Author's Notes:

Hey everyone! I hope that you like that OVA chapter… Now then… Let's go back to the King of Time and Humanity's Last Master series… This time we're going to the Babylonia Singularity… Here Ritsuka and Sougo after the fight against the Lion King. Are now in Ancient Mesopotamia where they must team up with King Gilgamesh fight three Goddesses.

In this Prologue the heroes are now having a briefing about the current mission… As they recap the last singularities, and later going to the Singularity itself.

Now then… Let's get into the story.

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

Prologue:

2019: The next Singularity

3rd POV

On a beach in Mesopotamia

2655 BC

We then open to the scene where a young blonde man was now cradling green haired individual. As a storm rages around them… He looks up at the sky as he mutter something.

Inside the throne room of Uruk

2655 BC

We then see the same Blonde man wake up revealing red eyes, as we saw the outside of Uruk… We then saw him go outside as he looks at the stars as he said.

"So, you will arrive, Chaldea and the Kamen Riders? The lone candlelight which illuminates many a star! Then come forth! To this land where the times of the Gods and deeds of humans intersect! O Humanity's Last Master and King of Time!" He proclaimed as he stretches out his arms.

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

the 'Grand Order' continues with the Kamen Riders and Chaldea are now at the seventh Singularity. Where the first civilization arose now it's up to them to face three Goddesses.

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 OOO and Ankh are at each other's backs.

Mirai wo koe yō

We then saw heroes standing outside of a city. With Gilgamesh greeting them and Ishtar suddenly barging in. and Ana looking at Medusa with surprise. And the Artoria trio sighing at Merlin's antics.

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.

Mash POV

Chaldea Headquarters, Antarctica

Year 2019

We then cut to the Chaldea Headquarters, where we saw Mash, Tsukuyomi, Hana and Sayo running towards the control room. As they reach the door. They brush their hair; the door opens to reveal the others with Ritsuka greeting.

"Morning!"

"Oh, your awake!" Sougo said.

"So are you, Hanakuso Onna"

"You're late Sayo." Tsukasa stated.

The girls smiled with Mash saying, "Good morning Senpai, Tokiwa-san. Mash Kyrielight arriving on duty alongside Alpina Tsukuyomi, Hana and Sayo Kadoya. Although we're by late by two minutes." They then moved towards them, "We're terribly sorry."

"Yes sorry, Oniichan, everyone."

Romani and Olga smiled as the former greeted, "Good morning, Mash, Hana, Tsukuyomi and Sayo."

"My… Aren't you three happy…"

"Good Morning, Dr. Roman, everyone."

"Are you sure you're, okay?" Ritsuka asked.

"Yeah… The last Singularity must have taken a toll on you…" Woz said.

"More like emotionally…."

"Yes… I'm 100% recovered." Mash smiled.

Ritsuka and Sougo sigh in relief with the former saying, "Good that's a relief."

"Sorry to have worried you all."

"Well then, Fujimaru, Tokiwa, Mash, and everyone… Now that all of you are here, let's start the briefing." Romani stated.

"I couldn't agree more, it's time for the next mission, everyone." Olga added.

"OKAY!"

"Fou!"

They then meet at the control room with Romani started to explain, "As of 7 AM today, we at Chaldea have completed preparations for the Rayshift to the Seventh Singularity." He then projects images of the Singularity, "The last Singularity… The Seventh Grail that Solomon sent to the past himself. Our hopes for its recovery rest with you. the lost year 2020, is fast approaching no matter what the cost."

Mash continued, "We must eradicate the cause of the incineration of Humanity."

"And beat that man who calls himself Solomon…" Kouta added.

"You're right… that's the goal of the Grand Order. Orleans, Septem, Okeanos, London, American Continent, and Camelot." The last one caused the Artoria trio to be silent as they remember about Bedivere and the Lion King, "We've made all sorts of journeys and come this far. And we're about to Rayshift to one of the world's oldest Civilizations in 2600 BC, at the end of the Age of the Gods. The land of ancient Mesopotamia…"

"A world before the Christian Era…"

"And before God called Abraham to go to Canaan." Takeru added.

Suddenly the door opens up, causing them to be surprised a voice called out, "Indeed!" It is none other than Da Vinci and Sento with the former saying, "Just the process of getting there makes this tougher than any previous Singularity!"

"And pretty much the perfect ground of study for us scientists" Sento added.

"Da Vinci! Sento-san!"

"Another good reaction out of you guys. We appreciate it."

"You mean like the last time…" Banjou grumbled remembering what happened at Camelot.

"We told Banjou we're sorry about that!"

"Come on… I mean, genius is measured by how much surprise one can generate!" Da Vinci added.

"Well, you two don't have to surprise us, you know." Romani replied.

"What kind of response is that? How boring! Now I shall give you all a small lecture. Mesopotamia is a civilization that flourished between the Tigris and Euphrates rivers that flowed into the Persian Gulf. And we're headed now to the Age of the first Kings."

"They say it was at this point that the Age of the Gods came to an end."

"So then—" Sougo said

"It means that it's a time when gods and monsters still coexisted."

"You're correct, but we don't have time to worry about that."

"Really?"

"You heard him you all have restored six Singularities so far. You all should be more confident in yourself. On our honor as geniuses, we hereby that we will flawlessly prove your existence. So, don't worry about a thing! Get out there and go have a Grand Adventure!"

"And of course, you have us, right? Sento added.

"Leonardo and Kiryu's statements are inappropriate, but this really is an experience not many can have. Once we put an end to everything, tell me what you've learned on this journey."

Everyone is leaving the room with Da Vinci saying, "I have a perfect gift for you." With Mash stopping.

"Um… Dr. Roman, may I ask one question?"

A few hours later everyone is now preparing to go back in time with the participants being Ritsuka, Mash, EMIYA, Medusa, Jeanne Alter, the Artoria trio, Zi-O Riders, Decade Riders, Ghost Riders, Den-O Riders, Wizard Riders, Sayo, Akari, and Hana.

"Rayshift preparations complete, destination set to Uruk, 2600 BC."

"Unsummon program start. Commence Spiritron conversion. Ritsuka Fujimaru, Mash Kyrielight cleared all stages of Rayshift. We're ready."

"Seventh Grand Order, commencing operation!" Roman and Olga shouted.

"Let's go guys" Decade said as he and Sayo create a curtain while the Den-O Riders go outside to call the trains.

Author's Notes:

And that's that, sorry if it's short but this was during the briefing part of episode 1.