Chapter 1 The new Multi-King

I don't own Kamen Rider OOO or Koihime Musō

In Tokyo there were two brothers one being a young man 18 years old while the other is a 13 year old, the older one is called Kazuma while the younger one is Shoto they are the Kushida siblings, they both have brown hair and brown eyes with Kazuma being longer while Shoto is shorter, Kazuma is wearing black jacket with one of the sleeves being red, a white shirt and red pants, while Shoto has a brown jacket and jeans, they were both fans of Kamen Rider with their favorite show being OOO, they had the entire OOO merchandise with the core medals including the black core medals too along with the extra ones like panda and kangoroo medals, they had the Memory memory since it came with the black core medals, they had three canisters like the one from OOO filled with cell medals because Shoto was crazy to buy a lot of them in lots, they had the drivers which includes OOO, Poseidon and two birth drivers, they had all the weapons from the show and all the figures and bikes for them.

"This is so cool big bro we got everything we wanted."Shoto said.

"Yeah but you had to go buy a bunch of cell medals from different types of sets because you wanted different versions of them now we have three of those things full because of you."Kazuma said.

"Hey I just wanted a complete set."Shoto said with a pout.

"Yeah yeah, now we need to check if we really have it all."Kazuma said.

"Alright."Shoto said and they went to check it."hey brother do you ever wish that we could become Kamen Riders like you could be OOO."

"Well sometimes, but as long as I'm with you I'm happy."Kazuma said ruffling Shoto's hair.

Then a flash of light appeared blinding them and their stuff got covered by the light and they glowed too, when they opened their eyes they were in some kinda deserted place, they looked down to see a bag along with the canisters and they opened the bag to reveal their rider stuff.

Kazuma picked up the OOO driver and felt it being real.

"It's real, they're all real."Kazuma said.

"Wow that's so cool, but why are we here?"Shoto asked.

Kazuma saw a note and takes it out, he then reads it and said:"well looks like I'm the new OOO, while your Birth."

"Wait really?"Shoto said surprised.

"Yes, were now in ancient China like it says on the note, normaly I would question it but we are now in some strange place and not in our room so I'll keep a open mind."Kazuma said.

"Well at least we are Kamen Riders."Shoto said.

"Yeas that is the positive about this whole thing."Kazuma said.

"So in what time are we in exactly?"Shoto asked.

"The three Kingdoms era."Kazuma said.

"Really, well we better go find somewhere to stay."Shoto said.

"Yes."Kazuma said and he takes the bag and one of the canisters."you take the other two."then he walks foward.

"What, but they're heavy."Shoto said.

"I don't care you bought those medals so your carrying them."Kazuma said.

"Fine."Shoto said and then he tries to drag the canisters.

While walking Shoto then looked to the side and said:"hey look."Kazuma stops and sees two ridevendors.

"Okay those must be ours."Kazuma said.

They then went to them and they put two cell medals inside them and pressed a button to change them to bike mode, they put their stuff on them and then they ride towards the next town.

They then arrived at a town and put they're bikes at the entrance to not cause a scene, they entered it he saw the people were scared as the man were hidding the women and children inside.

Kazuma goes to talk to a elder that was sitting on a bench and asked:"sir why is everyone scared?"

"A army of bandits are coming to attack our town, we were warned by one of our merchants that he saw them planning to attack, we are trying to protect the women and children but were afraid that they will just take them away."The elder said sad that they can't do anything.

"What about the magistrate?"Kazuma asked since he knew chinese culture.

"He ran away and took all his guards with him and left us to the wolves."the elder said.

Kazuma was mad as that coward ran away from his duties, he then saw a man approaching them and said:"sir they are coming."

Kazuma and Shoto run to the other side and saw a army of bandits arriving, Kazuma frowned and said:"I will not allow them to take this village."

"But can we even take them?"Shoto asked.

"Of course, were now Kamen Riders and we must protect the innocent."Kazuma said and Shoto nodded."but let me deal with this and make sure none of them get to the village."

"Okay."Shoto said.

Kazuma takes out the OOO driver and then takes the medal holder taking out the Taka, Tora and Batta medals, he then puts the driver on his waist and puts the medals too, then he takes the scanner and scans each of the medals."Henshin."

TAKA, TORA, BATTA TA-TO-BA! TATOBA, TA-TO-BA!

Each of the medals appeared in front of him, they made the symbol and attached to his chest transforming him into Kamen Rider OOO, the bandits stopped and everyone from the city was amazed at seeing OOO, OOO then cracks his neck and got ready to fight.

"It doesn't matter boys we'll just kill him and takes his suit."the bandit leader said.

"I don't think so."OOO said and he then takes out the medajalibura.

OOO then jumps at them using the batta legs and stomps the ones in the middle to the ground, he then starts fighting them one by one, some tried to attack him but he blocked their weapons with his and those shattered upon contact with his sword, OOO then put his sword away and used the Tora claws to slash at them, OOO then saw a small group that was scared but still wanted to fight so he took out the scanner and scanned the medals again.

SCANNING CHARGE!

OOO legs then charges and they turned into grashopper legs and he used them to jump into the sky, then three rings of red, yellow and green appear in front of him and he went through each one in a kicking position with red wings coming out of his back and he then ride kicked the bandint making a huge explosion.

OOO was on the ground thinking what he did, he just took a life and looks at his hands, he knew at this time he would have to do so but this early, then Shoto came to his side and grabbed his arm making OOO look at him.

"You didn't have a choice, but your still a hero and your my brother no matter what."Shoto said.

"Shoto."OOO said.

Then they heard cheering and look at the villagers cheering for them, then the elder goes up to the brothers.

"Thank you so much for saving us, we must know are you the messanger of heaven the one sent to bring peace to this world."Elder said.

They think about it, they didn't want to say it but in a way they were sent here by some kind of entity to be kamen riders, so OOO said:"yes, I am OOO and this is my little brother Birth."Shoto looks at him confused.

"All hail lord OOO and lord Birth."A man said and they cheered for them again.

"Lord OOO we would like you to be the magistrate, with you looking after us we can truly be safe."Elder offered.

OOO looks at Shoto who then nodded and he said:"I accept, I will make sure this place is safe along with the land as I continue to expand and bring piece to end all the conflict."

Everyone cheered again since they now have a leader they can look up to, after that OOO took the place where the old magistrate lived, he did some changes and started to make sure the city would be safe from getting more soldiers for the future, the old Magistrate tried to get back his position but was then kicked out by OOO and entire towns people.

On a secret base where Saji and Ukitsu are now talking to each other about something that happened.

"Something is wrong, I heard that someone called OOO is taking a spot as Magistrate."Saji said.

"Don't worry we will just have to be prepare against this threat."Ukitsu said.

"Actually you won't be needed."they heard a voice and then a rift opened and from it came three monsters being the Shocker Greeed but he was black along with Gel-Shocker Greeed and Destron Greeed, then from behind them came a hooded figre wearing a red robe with the Symbol a shocker on him.

"Who are you?"Saji questioned him.

"You don't have the right to know my name since you won't be alive."the stranger said.

"Oh really."Saji said and he tries to charge him but then Shocker Greeed appeared in front of him and stabs him in the chest with his arm."what but this is not possible I shouldn't die, I never die."

"Too bad."Stranger said then the Shocker Greeed throws him up and the stranger shoots a blast that vaporized Saji.

They look at Ukitsu who got scared and tried to trun but the Gel-shocker sent one of its arms at him bitting his head off and his body fell to the ground.

"Good."stranger said and he makes a throne appear for him to sit on it."now I need to take care of the new OOO but I just need to make a better army for the glory of Shocker."

"Shocker."said the three Greeeds.

"I wonder if the leader will send any more greeed well until then I will just have to rule this entire world then the other riders will perish along with OOO."Stranger said.

Kazuma was in a office doing some papperwork then he felt a bad feeling, he goes to tha window and look through it.

"Why do I feeling theres danger coming soon in the future, well I just need to prepare until then."Kazuma said.

Note:OOO has appeared in the Koihime Musou world and this time we have rider villains being the S.I.C villains Shocker Greeeds, yes shocker is the main villain of this story since they are the true villains of the riders since they started everything from the beginning and Shoto was made to be paired up with the younger girls like Rinrin since it wouldn't be right for Kazuma to be with them.