So this the first fanfic I ever made, the reason why I made this fanfic because I can't hold the ending of Kuroinu, it's so bad, I feel like they need someone to help them, so I thought what if I bring Tokiwa Sougo from Kamen Rider Zi-O to the Kuroinu Universe

Disclaimer: I don't own Kamen Rider Zi-O and Kuroinu

Major Spoiler for Kamen Rider Zi-O Episode 49

In the final battle between Sougo and Another Decade, with Sougo defeated by Another Decade a.k.a Swartz, while Swartz start to finish Sougo then Geiz come to save Sougo but his powers are overwhelming Geiz, Geiz returned to his civilian's form and started grunting, and Sougo approaching Geiz

Sougo: Geiz! Geiz! Please hold on

Geiz: Zi-O... (start to grab Sougo)

Geiz: Be the Ohma (Demon King) Zi-O... Be the conqueror of time

Sougo: But...

Geiz: You have everything to be the greatest Demon King

Sougo shakes his head

Sougo: Geiz! Don't die!

Geiz: I feel very happy because I come to this era

Geiz: Sougo...

Geiz: I'm very grateful to be your partner... even as your friend

Sougo: No!

And Geiz started to lose his grip and close his eyes

Sougo shout: Geiz! Geiz!

Then he feels very sad because their own partner died and he looked at his enemies, suddenly his Jikuu Driver changes to Ohma Zi-O driver.

He walks into the smoke and he's looking at Another Decade then He's started to Shouting with his anger because Swartz killed one of his best friends,

Sougo: HENSHIN!

as he started pushing the driver

Shukufuku no Toki

Saikou! Saizen! Saidai! Saikyou-ou

Ohma Zi-O!

As He transformed into Ohma Zi-O, a man with black clothes with a black scarf holding a book named Woz started to approach him

Woz: Waga Mao (My overlord)

Sougo: Woz... Iwae (Rejoice)

Woz: ha?

Sougo: as I said Iwae (Rejoice)

Woz: Rejoice... The conqueror of Time that controls Time and space also The Past and The Future

Woz: He's called Ohma Zi-O! At this time we're on the last page of the history

Another Decade started to laugh so hard at him

Another Decade: I've been waiting for this for a while, I will corner Tokiwa Sougo for this, as for now, I will take the power of Ohma Zi-O!

And he's starting to take the power of Ohma Zi-O

Another Decade: Such an impressive power. With this power, I surely have passed my sister power

Another Decade: Now I shall take my throne by myself

As soon he's taking the Ohma Zi-O power, He's started exploding because the power of Ohma Zi-O is too powerful

Sougo: You think someone like you can take my power?

The Riderwatches appear around Ohma Zi-O

Sougo: My power is the power of all Riders!

And The Riderwatches is coming closer to Ohma Zi-O making a small shockwave, then Another Decade grunt's started attacked the Ohma Zi-O

As one of his grunts start getting closer to Ohma Zi-O, Zi-O started to punch him as he exploded and follow by another grunt (Kamen Rider Evolt), as he looked backward and see the Flying mirror monster started approaching him, and he strikes them with his ability, and he looked back to Daguva as Another Decade grunt's, He kicks him and leaving the Kuuga symbol on his chest, then He's punched the Ryuga Dragreder, he's charged with the fire sphere to Gamedeus (also one of Another Decade Ground) and makes his flies to the building, then He's finishing the last of Another Decade Grunt's

Another Decade: What amazing power

Sougo: You really underestimated the history of the Riders...

Another Decade: But I already have half of your power!
I will come back to my world and conquer the world as a king.

As he started to summon the dimension wall, suddenly he's stabbed right in his stomach by Tsukuyomi as Kamen Rider Tsukuyomi

Sougo caught surprised

Tsukuyomi: No one needs a King like you!

Another Decade: You Bastard, from the start you already find my blind spots!

and Another Decade turned back to Tsukuyomi as He punches Tsukuyomi with his power that makes Tsukuyomi died because of him

"TSUKUYOMI!" Sougo shouted

As he looked into his friend died in front of his face not one but two precious friends, he's pissed off as he starts making his Final attack by pushing the driver once again

SHUEN NO TOKI

And he's floating towards the sky as he's power surrounding him, Another Decade start to use his Final move against the Demon King Zi-O, then Zi-O start to Rider Kick his enemies

OHMA ZI-O HISSATSU GEKI!

Another Decade start to punch him but Ohma Zi-O overpowered the Another Decade as he kicks the Another Decade and suddenly the time frozen as they showed Swartz feeling the pain and Tsukuyomi confront him

Swartz: Argh!

Tsukuyomi: This world is already my world! My brother

Swartz: My sister...! Your words...

she looks at Sougo kicking the Another Decade

Tsukuyomi: Sougo... Now the two worlds are in your hands

and she's started glowing and the two worlds combined into one world, after that Tsukuyomi and Swartz started to disappear and the times continue to normal as Another Decade exploded that cause a massive shockwave that makes their monster in this world started to disappear as well

and Sougo stood up he's turned into Woz approaching Sougo

Woz: Vey Impressive My lord. The world has been saved *and he's closed his books and kneel to his lord

Woz: Once again I give my loyalty to you.

Woz: You are the conqueror from this world... For now and forever.

Sougo shakes his head

Sougo: That's can't happen

Woz loot at his lord by confuses

Woz: Why? Even though you have become very strong.

Sougo: Because I will destroy this timeline

Woz: eh?

A voice comes to the young Sougo

"So you have chosen this way"

And suddenly bright light comes from him and showed Sougo and the older Sougo from 2068 sitting on his throne

"You have your will to conquer as a king" Older Sougo said to the Young Sougo

"You have saved the world"

Sougo: That's not me... The one who saved it is... Geiz... And Tsukuyomi... As well as the strength of the riders.

And the flashback of he and his friends have through

Sougo: I don't want to live in this world ...where I will be the king but none of my friends are there

"You have chosen the Glorious path compared to the military government."

Sougo: Does the power of Ohma Zi-O can be destroyed?

"Because destruction must be done before creation" as the older Sougo said

Sougo: That's right

Sougo: Then I will create something. History... I will rewrite it

"You can't be a king anymore"

Sougo: I can, I think I can do it.
After all, the flow of time can only move towards the future. Even if the time may seem backward... Time will move on...

The older Sougo chuckle at what his younger self said

"I'm very grateful that I can meet with you,... My dear young self" as the last word he said before he's disappear

Back to reality, Sougo started to reset the timeline

.

.
.

And then, it went black
He thought he would be wake up in the morning and prepare for school.

.

.
.

But...

.

.

That's not the end he ended up

He starts to open his eyes, looked around him, he's awake in the middle of a forest, he's really confused about how he ended up here, then he looks at the Riderwatches he had, not single of them disappear, unless the Ohma Zi-O Power, which makes him surprised and confused, He thought he would lose his memory about he become a Kamen Rider and Save the world, but this is weird, he's ended up in unknown worlds

He sighed "Well looks like my fate didn't want to end in vain just like that"

And so a new journey in unknown worlds begins

The first chapter is already done, This is my very first fanfic ever, I apologize if my grammar is wrong because English is not my first language, and How Sougo will survive in this cruel world than ever before he through, Let's find out in the next chapter
Have a nice day, and See you in the next chapter, Ciao

[Rewrite: 10 June 2021]