Author's Notes:

Hey everyone! Hope you all are resting well; Now I was busy at writing the first chapter of my new series. So now that it's time to get back to the FGO and Kamen Rider crossover. In the last chapter, our heroes encounter Elisabeth Bathory much to the shock and embarrassment of most of the heroes.

Now then, in this chapter, the heroes are now going to clash with Fergus Mac Roich and meet a strange version of Nero Claudius.

Disclaimers: I don't own any of the characters that have appeared in this Fanfiction, they belong to their respective creators: Kinoko Nasu, Takashi Takeuchi, Shotaro Ishinomori, and Toei Company.

Quartzer 9

1783: The Bride of Roses

3rd POV

In the middle of the desert, United States, North America

1783 AD

We open the scene to the heroes walking out of a forest, with Mash asking, "We have emerged from the forest. Robin, is that the town you told us about?"

"Yeah, it feels like there's something more…" Ryotaro inquired.

"Yeah, that's right." Robin answered, he then senses something, "...Hmm? Somebody's here."

"Wha—What is it? Is it an ally?" Hiiro asked. They then saw a man coming towards them.

"Yes, that's an ally." Geronimo confirmed.

The man then move towards Geronimo, "Geronimo. I have news." He then whispered to Geronimo about what they had learned.

"Hmm... I see. I'm sorry, but please continue your investigation."

Billy then approaches Geronimo, "Who were those guys?"

"They've been tracking the Celtic soldiers for me. In particular, I want to know where they're coming from." Geronimo answered the cowboy, "...Once we get that Saber on our side, we can pursue the matter further."

"Ugh, I don't want to do this..."

Meanwhile, on the other side of town, United States of America

1793 AD

Meanwhile, we saw a young girl that resembled Nero only in a bride's dress. She then started saying, " Hum, hum, hum, hum ...Okay then, the groundwork is in place. It's a shame that a Western is the only thing you can shoot in a town like this– But not to worry. Even in a Western, my extraordinary acting talent will no doubt win me an Academy Award!" She then starts thinking about what to do, "I'll be concurrently responsible for production, direction, the script, music, and the leading role..."

However, she realized something, "Oh, no! I just realized there's no cameraman–! Hmph, what am I to do... Perhaps the time has finally come for me to try my hand at summoning? But my profound talent may result in summoning a big shot... I'll be forced to choose between Eastwood and Scott..."

Suddenly, Fergus appeared saying, "Hmm. Hollywood, is it? One must not underestimate the creative minds of Servants."

"Hmph, who are you? I'm quite busy, so off with you... Unless you're a cameraman."

Fergus chuckled as if he finds her question amusing, "Do excuse me. My name is Fergus. I once earned my keep as a Knight of the Red Branch. Normally, I would have happily called myself a cameraman in order to hit on you–but things are complicated now."

"Oh?" The woman said.

"So I'm going to kill you. Period. If you want someone to resent, you have only me. I'm doing this entirely for myself, after all. I'll cut you down just because I want to."

The woman smiled as she declared, "Hmph. You seem to have your reasons, but I won't ask. You're quite bold to think you can kill me. I don't mean to boast, but I, Nero Claudius, am not a petty Servant who will die so easily, you see?"

This statement piqued Fergus' interest, "...Nero, the tyrant of ancient Rome! What an unusual Servant to run into. No wonder your radiance is different from that mediocre rabble. Such a swelling. A swelling similar to a waterfall."

"Mediocre...rabble?" Nero narrowed her eyes.

Fergus grinned, "Indeed. On my way here, I cut down three other Servants. So you'll be my fourth victim."

"Oh. Very impressive." Nero remarked complimenting Fergus, "But unfortunately, O mighty Fergus mac Róich, you're quite mistaken. The fourth victim...will be YOU!"

Fergus smiled at this, "–I see. So I guess you aren't just an emperor that orders people about from your throne. How delightful. I guess there was no need to bring them... Very well then. I'm Fergus, of the Saber class. I'll face you as one of the queen's knights."

However, strangely Nero smirked, "You know, what you're most mistaken about is your destiny. You are truly unlucky."

This caused Fergus to be shocked, "...What?"

Nero then shouted, "–You're here, right? Faceless King!" Suddenly an arrow approaches Fergus which then hit him.

"...Ugh!" He then pulls out the arrow and shouted, "...Who's there?"

"Yeah, yeah. I'll just come on out now." Robin said, as he and the other heroes appeared, "Hey there, little emperor. I'm impressed you knew I was here."

Nero giggled, "Call it my sixth sense. I'm quite attuned to the presence of spectators."

"Man, same old Nero…" Momotaros muttered.

"Nero!?" Mash exclaimed.

Nero looks at the Kamen Riders and Chaldeans, "Hmm, that voice... I feel like I have heard it somewhere before..."

"Oh, that's right... You were still alive, back in Rome." She then stepped forward and bowed, "Ahem. Your Majesty, Nero Claudius. I am Mash Kyrielight. And this is our allies. Please accept our humble assistance."

"Yeah, we owe you for your help in Rome!" Sougo agreed.

Ritsuka agreed, "Grant us the glory of fighting by your side one more time!"

"Oh? So we have met somewhere before. You have earned my trust. Anyway, both of you are my type! What beautiful faces! You may have the honor of standing beside me! Pleased to meet you, strangers from my past!" Nero smiled.

"...Hehe. Master. Tokiwa-san. Nero is just the same, isn't she?"

"Hmm. I suppose it is reckless to take on so many." Fergus said.

"It would save us a lot of trouble if you would just surrender." Robin smiled.

However Fergus replied, "–Surely, you jest. I also shall borrow the power of my queen! Come out, brave soldiers!" At this call multiple Celtic soldier appeared alongside him.

This surprises the heroes with Robin grunting, "Tch, so they were hiding."

"One against seven is a bit tough, but a hundred against seven should be more even."

Robin sighed, "Got it. Well then– Guess it's time to perform my role as an ally of justice!"

(Cue Opening Theme: Over Quartzer by Shuta Sueyoshi Ft ISSA)

Another Adventure begins with Zi-O and Ritsuka going to the wild west, as they discover something strange in the history of America.

Oh, yeah, Oh...

We saw Mash, Ritsuka, Roman, Da Vinci look and marveled at the Rider kicking Kamen Riders, when suddenly they saw Zi-O, Den O, Ghost, Build, Wizard and Decade walking as their faces are now shown.

sshun de tsukamitoru no sa Are you ready? (Are you lazy?)

We saw Sougo, Ryotaro and Ritsuka look at the clocks as they reach it, they then swing their arms the background starts rotating.

Atarashī rekishi wa soko ni Feel it! Feel it! (Crazy baby!)

We then saw Geiz throws his cloak as he transforms to Kamen Rider Geiz.

Feel it! Feel it! (Crazy baby!)

With Tsukuyomi and Mash walking as Tsukuyomi changes to Kamen Rider Tsukuyomi.

Hikari wo kate ni kasokushite

We then cut to Sougo and Tsukasa who then transform to Oma Zi-O and Decade Violent Emotions as their eyes turn red and slanted.

Konomama Shout it out! Shout it out!

We then saw Takeru appear with Makoto, Alain as well as the Heroes of history. With Roman, Sento, Haruto and Da Vinci at mission control

Ima wo susume yō

We then saw Woz turning his book as it shows a shadowy figure with white hair and black eyes.

Madō hi mo Ikudo tonaku Asu no tobira

We then saw the Shadowy figure as he walks, as an image shows the Heroes doing their daily routine. As we cut to Woz's book showing Oma Zi-O destroying things as well as the Shadowy figure sending creating golden cups.

tatake

As it changes to a white version of Woz. As we saw the Ridewatches.

Mitsumeta sono saki ni

We then saw the statues of the Riders appearing as Geiz activates his Ridewatch.

Tobikonde mitara

As the statues continue to appear, as Sougo activates his watch with Ritsuka, Tsukasa, Takeru and Ryotaro watching him.

Believe Yourself!

Sougo, Tsukasa, Ryotaro and Takeru transforms into their Rider Forms.

Toki no ame Surinukete Tomo ni

We then saw the Riders riding their backs, as Shadowy figures started walking. As the Rider kicks started moving.

You, Over "Quartzer"

We then saw Zi-O riding through the blaze. As it cuts to Sougo then entered an infirmary where he saw Nightingale trying to amputate Ritsuka with Emu Hiiro and the others trying to stop her

Mirai wo koe yō

We then saw heroes standing with serious looks on their eyes. With Artoria Pendragon splitting into her three aspects. As two armies faced off in a desert. One led by Edison and the other led by Cu Alter

Kako no ishi wa Uso de wa azamuke nai

We then saw the Riders as well as the Servants fighting some enemies. With Woz using his Kamen Rider Ginga Miridewatch.

Kanjiro sō Nexus Future

We then saw Tsukuyomi and Mash walking down the stairs, as the scenery started changing. With Natsumi, Medusa and Kaitou appearing to take their hands.

Now, Over "Quartzer"

We then saw Zi-O using his sword.

Mabayui sekai Misete

As it switches to Geiz with them duking it out as the title appears.

Sougo POV

Inside the town, United States North America

1783 AD

They then started to fight the soldiers, with them making quick work of the soldiers, with Zi-O and Ex-Aid beating the crap out of Fergus, "Ugh!"

"That's checkmate, General Muscles." Robin smirked.

Fergus giggled as if he finds that hilarious, "General... Hah, general, you say? Sorry, but I'm no general. I only wished to become her equal in the world this time..."

"So, you're just a pawn eh…" Snipe said.

Rama then went forward asking, "W-Wait, Fergus! Do you know of my bride, Sita? The wife of a man named Rama, by the name of Sita!"

This caused Fergus to narrow his eyes, "Your bride? I don't know if she was your bride, but I've seen a young woman of similar appearance to you."

"Where!?" Rama shouted.

"...Hmph, very well. That was the one thing I found unpleasant in the queen's strategy, after all. Return to the West, Rama. To Alcatraz Island. Your bride may be there." Fergus smiled.

"Did you say... Alcatraz Island?"

"You kidding me?" EMIYA muttered.

"Wait, the famous prison island, said to be impossible to escape!?" Romani exclaimed.

"It's your choice whether to trust me or not." Fergus said.

Rama however replied, "No... I will. I'll believe you, Fergus Mac Róich. I'll head to Alcatraz Island."

Fergus sighed at this, "Heroes of India gaze at other people with such pure, beautiful eyes... Still, good grief– "

"Hm?" Nero said in thought as the others also did.

"There are so many splendid women here besides the queen. What a waste, to die at a time like this... Ahahaha!" Fergus laughed as he disappeared.

Nero sighed, "...A Celtic warrior who can admire beauty? That man Fergus had such fine taste!"

Hearing this, Robin looks at her as he whispered, "No, I think it's just that he doesn't have any standards at all..."

Nero then asks him, "Hm? Did you say something?"

"Oh, nothing. Anyway, what are you doing in an abandoned city like this, Your Majesty?" Robin asked.

"You can't tell? ...Well, I suppose I can't blame you." Nero said.

Elisabeth smiled, "Hehehe, I know. I've got it! This is a plan only a woman with an appreciation for art and beauty could come up with! We meet again, Saber! It must be fate that we were both summoned to America. I can hear Mount János whispering to settle things here. To see who has the greater talent!"

This caused Nero to giggle, "Oh? ...I thought I sensed something tingling. It must have been you, the devilish singing diva, Elisabeth! Hehehe. Things must be made clear to you, above all others. Listen well. In fact, everyone should listen... To my grand plan which is as profound as the deepest abyss!"

"...I've already got an idea. Well, go right ahead, Your Majesty." Robin smiled.

Nero smiled, "Very well, I shall! Here, I plan to build the city of ultimate fantasy, namely... Hollywood! That world-renowned palace of amusement!"

This caused Ritsuka and the Kamen Riders to shout, "Whaaaaaat!?"

"Yes, such a pleasant reaction, thank you! I see you're a top-class Master!" Nero smiled at them.

Elisabeth grunted, "Ugh... To think you've taken one of the two greatest locations in America... Though admittedly I've already taken the other one... I knew it, Saber... You and I are tied by bonds of true friendship!"

"We're rivals! And friends who appreciate the same art!" Nero declared.

"...It's just like we expected, Senpai." Mash sighed.

Robin chuckled at this, "Heroes are amusing, aren't they, Geronimo?"

"I feel like I understand why the Roman Empire collapsed now." Geronimo muttered.

"Treating someone's aesthetic sense is outside of my field."

Nero then turns towards Mash, "Do you intend to help me with my plan? I could even promote you to sub-heroine, Mash!"

"Thank you very much. It's an honor to be the sub-heroine. ...However, Nero. Or should I say, Your Majesty. There's just one problem with your plan." Mash said.

"Hm? What on earth could be the flaw in my perfect plan?" Nero asks the Shield Maiden.

"This nation is currently in the middle of a war due to these Celtic warriors. As it is now, you won't find any cameramen –or even an audience!" Mash answered.

"So true pinky…" Den-O agreed.

"What!?"

"Yup. I know that all too well. I knew that all along!"

"N-No wonder a single person hasn't appeared to listen to my rehearsals! There's a saying in the Orient: "Amusement is only amusing when you have a livelihood." ...Well, it might have been a little different... But close enough. Very well! In that case, I must make a stand as well! To build a golden city of movies in this land! Elisabeth, our showdown is on hold. For now, we need to mop up the Celtic warriors in this country!" Nero proposes to Elisabeth.

"Yes, I'd expect no less from my rival! I won't lose! Leave the ticket sales to me! I'll force it on them after they're defeated!"

"What a beautiful friendship."

"More like annoying…" Snipe muttered.

"Yeah, beautiful... As long as we don't get wrapped up in it." Robin sighed.

"Anyway, this means Saber's our ally now. We even took down Fergus as a bonus. Let's consider this to be a good omen." Geronimo said.

Mash then interjected, "Excuse me, there's a transmission from the Doctor. Yes, Doctor? "

"Sorry for interrupting your fun. If you head a little west from your location, you'll find a point with a strong Leyline. I'd like you to establish a circle and set up a summoning point as usual."

"Yes, as usual, like the Doc said…" Sento said.

"Understood. Everyone, I'm sorry, but there's a place we'd like to go." Mash told the others.

However, Nightingale said, "But the patient..."

However, Romani said, "Ah, don't worry about that. Once the summoning point is established, we can supply healing spells. Using that, you can hold out for a while. Securing camp is vital, for Rama's sake as well."

Author's Notes:

And that's that for now see you guys!