Toa Solaric: This is an idea I have for Kamen Rider Hibiki and Fate Stay/Night! Be easy since this is just an idea before I could and also please let me know if there are any improvements I can take before turning it into a full story.


Hibiki idea: Song of Fate!

Shirou Hidaka was walking late home after his second day in Homura high school. The school wasn't bad but he is more concerned about the Holy Grail war happened in night time.

"Rider, do you sense any servants?" Shirou asked mentally to his partner who is in spirit form.

"I'm afraid not." Rider said.

But it wasn't before long that they heard a scream as Shirou run toward the danger. He notices spider creature with slender build and a black shell. He had sharp claws with spider legs dangling from his hips and shoulders. His head looked like that of a spider with several eyes and mandibles. But shocked Shirou was seeing Ayako Mitsuduri; a student from his school was caught in a web.

"Makamou!" Shirou exclaimed at the sight.

The Spider Makamou turned his attention away from unconscious Ayako and look at Shirou.

"Hmm… you look tasty." The Spider Makamou said.

Before the Spider Makamou can attack Shirou, Rider emerged and slashed at him but the Makamou dodged her attack.

"This is a surprise." The Makamou joked as he made a large claw grow from his wrist to block her continuation attack. There weapons clashed making sparks fly.

Shirou take the chance and rushed to Ayako's side.

"Mitsuduri-san! Wake up!" Shirou said.

The brunette girl slowly stirred and sees Shirou's face.

"Shirou-san…"

"No one take my meal and get away from it!" The Makamou snapped his fingers. Suddenly the binds around Ayako dragged to the Spider Makamou when he opens his mouth. However, her fate was safe when Rider managed to slice the webs and got Ayako from the Makamou.

"I got her, Shirou" Rider assured her master as she caught Ayami from the Makamou.

"I will take over from here." Shirou said.

"What can you-" Shirou took out an upside down tuning fork with an Oni face in the base.

"That's-!" The Spider Makamou exclaimed.

Shirou turned the metal part upwards making it a proper tuning fork. He tapped it on his wrist and it began to give off visible sound waves. He placed it against his forehead and when he did, the face from the tuning fork appeared on his forehead. The sound waves from the face spread throughout his body before it got caught in a violet flame. Soon he swung his arm out dispersing the flames. When he did it revealed a new figure.

He appeared to be wearing a kind of purple bodysuit, red gloves and boots, silver straps covering his chest, a belt around his waist, and what looked like a purple helmet with purple opaque visor lined with a red markings, silver horns, and the same Oni face decorating the forehead. This was Kamen Rider Hibiki.

Hibiki was a little taller and proceeded to walk towards the Spider Makamou.

"O-Oni…" The Spider Makamou said.

Rider remained quiet.

"Shirou?" Ayako asked. Hibiki turned around and faced her.

"It's Hibiki in this form. Don't worry, I will finish this soon." Hibiki answered before getting his Ongekibou Rekka out before charging. The Spider Makamou attempted to fire his webbing but Hibiki dodged it before continuing his charge. Hibiki then smashed his drumsticks into the Makamou's face. The fire from it made him stumble back. Soon Hibiki's Rekka was charging with fire.

"Kiboujustu Rekkadan!" Hibiki announced before firing fireballs at the Spider Makamou. The Makamou was hit and the fireballs seemed to have done a lot of damage. The Spider Makamou attempted to charge despite being on fire.

Hibiki dodged his charge and started to beat it in the face with his Rekka. To the Spider Makamou each hit was worth a lot of damage. Hibiki kept this up until the Makamou looked weakened.

"Impossible! How a mere Oni could is this good?!" The Spider Makamou asked as it was trying to get up.

"It's simple. I had a good teacher." Hibiki plainly answered. Hibiki got out his belt buckle and placed it on the Makamou's chest. When he did, the buckle began to grow in size until it was as big as a drum.

"Ongeki Da: Kaen Renda no Kata (Sound Attack Stroke: the Flame Barrage Style)!" Hibiki soon started to beat on it, each hit sending a purple pulse.

Hibiki started beating faster and the Makamou was now immobile. Soon Hibiki used both Rekka for one last beat. When he did the Makamou exploded leaving an unconscious student. Hibiki looked behind and saw Rider smiled and Ayako speechless.

A bright light engulfed Hibiki and when it faded all that was left was Shirou, with the armor but without his helmet. Ayako stepped up to him.

"Mitsuduri-san, it's nice to see you again." Shirou began when Ayako stares at him.

Is this a dream? Ayako thought.

Ayako shook her head, returning to reality. This wasn't a dream.

"So Shirou-san? So what is going on? Who are you exactly?" Ayako began but Shirou stopped her.

"I'll explain everything soon, ok?"

"Deal, only if you escort me home." Ayako said.


(Elsewhere)

A white haired knight watched the whole thing and he wasn't amused.

"How could this be…?" Archer wondered. Before ponder on what action he was going to take when he felt the call of his master.

I will end his existence before he comes too powerful… Archer swore to himself.


AN: Before you ask… This is inspired by 'what if Shirou had been raised by someone other than Kiritsugu Emiya' idea. I'm still kinks on the plot of the fic before publishing it but let me know what you think in reviews or private messages.