Last time, on Kamen rider Decade

(Y/N) and the other gangs has arrived to the previous world.

And meeting Ragna and his friends to defeated Weather Dopant, known as Relius Clover the father of Carl.

And using the new power of Ragna transformed him into a weapon to defeated the kaijin.

And it was the time to goodbye to Ragna and his time has time up and vanished away expects for his closet friends to remember him as the protector of the world and the future and the people.

And Relius's body was the doll.

Reincarnated to bring them back as the dead in the doll's body.

And what is the next journey of 4 friends?

Meanwhile in night

There is a young woman walking in the street alone in the middle of the night.

Until she got the phone called. She accepts the call.

Woman: Hello? Hey mum, I'm fine. I just going home by my own. Okay love you too.

She hang before she walked suddenly she didn't notices the noises coming from the bushes and watching her. Making her froze from walking before turning to the bushes where the sound.

Woman: Hello? Is someone there?

She stared at the bit before she shrugged her shoulder continue to walking again suddenly she felt something wrapped on her leg.

Causing her to be flinched slowing looked down where it is, revealing some sort of string likes spider web on her leg.

Woman: What the...?

Suddenly she was forced being pulled by the webs she tried to grab on but failed to escape being pulling and something grabbed by her neck choking.

Revealing a Spider Dopant on the Building.

Spider Dopant: Ahh, Rosa still beautiful you are.

Rosa: Wh-Who are you?!

Spider Dopant: Didn't you know? The one who broke my heart and I'm the creepy stalker.

Making her realize that and who it is.

Rosa: J-Jonathan?!

Spider Dopant: Bingo! Yeah, that's right! You see I'm going to enjoy your suffering.

Rosa: P-Please don't do this!

Spider Dopant: Too late, so goodbye my love.

He let go of her neck, making her fall down to her death and screaming suddenly someone in armor figure catch her in the air in his arms making her blush landed on the ground.

Spider Dopant: What?!

???: You alright?

Rosa: Y-Y-You the vigilante W!

W: That's right! It's Kamen Rider W.

He helps get back up on the figure making her squeal in fangirl.

W: Get out of here, I'll takes care of this.

Rosa: Alright!

She nodded her head rushes back to safety.

Spider Dopant: Rosa come back here!

He leap out of the building attempting to wrapped her in his web but being caught by the hand of W.

Spider Dopant: Eh?

The string was being by W throws the powerful punch on right arm hitting him on the face send flying on the ground in 10 feets away.

Spider Dopant getting up glaring W in anger.

Spider Dopant: Damn you! Damn you! DAMN YOU!!!

While W staring at Spider Dopant having their conversation for a bit.

Left eye W: Hey, Phillip is this guy really is ugly Jonathan in my class?

Right eye W: That's right, Big brother. You know what to do?

Left eye W: Yeah.

W doing their poses.

W: Now, count up your sins!

(Play Journey through the Decade by Gackt)

(Kamen rider Decade, he has been given the power of a destroyer. And what will he do to see if he travelled through all the world to save them?) As the song started focus on Decade, who just already transformation, standing here in a white room filled the cubes and face the camera.

(Miageru hoshi sorezore no rekishi ga kagayaite) Rachel covered (Y/N)'s eyes until she let's go. His eyes zoomed in and is soon replaced by the camera, his camera, and later his Neo Decadriver which includes the 19 including himself. His Machine Decader is shown in parked of front a pile of smoking rubble where (Y/N) sitting alone before, in the white. (Y/N) grabs one of the cubes and looked at the camera.

(Seiza no you sen de musubu shunken hajimaru legend) The scenes changes to shown the worn down warehouse with all the riders sitting out of one of time. Rachel grabbed the bottle and (Y/N) looked back. Ryuji slumps back his TryChaser200 with Boku no Hero Academia's characters and Toaru Majutsu no Index are here standing or sitting down. As the silhouttes of the riders appeared one by one. Rachel throws the same bottle down on the floor.

(Oorora {aurora} yurameku jinkuu koete. Tobimoku meisou suru Parallel world) On the side of the dark riders charge while the other of the Riders of Good did the same. The same bottle shatters as (Y/N) look as through he was about to collapse but not before his face changing into each of the Rider's helmets. Backed to the warehouse all 19 riders line up doing their signature poses and with Decade in the centre and behind him was Rachel.

(On the road dare no tobi no tonchu. Hontou no jibun jishin deau tame.) All of the 19 riders were in circle and fending off the dark riders as they surrounded by them. (Y/N) is shown on his bike getting his helmet on and Rachel was riding passenger. Rachel hold on tightly around his waist before we see Decade showing off his fighting skills especially with the Attack Ride: Slash card. And soon back to the Rider, everyone doing their best trying to watch each other's back while against Dark Riders.

(Atarashii yoake e to tsuzuku michi ni kawaru no darou) (Y/N) sits alone exhausted tearing coming out of his eyes down to his face. Until Rachel was in front of him with his camera and offering the other to help him up. We soon Ryuji ride along with (Y/N) and Rachel on their respective bikes. Back on the battle Blade was having trouble with Glaive until Decade shows up and pushed Glaive away. Ryuga was about to use his Strike Vent on Decade until Ryuki uses his first to save Decade.

(Mokugekise yo Journey through the Decade.) The riders are helping each other trying to take down their respective foe. Soon Rachel smile in Decade's mind. But Decade focuses on the battle and helping his comrade's. Decade was soon driving on his bike driving out of the Dimensional Wall with pictures of the other 18 riders in it circled the logo.

(Opening ended)

In the studio shop/house, (Y/N) woken up in the morning stretching his arms and legs for a bit excuse. Going to the kitchen where his foster grandfather is cooking breakfast for them. And Izuku returns home to his apartment didn't tell his mum and cousin about the Rider Worlds and multiverse and it'll put them danger.

So Izuku tell her mum that they home study with (Y/N) and made the new friend and Inko was fine with that and Yukari doesn't feel right about her cousin.

George: Oh! Morning (Y/N)! How are you?

(Y/N): Good gramp. Just good. Yawn

Before he spotted the note on the table.

(Y/N): What is this?

He picks up the note coming from Tsukasa.

Hey, New Decade
Heard what happened you were on the last worlds but too bad you had to unlocks all the powers of the Kamen Riders you're going to the Words of Riders and congrats on unlocking the powers of your allies.
And you're going to your next mission in 24 hours have some rest and going to school.
From Tsukasa Kadoya the Previous Decade.
And P.S You might return to your world after you accomplished your mission.

(Y/N): Just for our mission. Wait I didn't change a background. So that's mean...

He looked at the background the world of W, he looked at the outside, they're still in their worlds.

(Y/N): I see we're only have 24 hours and our next is... W.

He looking the card of W in sealed.

Ryuji, Rachel joins in breakfast for Grandpa George made.

Rachel: Thanks you, Grandpa.

Ryuji: Thank you!

(Y/N): Thanks Grump

As they eating their breakfast and they are chatting about their next mission.

Rachel: So, we're only have 24 hour before going to our mission.

(Y/N): Yeah, that's right and we need to unlock the rider cards and in order to defeated Dark Decade.

Ryuji: That's right! You're already unlocked my powers.

(Y/N): That's true but we need to prepare for ready for that.

Rachel: You're right.

They continuing eating their breakfast.

George: Oh! And by the way, I enrolled Ryuji in your school.

Making them stop eating their foods and making Ryuji looked confusion with a comically and a smiles.

(Y/N)/Rachel: What?!

In the Aldera Middle School

(Y/N) and Izuku was staring in disbelief and shocked at Ryuji is joining in their class.

Teacher: Alright, everyone. I want you to meet Ryuji Godai and he's living with Rachel's grandfather and cousin of her. I want you to treat him in nicely.

Ryuji: I'm Ryuji Godai! Nice to meet you!

He genuine smiles at the class making their hearts melting. Expects for Bakugou. You know because he's an.... asshole.

Inner class: His smiles is really is amazing...

Ryuji sit with (Y/N) and Izuku on his table desk.

Ryuji: I hope we can get along!

(Y/N): Y-Yeah, me too.

He said in weakly they already greeted before and now they greeted back.

After in class all the students bomber him in questions and get along with him but (Y/N) managed to get Ryuji safely away from the students and outside the school in the garden, where (Y/N) is focusing taking a pictures.

Izuku: So, our next mission is to W's World right?

(Y/N): Yeah, you do acknowledge about Kamen Rider, right.

Izuku: Yeah, W has two people in 1 body, they are partner in detective in crime. One on the right is the intelligent and bookworm solving the crimes in keywords and the other on the left is the detective and fighter like it to called Hardboiled detective. 

Making (Y/N) snickered about the "Hardboilded.

(Y/N): Y-You know, it's sounded so funny it says Half-boilded.

Making Izuku and Ryuji snickered too.

Izuku: Yeah.

Ryuji: You're right!

Izuku: And W using the Gaia Memory likes USB to access on their driver to grant them a powers for their forms when they different forms when they transformed into a different forms of halves. Granting them a weapons from Gaia.

(Y/N): That's right. So, Izuku any finds the information about Decade.

Made his friend shook his head.

Izuku: No, I hadn't seem like Decade didn't have his story.

(Y/N): I see... How about Kamen Rider Expo Museum?

Making his childhood friend bright up with smiles remembering about it.

Izuku: Oh yeah! I remembered it! It was our favourite place to go there and explore.

Ryuji: Wait, Kamen Rider Expo Museum?

(Y/N): That's right, you're basically new here. In our home dimension. Kamen Rider Expo Museum is basically for all the historical and objects of all old Kamen Riders and New Kamen Riders. It's basically everyone's favourite place to goes there of seeing to learning of Kamen Rider's story after the Quirk incident appears in long time ago.

Ryuji: Wow! That's amazing! I love to see that.

(Y/N): I know but this might be our la.....

???: (Y/NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN)!!!

He was interrupted by some familiar voices making their heads turns in quickly glances removing Misaka in furious filling with electrify. 

Misaka: There you are! You got to explaining with me mister!

(Y/N): Oh shit! We've got to go!

Izuku/Ryuji: Eh?! Why?!

(Y/N) turns gestures in signing.

(Y/N): Gesture Biri-Biri is not the only one our house disappeared and didn't know our mission crossing the multiverse!

Izuku: Gesture EH?! How that possible?!

(Y/N): Gesture I don't know! We've got to get....

???: PHOTOGRAPHERRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR!!!

They flinched turning to familiar face. It's Bakugou! He flying out from his explosion quirk out from his hands heading toward at (Y/N)'s direction

Bakugou: STAY THE FUCK WHERE YOU ARE!!! YOU'RE DEAD TO ME!!!

(Y/N)/Ryuji: Oh shit!

???: (Y/NNNNNNNNNNNNNNNNNNNNNNNNNN)!!!

(Y/N): Ugh! What now!

They turn their heads at Kuroka rushing at him with high-speed rushing.

Kuroka: (Y/N)! I need the pictures of Onee sama now!!!

Misaka: What?! That's it! You're dead!

Three idiots: (Y/NNNNNNNNNNNNNNNNNNNNNNN)!!! We're need some sexy girls of picture!

(Y/N): Oh come on!

Three boys slowly turns their heads at each other with fear expression.

(Y/N): Run?

Izuku/Ryuji: Run.

They nodded their heads.

(Y/N): RUN!

Three boys started to running away from those explosive boy, electricity girl, teleport girl and three idiots and (Y/N) calling for Rachel to leave the school.   

They arrived at the park where Bakahoe, Misaka, Kuroka and three idiots didn't catches them while the boys catching their air from running away.

(Y/N): Man, we're actually survive from Bakuhoe's wrath and Biri Birir's thunder strike before they're trying to killed us.

Izuku: Yeah but.... How can Misaka is not the only one knowing our house disappeared?

He asked him in curious.

(Y/N) started to explaining about Misaka, making him surprised.

Izuku: Wait! She didn't know that we're travelling to other universes.

(Y/N): Yeah, but we aren't going to tell her that our mission is....

He was interrupted by the phone sound ringing, coming from Izuku taking out his phone before accepted.

Izuku: Moshi, moshi? Ah All Might!

Making his friends surprised expression face.

Timeskip, (Y/N) and the others arrived to the beach, where.... the beach is dirty and filled with garbage making two riders with deadpanned expression and Rachel with disgusted seeing and dislikes on dirty.

Izuku: S-Sorry, taking you there.

(Y/N): No, no, no, it's fine! We're childhood friend, we're always each other, right?

He smiling at Izuku.

Izuku: Yeah, you're right! We're always help each other!

He showing his genuinely smile making his brightly shines everywhere making his friends too pure and fall by his smiles.

Inner (Y/N): T-T-That smiles.... i-i-is....

Inner Everyone: Too pure and innocent!

??? Ah hahahaha! There you are, Young Midoriya!

They gained their attention before looking at the sky, revealing All Might in his muscle form leapt up in the sky before superhero landing on the ground. Making the friends filled with excitement and joy seeing All Might in real life.

(Y/N): Amazing, it's All Might!

Rachel: It's really his him!

Ryuji: Sugoi!

All Might: Ahahahahahaha! I always appear in action everywhere I go! Why?! Because I'm he- Arghhhhhhhhhhhhhhhhh!

He turns back into his true form/skinny form making them freaked out seeing All might spitting out of the blood.

Rachel/Ryuji: Arghhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh!

Ryuji: What is that!

(Y/N): Nervous Ummm, I hate to say that.... that All Might.

Showing his comical nervously expression pointing to All Might in his skinny form before he stopped spitting out from his blood.

Ryuji: WHAT?!

Rachel: No way, you're lying!

Izuku: Nervous Umm, he's right and not lying. That is actually All Might.

With a nervous smiles.

They all at All Might transformed to his muscle form before transformed back into his skinny form before his blood drool out from his mouth before transformed back into his muscle form again.

Making them to be shocked and surprised seeing this.

Inner Rachel/Ryuji: N-No way!

All MIght: Ha ha ha ha! Sorry about this kid, I knew my true form might freaked you out.

Rachel: N-No, it's fine.

She avoid eyecontract with a disbelief looked.

Inner Rachel: I-Is this guy really All Might?

All Might: Ah! Young (L/N), it's good to see you!

(Y/N): You too, All Might.

He replies with a smiles before two man formed handshake each other.

(Y/N): Sorry, about my cold attitudes and finding out your secret but I'll promise I won't tell everyone about your true form. Your secret is safe with me.

All Might: Ah hahahahahah! It's fine (Y/N)! I'll entrust you my secret.

(Y/N): Yeah.

He smiles.

All Might noticed the people he never met before.

All Might: And who you might be young man and lady?

Rachel: Oh! Forgive my rudeness, my name is Rachel Watanabe.

Making him shocked and kept his smiles.

All Might: W-Watanabe?!

Rachel: Yes, is something wrong, All Might.

She asked in confusion at him before he laughing again.

All Might: It's nothing, young Rachel! It's just ring my head when I remembering it. But don't worried about it, all right?

Inner Everyone: O-Okay...

Making them sweat dropped on their forehead.

All Might: And who you might be, young man?

Ryuji: Oh, I'm Ryuji Godai!

(Y/N): And he is the user of Kamen Rider Kuuga.

Making him surprised hearing this.

All Might: K-Kuuga?! The first Heisei Rider?!

(Y/N): Yes, but he's not actually original Kuuga in our world you see Ryuji is the from the other world.

Ryuji: That's right! I'm might not be the original Kuuga but it's my duty as Kamen Rider to protect everyone's smiles from evil.

He showing his determination with a smiles before pumping his fist.

Causing All Might to be laughing at his statement.

All Might: I liked you boy! We're might have the same similarity that we're protect to the smiles from everyone else.

Ryuji: Really?!

His eyes filled with sparkle.

All Might: Yes!

(Y/N): Hate to interrupted but.... can we're continued our thing.

All Might: Yes!

He fake coughing before looking at him.

All Might: What you mean Young Ryuji is from the other world?

(Y/N): Well you see.....

He started to explaining about that he and the other went to travelled to the worlds, the Multiverse theory. He was given his driver by the originally user Tsukasa Kadoya aka Kamen Rider Decade, and their mission is to stopped Dark Decade from taking all over the worlds rewriting the heroes' stories. And Izuku join up for their mission and Ryuji join too they're need to stopped Dark Decade. And those people are connected to prevented (Y/N) to do his mission and might be possible as 'Dimension Police'.

All Might: Interesting, very interesting.

(Y/N): Yes, but have you ever heard of the driver and Decade.

Hoping that All Might might know.

(Y/N) showing to All Might, he grabbed examining the driver for the bit before giving it back to the young rider.

All Might: No, I hadn't.

He shooks his head.

The gang: What?!

Izuku: But, but it might be our las.....

Until (Y/N) interrupted him.

(Y/N): That's enough, Izuku.

Izuku: But....

(Y/N): Dude, I said that's enough.

Making his friend goes frown about it.

Izuku: Sorry.

(Y/N): It's all right.

He rubbed his back to console him.

Rachel: By the way, All Might. Why you transformed back into your true form?

Causing him to transformed back into his true form with a serious expression.

All Might: Very well, but you're not gonna like this.

He lifting his shirt making Rachel gasped and Ryuji started to gag before puke out the vomit going to the ocean and (Y/N) with surprised expression. Expect for Midoriya knew about this.

Seeing the large scar on the torso.

Rachel: Oh my god, what happened to you?

All Might: Pretty grossed and freaked out, right? I've got the big fight back in 5 years ago. My respiratory system has been basically destroyed, and I've lost my whole stomach. All the surgeries have been pretty much, worn me out and it can't be fixed. Right now, I'll only do hero work for about 3 hours and a day. The rest of the time, this is what I look like.

(Y/N): 5 years ago, wasn't that the battle you fought against with Toxic Chainsaw?

All Might: No, that's why I kept the secret from the public to hide my true form that they're didn't know. And I chosen your friend Young Midoriya as the successor and the new Symbol of Peace.

(Y/N): Successor? Chosen of what?

All Might: To inherit my quirk.

Making his friends to shocked of hearing this.

Rachel: Inheritor, the quirk to someone else?! That's impossible All Might, no one believe that can able to inherit quirk to someone else.

All Might: Yes, I know but however my quirk called One for All.

(Y/N)/Rachel/Ryuji: One for All?

They surprised hearing for the first time of All Might's quirk.

Izuku: Yes! That's why All Might is training for me to trained and inherit from his quirk to me. But I don't think I can....

He was cut from the laughing coming (Y/N) laughing making them to be confusion seeing laughing about.

Izuku: (-(Y/N)?!

(Y/N): Don't say that!

He smiles before placing his arm wrapping around on his neck.

Izuku: W-What with the sudden?!

He struggle from his grasped.

(Y/N): I'll help you to train and inherit from All Might's quirk.

Making them surprised hearing this before he lets go of Izuku's neck looking at him with a surprised looked.

Izuku: Really? You do that for me?

(Y/N): Scoff Of course I do that for you, you're my friend, we're always help each other, remember?

Izuku was staring him for the minutes before putting a smiles turning with the grin.

Izuku: Yeah!

They're both share laughing before they're heard the burst of laughing filled with joy and amazed turning to someone who's laughing looking at someone revealing it's All Might in his muscle form.

All Might: Friendship, it's always the amazing and awesomeness.

He turning to looked at (Y/N).

All Might: Young (Y/N), I'll train you alongside with Young Midoriya to get stronger.

(Y/N)/Izuku: Really?!

All Might: Of course!

While Rachel staring at her brother before making a smile making her brother unnoticed she smiles for him.

After while ago, when two boys are training to improve their strength, Izuku was lacking of push up, sit up, punching, kicking to his weak body, while (Y/N) is training to improve of his body thanks to be in karate class in black belt.

Rachel: See you, Mr Yagi!

Ryuji: See ya, All Might.

(Y/N): Later, All Might.

Izuku: I'll see you our training after we're accomplished our mission.

They all waving to goodbye to Number 1 hero, while All Might wave back with a smiles on his muscle form as the kid left.

A phone call coming from All Might, he picked it up, before answering it.

All Might's phone: A phone call... is here! A phone call... is here!

All Might: Moshi, moshi? Ahh Saito, it's good to see you!

Saito: All Might.... are you seriously giving the quirkless kid doesn't have his power, in 10 month?

All Might: Ahahahahahahaha! Why, yes! Of course!

Saito: Then you're foolish and idiot then. Just you're giving him your Quirk is the special quirk that can bested then ordinary quirk and the rider system but however.... he's not ready to use it and can't face our "greatest enemy"..... 

Making All Might's vanish and narrowed his eyes with hatred and vengeance remembering of his past.

All Might: I know but.... I can't forgive him for what he's done for my master and killed our friends.

Saito: I know, but we're must be rea.....

All Might: I met the user of the Decade.

Saito: What?

His tone on the phone call sounded cold making All Might shiver for the bit.

All Might: Yes, he doesn't know Decade exist in our world and we're only one know about Decade's origin.

His face became serious.

Saito: Do you trust him?

All Might: Well, it's hard for me to it but yes. I think that boy can be Savior and not the destroyer of the world.

He smiles a little.

Saito: Very well, but I hadn't decide if the user of Decade is the ally or enemy. If he is our enemy, we'll stopped him.

All Might: Gai.....

Saito: Later, All Might.

Soon he hang up the phone before he lean down his arm holding his phone looking at the sky before releasing the big sigh at night.

All Might: Young (Y/N), I hope you'll might be our allied and Savior.

Meanwhile in the Smith Photoshop/Coffee

After, Izuku tells calling his mother he staying with (Y/N) in another day, and she fine it. But Izuku feel bad for lying his mother that he was training his mentor All Might and travelling with (Y/N) to other multiverses.

And soon the gang went to sleep before they're travelling to the other world.

In the morning, (Y/N) and the gangs are outside looking at the world of W, there is the Fuuto Tower and (Y/N) looking at the Card of W.

(Y/N): This is the world of W.

Rachel: Yeah, we are in the world of W, if we're can accomplished our mission and.... what are you boys wearing?

She pointed out at (Y/N) and the gangs wearing like..... Camera crew. (Y/N) is holding the camera, Izuku holding the clapperboard, and Ryuji holding the boom microphone.

(Y/N): Yeah, it's seems the world want us to do and role as the camera crew.

Rachel: About what?

(Y/N): This, my little sister.

He showing the newspaper of Kamen Rider W the Vigilante saves the day.

Rachel: Eh? W is on the new?!

(Y/N): Yes. It might be.....

???: Hey you!

Making three turning towards someone revealing, Rosa with annoyed looked wearing her business clothes. 

Rosa: What you doing here and standing there?!

(Y/N): Who, us?

They pointed at themselves.

Rosa: Yes, you!

She looked at her watch before her eyes could widened.

Rosa: Oh no! We're going to be late, let's go!

She pushed the three boys going to the van.

Izuku: Wait, go where?

Rosa: To interviewed, silly!

As the van left leaving Rachel as she sweat dropped as she was watching the scene.

Inner Rachel: L-Leaving me to the bored job, again.

She going back to the Studio shop.

But they're were being unaware by someone else, revealing....

Katsumi: So, this is the world of W?

He smirked with sadistic and excitement.

Until the Dimensional Wall appears behind Katsumi, making him smirked revealing his boss/leader.

Katsumi: So, you're finally here boss.

Dark Decade: Mind, your tongue, Katsumi. I gotta gets back to the HQ and give you the new Gaia memory.

He giving to Katsumi the new type of Gaia memory, making him smirked with joy and excitment.

Katsumi: So, I'll take care of W and Decade and their mission.

Dark Decade: As you wish.

As Dark Decade leaving to the Dimensional wall, while Katsumi looking at the city of Fuuto holding his Eternal memory.

Katsumi: I'll be waiting for you.... W.

He presses his Gaia memory.

Eternal!

Meanwhile when the crew are live to filming on Rosa on news to talking about W vigiliante.

Rosa: Breaking new, this just in! News reporter Rosa Rose is taking to the scene, where the vigilante known as Kamen Rider W just save the day, just stopping the robbery from the bank. And we're here with the people. So guy, what's you think about W?

Girl: He so amazing!

Man: Awesome!

Boy: Superhero!

Girl: A knight in shining armour!

Old man: Heroically! 

Making her chuckles for a bit.

Rosa: That's all folks, this just ended about the vigilante of W. See ya.

As the filming ended, making Rosa sigh in tiredness.

Izuku: Here, Miss Rose.

He offering the cup of coffee, before she happily accepted.

Rosa: Thank you.

She sipping the coffee before looking at them.

Rosa: I supposed we're never met before, right.

(Y/N): Yes! THis is Izuku, Ryuji and I'm (Y/N).

Rosa: Nice to meet you guys.

Izuku: By the Miss Rose.

Rosa: Hmm?

Izuku: What you thinks about W?

Rosa: Good question, huh? W is a hero, defending us people from the evil. And he's always wanted to protect the city. I always respected him.

She smiles with a tints of pink blush.

The boys realize that she has the crushed on W.

(Y/N): Umm, Miss Rosa. Do you had the crushed on....

???: Rosa!

Making their head turns toward someone.

Rosa: Hiro?!

Hiroshi: Hey, Rosa I wanted to tell you that, good job on your works.

Rosa: Yes, you too Hiro.

Hiroshi: Yeah.

He nodded with a small blush.

And he looked and noticed at the boys.

Hiroshi: Um, Rosa who are they?

Rosa: Oh! Sorry, about that Hiro. Guys this is Hiroshi Hidari my childhood friend working in private detective. 

Hiroshi: Nice to meet you.

(Y/N): Yeah, you too.

They handshake each other in firmly but however (Y/N) senses and feeling that he might be possible as W.

Hiroshi: Is, something?

(Y/N): Oh, it's nothing.

Rosa: Yeah, Hiro likes to do be Half-boiled.

Making her childhood friend to be annoyed.

Hiroshi: Oi Rosa! I told you, it's hardboiled!

Inner (Y/N)/Ryuji/Izuku: Yep, he's the half of Double.

Rosa: Yeah, you see....

They were interrupted by the sound of explosion making them turns to seeing this, revealing a....

Explosion Dopant causing the explosion outs from his hand causing the damages of the city, and police arrive taking out their guns shooting on the Dopant but on effects on the chest and the damage.

Rosa: Oh no! It's Dopant! We're had to evacu....

She turns her head to her childhood friend but he just vanished without the truce and noticing.

Rosa: What the?! Hiro?!

She turn to the camera crew but (Y/N) disappeared without noticing.

Rosa: Again?!

She huffed her cheek before pouted in annoyed.

Rosa: Mou! Why it's always happened to me?!

At Hiroshi hiding in the valley way, he turn his head to checking if no one were here. He safe now.

He takes out his Double Driver.

He place his driver on his waist.

Hiroshi: Let's go Phillip.

At Phillip

There is the little boy reading the book, but he actually the other half of Double and the adoptive younger brother.

Phillip: Yes, big brother.

He nodded his head.

Before the driver appeared on his waist.

Phillip take out his cyclone memory and Hiroshi takes out his joker memory.

Cyclone!

Joker!

Phillip/Hiroshi: Henshin!

Phillip inserts on his driver. Cyclone memory vanished before he collapsed on the floor.

Cyclone memory appears on Hiroshi's Double driver on right side of slot, he pressed down before he insert his Joker memory on the empthy left slot. Opening into 'W'.

Cyclone! Joker!

https://youtu.be/3PYM-O2WNkc

W: Now! Count up your sins!

Right side W: Do we're always say that when someone not there.

Left side W: Yeah, but let's go.

Right side W: Hai! Nii san!

As police tried to fight but they're stood no chance but they had no choice for retreat.

Police chief: Dammit! Everyone! Retreat! We're had no chance for thi...

He was cut looking up in the sky seeing W driving his bike, flying in the sky before landed on the ground, he spins his bike around before kicking the Dopont on the chest sending him flying away in few feet away.

Police officer: It's W!

They were cheering and seeing a hero appeared.

Left side W: Guys, leave it to me. I'll make sure that he doesn't get away and pay for making the city to crying.

They all nodded their head and left.

As W charging towards Explosion while he gets up. W throw the punch and kick, sending the powerful punch using his joker aura arm.

Sending the monster towards the crates causing to damaged.

He flicked his wrist.

While they're walking towards monster but Explosion Dopant quickly gets up, using his arm and right side realize it.

Right side W: Nii san, looked out!

Too late, the explosion spread out coming from his arm, suddenly...

Attack Ride: Barrier!

They were protected by the barrier force to deflect the explosion and someone landed on the ground revealing Decade, shooting his Ride-Booker at the Dopant causing to force back and rolling on the ground.

Making them surprised this.

Left side W: Who is this?!

Right side W: Another, rider?!

Decade: You guys, alright?

Left side W: Yeah, we are but... who are you.

Decade: Just passing through kamen rider, remember that.

Hearing the sound of growling turning their heads, looking at the Explosion Dopant to burst out of explosion in rage.

Decade: Soo, what we're going to team up?

W look at him for a minute.

W: Yeah.

W remove their memories out of the slot before changing into the new form.

Luna! Trigger!

He take out his gun from his chest and Decade inserted his attack card in his driver.

Attack Ride: Blast!

They're both aim together before pulling the trigger, rapidly fast shooting at the dopant causing the spark out from his chest.

The riders do their finisher.

Trigger Maximum Drive!

Final Attack Ride: D-D-Decade!!!

There's the silhouttes of the rider cards aiming towards on the Explosion Dopant struggles to get up and W's gun filled with much enegy. Before they're pulled their trigger.

Sending the powerful blast towards to the Explosion dopant before screamed in pain, causing in explosion.

The dopant reverted back into his human form, fall down to knock out his gaia memory has been shattered and destroyed.

They sigh in relief.

They all reverted back into their citizen form and Hiroshi surprised and recognizes him.

Hiroshi: You...!

Making (Y/N) smirked.

(Y/N): Good to see you again, Hiroshi. Or could I say, W?

Hiroshi was staring with surprised and disbelief.

(Y/N): Don't worry about it, your secret with me.

Hiroshi then formed a smiles before handshake each other however they were being watched by Jessica with her cold eyes.

Until another appeared revealing one of her colleague. 

???: So, I knew you might be here, Jessica.

Jessica: So, you're finally be here, Storm.

Storm: Yeah, so Decade, is in this world.

Jessica: Yeah, but however seems like, Rena failed her mission. But however... can you do that.

She looked at her friend while checking her rifle.

And she ready to take down.

Storm: Yeah.

She narrows her eyes.

So, (Y/N) and the other arrive in the Base of W, is under the Private Detective's Fuuto, they were being amazed and impressed as the secret HQ. And meeting Hiroshi

Hiroshi: So, you're guys are not from our world?

As Hiroshi are asking, so yeah. The others explain to him that they're from another world not from their world. They're here to prevented dark rider to taking from their world because it is their mission.

(Y/N): Apparently, yes.

Phillip: Amazing, Multiverse Theory does exist.

Ryuji: Yeah, it does exist. But what your story?

Form the sibling has the sad expression.

Hiroshi: That is...

They're hear the knocking coming from outside.

Phillip: I'll get it.

 As Phillip waking up to the door in the surface, before he he open the door revealing.... Rosa.

Phillip: Big sister, Rosa!

Rosa: Hey, Phillip is Hiroshi here?

He shook his head.

Phillip: No, big brother is busy going finding the lost pet for the children.

He lying to Rosa.

Making her to be chuckled of his statement.

Rosa: I see, that's always Hiro kun.

As Rosa and Phillip are talking (Y/N) is having the rider conversation. While the others checking around their base.

(Y/N): Hey, Hiroshi.

Hiroshi: Yeah?

(Y/N): It is true that... you like Rosa?

Causing him to spit of coffee blushing in embarrassment making (Y/N) sly in smirk for knewing it.

Inner (Y/N): I knew it.

Hiroshi: W-W-What?! Nooo! I don't like her! How you know about it?!

(Y/N): Don't lied, to me. I saw you blushing when you're talking to her.

Hiroshi stared in disbelief before sigh and nodded and knowing that (Y/N) is right about it.

Hiroshi: Yeah, it's true.

(Y/N): I knew it! Then Are you going to tell her that y....

Hiroshi: I can't.

(Y/N): Eh?

He was surprised and confusion that Hiroshi with the sad expression.

Hiroshi: I can't tell her that me and Phillip are W. Ever since when we were the kid, she transfer to my school, we're always have each other back. But I started to fall in love with her. But however I knew if she see me and Phillip as W. Because I won't tell her that because one of my enemy might gets my love one to get hurt.

(Y/N): Hiroshi.....

Hiroshi: So, that why. I won't confess my feeling towards for Rosa.

(Y/N): I see... For her, right?

Making him form a sad smile little nodded a head for a bit.

Hiroshi: Yeah. Thank you.

Until Phillip gets back to downstairs. 

Phillip: Nii san, I just lied to Rosa nee that you're always hunting and searching the lost pet for the kid.

Making him chuckles.

Hiroshi: Yeah, thanks Phillip.

Phillip: But...

The little boy formed the sad expression.

Phillip: Isn't that we're feel bad for lying Rosa that we're keeping the secret from her.

Hiroshi: Phillip. I know we're lying to her but it's for her own safe.....

Until they're the screaming sound from outside, making Hiroshi realizes started to panicked and worried.

Hiroshi: Rosa!

As Hiroshi and the others run up hurried, going outside of the building. And Rosa knock out being carried by the armour man.

Hiroshi: ROSA!!!

???: I've been waiting for you, W.

Making them to be shocked that the armour man knows there name. Before he turned to them.

Hiroshi: What?!

Phillip: Another rider?!

(Y/N): No, he doesn't looked like an allied to me.

Making them turn to him in confusion.

Hiroshi: What you mean about that?

(Y/N): That guy.... is part of Dark riders and sent by Dark Decade.

Making the brothers to be shocked and the statements made Eternal laughing in joy and amazed by Decade user.

Eternal: Hahahahahahaha! You're really are interesting, Decade. But... I wanted to settle on W.

He pointing his finger to Hiroshi making an irritated and anger looked. Before gritted his teeth.

Eternal: Double, if you're wanted to see your woman in alone. Otherwise if you don't come, she'll be....

He gives thumb down to the brother.

Eternal: Dead.

Hiroshi: You bastard!

He shouted in anger before chaging to him but being stopped by (Y/N). Causing to Eternal to be laughing again.

Eternal: I'll see you later, W!

He vanished them.

Hiroshi: That's guy! He'll kill Rosa. I can't let him killed her....

(Y/N): I know, but we're need a pl...

He was cut by the bullets stopping down on the ground making them covered their arms to shield their eyes. Before they remove them revealing.... Storm holding her rifle gun.

(Y/N): Oh come on! Seriously?!

They were unawared being watched by Narutaki hiding behind the house.

He smirking with interesting.

Narutaki: I see. Decade you are hunted by the one who are from the other world. Seeing as the.... threat.

He vanished before went to the Dimensional Wall.

(Y/N) and Storm's are eye contacted.  What will happened to our hero after he's encountered the one from another world, where she's belong to the mysterious organization.

To be continued!
Vote for the next world after the end of W arc.

RWBY - 4

or 

Senran Kagura - 5

See you later