Intro:Be The One By Pandora ft Beverly

https://youtu.be/6ojba8rB_yg

Laboratory(3rd POV)

We see Ken is working on his fullbottles as he insert Lock and Panda to his driver.

Build Driver Announcer:Lock!Panda!

But it didn't say out Best Match as he took it out.

Ken:Not a best match.

He then insert Ninja and Rose to his driver.

Build Driver Announcer:Ninja!Rose!

But it didn't say it as Ken sigh while we see Riku is boxing at the bag.

Riku:Still didn't get a best match?

Ken:*Sigh*Yeah.It kinda bored.Your sister gave me these two fullbottles yesterday.

He look at the fullbottles that Miki gave him.

Ken:Anyway I will use them later in the battle.

Riku:Say less.

Next Day(Weskitagon University)

We see Ken is walking down the hallway while he is reading his book but then he saw something in front as he stop reading and look in front as he saw three girl is bullying another girl.

Lucy(Leader Of Girl Gang)

Kyoko Lin(Girl Gang Member)

Rena Hayashi(Girl Gang Member)

Kyoko:Your so weak hehe.

Rena:Thank for the money loser.

Ken then run toward to them as he stop them.

Ken:You girls stop bullying her!

Kyoko:Huh.Look who here.It's Ken that try to save the girl.

Ken:You!

Lucy:Girls!..That enough for it.*Look at the girl*Your lucky this time.

They left as Ken look at the girl.

Ken:You okay Bella?

Bella(Classmate)

Bella:I'm..okay..

She tried to get up but Ken grab her hand and got her up.

Ken:If those girls come again,just tell me okay.

He then left and head to his class as Bella look at Ken.

Bella:Ken...thank you...

Timeskip(Street)

We see Ken is buying his drinks at the store as he pay the money and leave.

Ken:Time to put this drink into the freezer so I can drink it.

He start walking back to his apartment but he accidently knock a person.

Ken:Oh sorry.

But then the person insert something to Ken body as Ken feel the pain and the person run away.

Ken:Wh-what did he insert to me...?!AAHHHH!

Ken then transformed into Stretch Smash.

The civilians look at the smash and start running away from the smash as Stretch Smash smash the vehicle and grab it and throw it at the building.

Meanwhile,we see Riku is sitting and watching the television as he is waiting for Ken to come back.

Riku:*Sigh*When is Ken will come back though..

Suddenly he heard a explosion sound as he walk to the window and look at far away as he see something is destroying the street.

Riku:Smash attack again huh?

He grab his driver and run toward to the scene.Then we see Stretch Smash is roaming around as we heard Ken voice.

Ken(Stretch Smash):Stop...it...!

But then we see Riku arrive at the scene as he place his driver to his waist.

Riku:This time I will defeat you!

He raise his left hand and waiting for the dragon device to came but...it somehow did not came.

Riku:Eh?!

The Stretch Smash charge at Riku as he tried to attack.

Riku:Where the hell are you Dragon?!I need you!

He dodge every of the attack from Stretch Smash as he punch the smash body.

Riku:It hurts!

The Stretch Smash kick Riku away as he got down and drop something as he pick it up and reveal it is Lock Fullbottle.

Riku:Ahh..Might as well use it.

He start shaking his both fullbottles and flip the cover as he insert to his driver.

Build Driver Announcer:Dragon!Lock!Best Match!

Riku:Huh?Best Match?!This is the first time I got it...whatever.

He start rotate the lever as the tubes came out and he does his pose.

Build Driver Announcer:Are You Ready?!

Riku:Henshin!

He then transformed into another form.

Build Driver Announcer:Fuin No Fantasy Star!KeyDragon!Yeah!

Riku(Build KeyDragon):Woah.A new form..

Stretch Smash look at Build and charge at him as Build dodge it and start attack it.He push the smash and use his Bind Master Key and slash the smash off as it back off.

The Stretch Smash then fire a lot of blue fireball at Build but he use his key on his left arm and slash off the fireball.He charge at the Smash and slash it using his key as it came out a blue flame energy and he slash at the smash as it got down and Build rotate his lever.

Build Driver Announcer:Ready!Go!Vortex Finish!

Riku(Build KeyDragon):Take this!

He fires several chains from his key at the Stretch Smash and bind it and then he fire a powerful dark blue fireball at it as it got hit and exploded as it turn back to Ken and the fullbottle is drop.Build then turn back to human.

Riku:Ken!

He run toward to Ken as he got him up.

Riku:You're okay?

Ken:Yeah I'm fine...that person just insert a fullbottle and turn me into a smash.

Riku:At least I save you.Come on I'll get you in.

They left the scene but then we see two person came out from the alleyway as they reveal their appearance.

???:So what do we do?Bring our little sister fullbottles back?

???:Yeah Layla...I will bring Mia fullbottles back when we meet..Build.

???:Whatever you say so....Max.

To Be Continued...

Notes:

-This is the first time Riku transformed into Kamen Rider Build(KeyDragon).