Contract with the Dragon Part 1

Crossover with Fate/Stay Night and Kamen Rider Dragon Knight. This first Chapter is Shiro Emiya gets to be Kamen Rider Dragon Knight after finding the Advent Deck, meets Kamen Rider Wing Knight and encounters the Gelnevts Minions before the new Holy Grail War begins. This is just Part 1.

Disclaimers: I own nothing, the ones who made it are the real owners.

10 years ago an unknown fire erupts from Fuyuki City, it's origin remains unknown and many people perished in that disaster they call it the Great Fire. Still the people of Fuyuki was still able to recover from the aftermath of the Great Fire, there was a battle before the Great Fire happened.

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Fuyuki Parking Garage

A woman was heading to her car but as soon as she walk pass a mirror strange humanoid monsters with a metal X on their back emerges from the mirror. They follow the woman than they grab her but she doesn't seem to notice what's grabbing her and pulling her back to the mirror, that's because she couldn't see them at all, not even the security guard who's busy reading his comic book could see them. Before those humanoid monster dub Gelnevts Minions can pull her into a mirror a rider who looks like a Knight in a motorcycle burst out of the mirror causing the Gelnevts to let go of the woman.

This rider in the motorcycle is Kamen Rider Wing Knight, the Gelnevts ignore the woman they tried to kidnap and focus their attention on Wing Knight who prepares to fight them. Wing Knight starts smashing them with his bike but the woman and security guard doesn't know what he's doing because they can't see what or who he's fighting, the Gelnevts who are being toss around by Wing Knight than they use their X shape weapons but Wing Knight use his Lance Sword Advent to defeat them all, then all of Gelnevts retreat by going back into the mirror. Wing Knight deactivates his armor revealing himself to be a human being name Len.

"You alright?"

"What happened?" The woman ask Len what happened.

"Nothing happened you just fainted", Len making up what just happened as he helps her up.

Before he leaves he looks at the security guard who just waves goodbye to him and Len rides away into the road.

"Kamen Rider!" Len changes back into his Wing Knight while driving in road where there no cars driving alongside him.

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Emiya Household

"My name is Shiro Emiya, well Emiya is by adopted family name, my adopted father is Kiritsugu Emiya, died of illness decades after he and his wife adopted me. Still my adopted mother is still here with me, her name Irisviel Von Einzbern and she was Kiritsugu wife, I have no idea about her albino appearances but it's better I don't know. Aside from my mother Irisviel, my school teacher Taiga Fujimura and my classmate Sakura Mato always stop by for breakfast and supper. This household is supposed to be the wedding gift after Kiritsugu married Irisviel. My greatest desire is to be the Hero of Justice which I inherited from father Kiritsugu before he succumb to his illness and died."

"Shiro dear breakfast is ready!" Irisviel calling him for breakfast.

"Coming mom!" But before Shiro can leave his room he finds a strange object on his table next to the lamp.

"Advent Card", Shiro said after reading what the card says, he slips it into his pocket because he wants to know what it means later on.

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Kitchen/Dinning Room

"Shiro hit me!" Taiga asking for food from Shiro.

'Oh yeah Taiga Fujimura is so energetic when it comes to food all the time. Whenever someone mispronounces her name by calling her tiger she's very scary when she's mad and she is really going to hurt someone when she's mad.'

"Sensei your always energetic when your hungry for food", Sakura said to her smiling.

"Quiet for a minute the news is coming", Irisviel said as the Fuyuki news starts.

"Strange gas leaks have been occurring throughout the city, the origin of the gas leak remains unknown for now. In other news many more people have gone missing and a strange mask vigilante have been seen making strange tricks with his bike."

"Gas leak, people going missing and now a mask vigilante", Taiga said after watching the news.

"These problems started happening right after Kiritsugu died", Irisviel said it all began right after Kiritsugu died.

"Anyway I'll be going now", Shiro said preparing to leave.

"Be careful when your out there Shiro dear", Irisviel is his mother so of course she would worry about him.

"I will mom", Shiro grabs his bike keys and helmet then leaves the house.

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Outside

After Shiro got to his bike he started hearing an odd noise, Shiro covers his ears for a moment until the noise settles. Shiro turns around and sees a red Japanese Dragon on the window's reflective surface, it then emerge from it and flies toward him but Shiro shields himself and the Japanese Dragon never touched him because a energy shield that just appeared, plus the Advent Deck is glowing from his pocket and the Japanese Dragon is gone with nowhere to be seen or found.

"Just what was that Dragon?" Shiro asked himself while he brings his bike outside the entrance of his home.

"Hi Shiro!" School girl Ayaka Sajyou says hi to him after walking pass him.

Suddenly from a window's reflective surface another one of those Gelnevts Minions emerge and follows Ayaka in the attempt to kidnapped her. For some reason Shiro can see them perfectly but Ayaka can't and she doesn't seem to notice them from behind her. Shiro goes after them as they walk into an alley way.

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Alleys

"Stop!" Shiro gets their attention.

"What?" Ayaka turns to Shiro but not noticing the Gelnevts.

"Get away from here!"

"Okay?" Ayaka has no idea what he's talking about.

"Come on Ayaka!" Shiro grabs Ayaka by the hand and runs, then the Gelnevts gives them a chase.

Eventually the Gelnevts corners them and Shiro's starts fighting them while Ayaka watches with no clue what he's doing. Ayaka then bumps into someone which she couldn't see but that someone was a Gelnevts, it grabs her and drags into the mirror while she was crying to Shiro for help but too late the Gelnevts already dragged her in and the rest leaves much to Shiro dismay on unable to save Ayaka from being kidnapped.

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Ayaka looks at her surroundings after being pulled into the mirror, where she is actually is known as Ventara. Ayaka panics after seeing the Gelnevts holding her but thankfully Len who was Kamen Rider Wing Knight was able to rescue her and bring her home to Earth.

"Ayaka your safe", Shiro embraces her making her blush in embarrassment because she never experiences being hugged by a boy before other than her family.

"The romance have to wait for now", Len gets their attention but confronts Shiro a rude manner.

"Shiro Emiya where did get that Advent Deck?" Len asked Shiro where did he get that Advent Deck.

"You mean this Advent Deck, I found it in my room", Shiro answer him but doesn't bother to ask how Len knew his name.

"Give it to me Shiro", Len demanded that Shiro hands it over to him.

"Not a chance whoever you are!"

"My name is Len, Shiro Emiya", he reveal his name is Len.

End

Yeah I've seen Kamen Rider Dragon Knight but not all the episodes, I only choose the ones I like to watch. The Kamen Riders who will be in this Fanfic is Dragon Knight, Incisor, Wing Knight, Torque, Strike, Onyx and Siren plus Master Eubulon because there the only ones I know, lastly enemies here is Xaviax and his mirror monsters but not all of the mirror monsters.

For Fate characters Ayaka is from Fate/Prototype, Irisviel Von Einzbern from Fate/Zero and she's still alive in this Fanfic and so is Aoi Tohsaka who was Rin's mother. Shiro Emiya will become Kamen Rider Dragon Knight and Onyx probably.

For Shiro's servant I won't be choosing Saber/Arturia Pendragon, his servant I choose is the Knight of Treachery from Fate/Apocrypha, if any of you seen that series than your familiar with her.