In Count Bleck's Castle, Yang was seen somewhere in one of the castle's rooms. 

Yang: Damn it. Where the hell is this? All I can remember was trying to stop Count Bleck from using that giant black heart thing, and then ... I ended up here. (Sigh) I hope (Y/N), Ruby, Weiss, Blake, and the others managed to find Peach somehow. 

She thought about her boyfriend, her sister, her girlfriend, and her friends. 

Yang: I can't just stand here and wait for them. I have to go! 

???: HEY! There she is! 

She saw two goombas appear. 

Yang: Goombas? 

Goomba: I'm Gary! 

Goomba 2: And I'm Joe! 

Gary and Joe: We've been looking for you Yang! 

Yang: Really? Oh yeah, Bowser was in this too. Sheesh, have you seen your idiot boss around? And what about his elites? 

Gary: No, no sign of Lord Bowser. 

Joe: Mercury, Emerald, Neo, Roman, and Cinder are nowhere to be seen either. 

Yang: Hmph. Guess we're down on our luck. 

Joe: So, do you think we should get out of here? Maybe find a path? 

Yang: I guess so. If we get out of here, we might be able to find our buddies! Alright, let's bounce! 

The three took off through the halls, until they found- 

Gary: Guys! It's a dead end. 

Yang: Sheesh, this place is like a maze. How did Bleck design his castle in the first place? 

Joe: I know right, Lord Bowser's castle is much cooler. We got an arcade, and a food court, and we also have this really cool armory with- 

Yang: How did you guys manage to make your castle so hospitable? 

Gary: Since Lord Bowser has both a son and a daughter, he tries to make everything comfortable for them. 

Yang: Got to give it to the idiot, he may be a persistent dumbass, but he's a good dad. Now- 

But then Gary was brainwashed! 

Gary: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAARGH! HAIL COUNT BLECK! 

Joe: NO! GARY!!! 

Nastasia appeared. 

Nastasia: I've been looking for you, Yang Xiao-Long. 

Yang: HEY! You're that secretary lady who was with Count Bleck! 

Nastasia: Yes. And you're teh one who tried to ruin our plans. You're going to need a little disciplinary action. 

Yang: Like hell! 

Joe: G-Gary! YOU BITCH! AAAAAAAAAARGH! 

He charged at her, but- 

Joe: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAARGH! 

He was brainwashed too! 

Yang: LEAVE THEM ALONE! THIS IS BETWEEN US! I WON'T LET YOU DO WHAT YOU WANT AND DESTROY ALL EXISTENCE! 

Nastasia: Boys, hold her down. 

Minions: YES LADY NASTASIA! 

A whole bunch of Bowser's brainwashed minions came to attack! 

Yang: BRING IT ON! 

Yang charged at them, and began to beat them all up! 

Yang: I CAN TAKE YOU ALL ON! 

They stood no chance against her, but after a while, she was losing strength due to using Kaioken too much. 

Yang: Getting ... tired ... can't ... m- 

She was then restrained. 

Nastasia: You picked up a good fight. But I'm afraid, you're going to be helping us now. 

Nastasia used her powers on Yang, and soon enough Yang blacked out. 

On another hand... 

The man from before met up with the woman who saved him. 

Woman: You're late, did something happen? 

Man: Yes, my father caught me. Sneaking out of the castle won't be easy after that. 

Woman: I was worried. 

Man: You are a strange girl. You know what I am and yet you're not afraid. 

Woman: I don't care about what you are. I just wanted to see you. Is that so wrong? 

Man: No! Of course not! I wanted to see you too! Timpani, do you mind if I sit next to you? 

Timpani: Please do, Blumiere, let's return to our conversation. 

Back in Flipside... 

You all returned to the Tower. 

Merlin: Ah! Welcome back my friends. 

Nora: Sup Merlin? 

Pyrrha: We found the third Pure Heart! 

Rin: Merlee was very nice and she told us that there are more heroes. Not just (Y/N) who are destined to save the worlds. 

Merlin: Is that so? So, all of you are involved. 

Tippi: Yeah, but ... who else? 

Then suddenly- 

Weiss: GUYS! LOOK! 

Weiss pointed to the Void as it got bigger! 

(Y/N): It's growing! We need to move! 

Merlin: Yes. But before you go to the next Heart Pillar, you have to know. 

(Y/N): What is it Merlin? 

Merlin: The Light Prognosticus and the Dark Prognosticus both speak about someone known as "the woman with long yellow hair." Though, I don't know how she's involved. 

Blake: Could it be? 

(Y/N): It could be a coincidence. Whether it is Yang or not, we can't know for sure unless we figure it out! 

Later... 

You all insert the third Pure Heart into the next Heart Pillar, and the same procedure happens, with a yellow door appearing on top of the Flipside Tower! 

(Y/N): Alright! Let's get going! 

Everyone: YEAH! 

Through the door you all went to find... 

Blake: Hey, this seems like an old school videogame. 

The place looked super 8-bit! 

Ruby: Yeah! This is neat. So Tippi, about the Pure Heart. 

Tippi: I can sense it, but it's ... very close. 

(Y/N): That sounds easy! Let's- 

???: AHA! 

Tippi: AAAAAAAAAAAGH! 

Tippi was grabbed by a tongue! 

???: OH THIS IS PERFECT! 

A chameleon appeared. 

Francis (A nerdy chameleon who is obsessed with geek culture and insects! Sounds like Bubble Bass from SpongeBob!) 

(Y/N): HEY! WHAT THE HELL WAS THAT?! 

Francis: Hands off! This is a super-rare pixelated butterfly! I've been searching for one to show off to my friends at digibutter.nerr! 

Ruby: She doesn't belong to you! Give her back! 

Nora: YEAH! OR I'LL BREAK YOUR LEGS! CHAMELEON! 

Francis: No! You're not going to catch me! I'm going to miss this week's episode of "The Groducs Chronicles"! No way I'm going to entrust my digital Recordmeow to tape an episode that epic! 

He smirked and began to laugh as he disappeared! 

Francis' Laugh: 

https://youtu.be/hnFPcjqd3ME

(Y/N): GRR! AFTER THAT NERDY CHAMELEON!