We open with Team RWBY, JNR, and Vice.

Vice: Man... This isn't as fun without Y/N to hang out with.

George walks up.

George: Yo. I did some work. Scanning the Rex Vistamp before you transform should swap you back.

Vice: Are you sure?

George: There's only one way to know for sure.

Vice shuffles his feet.

George: ... When you're ready, come find me.

The scientist walks off and your friends look at Vice.

Vice: I'm sorry... I just don't trust him. I'm afraid he might hurt Y/N.

Ruby: It's okay. We understand.

Yang: Yeah.

George has reached a less populated area and Neo suddenly grabs him in a choke hold.

George: Get off!

George tosses the girl off him and takes a fighting stance. Neo glares before lunging, George sidesteps her attack and kicks her in the side.

George: I'm not just a scientist.

Cinder grabs him and holds a volcanic glass knife to his throat.

Cinder: You're lucky we need you alive.

Cinder drags George off and takes him to Olteca.

Olteca: Good work, ladies.

George: What do you want?

Olteca: I want you to unlock the Demons Driver's full power.

George: Oh?

Olteca: You want to see how powerful your Kamen Riders can get, right?

George: Tch. Fine.

Meanwhile, August, Emily, Vice, Team RWBY, JNR, and Penny reach a building labeled "Happy Spa: Temporary Location". The group enters the bath house and find your parents.

August: Hey, Mom, Dad.

Dad: Kids! Wait... Vice?

Mom: Where's Y/N?

Emily: T-That's a long story...

Everyone sits down as August explains the adventure your group went on to get to Atlas.

Mom: I'm glad you're all here safe and sound.

Penny: I don't believe we've met. I'm Penny.

Dad: Nice to meet you.

Your mom notices Weiss, who looks anxious.

Mom: Weiss, how about you help me prepare tea?

Weiss: Um... Okay.

Once the two of them are out of earshot, your mom looks at her.

Mom: Are you okay, dear?

Weiss: Um... Y-Yeah. Why?

Mom: It's okay. You can talk to me.

Weiss: ...

The white haired girl sighs.

Weiss: I... I'm worried about Y/N... If we can't switch him with Vice again, he'll die...

Mom: Hm... Well... Let me share a secret with you. My husband was in a very dangerous situation once upon a time. But... He was able to get free... I think Y/N will find a way out of this. Especially with such a beautiful and kind girl like you waiting for him.

Weiss smiles a little.

Weiss: Thank you for talking to me about this.

Mom: Of course.

The two return to the group and August gets a call.

August: Yeah? On it.

He hangs up.

August: George has been kidnapped in Mantle.

Emily: We should split up into teams.

Nora: Ren, Jaune, and I will look downtown.

August: Blake, Yang, and I will check eastside Mantle.

Penny: Ruby and I will check uptown.

Emily: That leaves Vice, Weiss, and I to check westside.

The group splits up and start searching.

Emily: Vice, can you smell George?

Vice: I think so... This way.

The three run to an abandoned building and find George tied up.

Emily: George!

Olteca: Glad you could join us.

The cultist walks into view, already wearing the Demons Driver.

Olteca: Now the fun begins...

Spider!
Deal!

Olteca: Henshin...

Decide Up! Kamen! (Rider) Demons!

Emily: Vice, Weiss, save George and get out of here! Henshin!

Cobra!
Liberal Up!

Emily transforms and rushes at Olteca, dodging his first attack and punching him in the side.

Vice runs over and tries to untie George's restraints but Weiss runs over and uses her rapier to cut him free.

George: Thanks.

Vice: Why did he even kidnap you?

George: He made me unlock the Demons Driver's full power. Sorry...

Vice: Gah!

George: Have you thought about my suggestion?

Vice: ...

You appear in a ghostly form next to Vice.

Y/N: Let's do it...

Vice: Fine!

Rex! Energy!

Vice: Are you sure-

George: Just get it over with!

Vice: Okay... I'll do this... I'll do this with Y/N!

Vice swipes himself with the Rolling Vistamp and the two of you swap places.

Y/N: And now... Henshin!

Vice Up! Kamen Rider Revice! Vice Vice Vice!

Revice: Now my blood's boiling!

You rush at Olteca and punch him.

Jeanne: Y/N?

Revice: It's me this time.

You use the Rolling Vistamp to paint a lightning bolt in the air and Emily jumps through with Lovekov in fan form. The youngest L/N slashes at Olteca with now electrically charged attacks.

Olteca: Gah!

He tries to pin the two of you in place with some web but you swipe and the threads disperse.

Revice: This is payback!

You charge and slide, letting the Rolling Vistamp run its roller across the ground.

Knuckle Up!

You then deliver a powerful punch to Olteca's abdomen.

Rolling Rider Punch!

Demons: Enough!

Add!

Batta!
Scorpion!
Mogura!

When Olteca tries to scan the third Vistamp for a Genomix, his Driver sparks and pushes the stamp away.

Demons: What?!

Jeanne & Revice: Let's do this in one shot!

Hissatsu Shonin!

Cobra! Liberal Smash!

Rolling Stamping Finish!

The two of you kick Olteca and he slams into a wall, de-transforming and running away.

You de-transform and smile.

Weiss: Y/N!

Your girlfriend runs up and hugs you tightly.

Y/N: Hey...

You hold her and smile before breaking the hug.

Y/N: Thanks, Vice.

You suddenly turn around, your eyes glow unnaturally blue, and you now have small horns and Vice's tail. Vice's voice also comes from your mouth.

Y/N: You're most welcome!

You shake as the features disappear and then reappear.

Y/N: Eh?

George: Goddamn!

Emily: Eh?!

Weiss: What?!

Y/N & Vice: We're stuck together this time?!

During this, the masked figure from before speaks with someone.

??????: This was unexpected but still an interesting outcome... We should keep a closer eye on them...

Meanwhile... Olteca finds a new hideout and slams the Demons Driver on a table.

Olteca: Damn him! Goldenrod tricked us!

????: No...

The Driver speaks.

????: I merely fight how I wish...

Olteca: What?

????: It's time I return home...

The Driver floats up and glows before a red wisp flies out of it and out of the hideout. Without the Demon, the Driver clatters to the ground.

End of Part 41