm down. I feel warm where the holster is. I opened the holster and pulled out the card. The card had an imagine of a person but had chains and a heart in the center.

It's was the Human Undead Rouze card. When I looked at the card, I felt calm and safe for some reason.

I begun to think of the reason why am here but-

"Well, what do we have here?" an errie voice spoke.

I looked at the direction of the voice and see a person that look like a priest with an errie glowing eyes.

My body started to get tense as he see me like this, he brought he hand up and said.

"Easy there, I don't come to hurt you or anything. I just want to know who you are." If he trying to be nice then he look more menaced then he was before with he dark grin and glowing eyes.

"Why do I have to trust you?" I asked.

"You looked like some one who are lost and don't know where to go and you're very interesting yourself." He spoke.

Inside my helmet, I have a suspicious look. "Me? Interesting?" Then he spoke.

"Yes. I find myself curious to who you are. Would you please return to your human form? So we can talk normally." I think for a moment and then started to realize I don't know where I am.

I started to relax but I don't let my guard down. I swiped the Spirit card in my hand.

SPIRIT

I reverted back to my civilian form. He had a strange look on his face but quickly disappeared.

"Well, that's an interesting." He said creepily. I feel like the back of my hair started to stand up.

"So, who are you?" I asked.

He chuckled. "It's rude to not introduce yourself before asking someone."

I looked at him and sighed. "Fine, Ryūzaki Reigō. Now, who are you?"

"I am Tenmei Mikogami, the Headmaster of this Academy." It is just me or his eyes just glowed a little brighter?

I raised an eyebrow at what he said at the end.

"Academy?" I asked.

"Yes. Yōkai Academy, where all monsters learn how to blend in with human society and learn to live in peace with them." I froze at hearing that.

'Wait. . . Monster? It only just a myth that scare little children in their dream but now that I think about it. I just turned into Chalice just now. Why do I deny it?'

"From the look of your clothes, you're not a student here." He said.

"No. I'm not a student here. I don't even know where I am." I said.

He chuckled. "Then why not enroll to this school for a while. I sure you don't have a place to stay. This school have a dormitory."

He was right. I don't know where the hell I am and I don't have a place either. I begun think for a moment and decided that, I just roll with him for now.

"Fine." I finally said.

"Then, follow me." After he said that, he turn back and walk. I begun to walk behind him.

'It's look like thing are going to be interesting this year.' He chuckle darkly.

You know, for some reason. I have a really bad feeling about.