Inside Rebecca's ship, Y/N and the wizards are currently staring at the hologram of Rebecca's B-Cube. With a push on her B-Cube, the hologram square multiplies into smaller squares. 

Lucy: Whoa! This is amazing!

Y/N starts to blush when he sees a video of Robo-Happy and Rebecca in a blue cat outfit.

Rebecca (video): You're watching Rebecca and Happy's...

Rebecca and Robo-Happy (video): Aoneko Channel! (cat pose) Meow-wow! 

Y/N thought's: Holy Alien X! She looks so cute and sexy in that cat outfit! Uhhh, damn get out of my head you pervy thoughts!

Happy: Wow, she's so... Meow-wow!

Rebecca: Don't mock us!

Robo-Happy: Wow. Was he imitating us?

Erza: (blush) She's so brave wearing that!

Rebecca (video): Happy, do you like spicy food?

Robo-Happy (video): Yeah, I love spicy food.

Gray: So what is this thing?

Rebecca: This is a video site called B-Cube. And with this cube I'm holding, it allows me to take, host, and even watch a lot of videos.

Y/N: So, it's like Youtube back on my universe.

Rebecca: We're not the only ones who do these videos. There's lots of B-Cubers, just like us.

Robo-Happy: And the more people who watch our videos, the more we get paid!

Lucy: So that's what you plan to do with the video of the fight between Y/N and Shiki.

Rebecca: Yup! I just know it will get a ton of views!

Robo-Happy: Aye sir! 

Gray went towards the video as he tries to look under her skirt in the video, but suddenly, it zooms in, making her skirt and legs none visible.

Gray: What the?! Her legs disappear!

Rebecca: Nice try, Gray, but B-Cube has anti-pervert firewalls for guys like you.

Ur smacked Gray over the head, causing him to take his hand to the spot she hit.

Ur: Didn't I teach you to respect someone's privacy!

Gray: This coming from the woman would made two 8-year-olds strip down to their underwear?!

Y/N: So all you guys do is make videos?

Rebecca: It's even more than that. We get to explore all sorts of planets we normally never get to see, like Earthland for example.

Lucy: Hold up... if we're all here, then who is driving the ship right now?

Robo-Happy: The Aqua Wing can fly without a pilot.

Erza: (amazed) That's incredible!

Shiki: By the way, what's up with Natsu?

They all looked to see Natsu on the floor looking very sick.

Happy: Oh that? Natsu always gets like this on a vehicle. He has motion sickness.

Rebecca: Really?! On all vehicles?

Lucy: As long it's moving, he's immediately on the floor. One time, I got captured by this creep, Natsu came blazing in, then he was on the floor ready to puke his guts.

Y/N: Wow, that's such a lame weakness.

Natsu: Someone just kill me already! Please!

Erza: No worries. I've got this.

Erza walked over to Natsu, pushed him onto his back, and then she stuck him right in the guts, knocking the pink haired mage out.

Ur: Well that's one way to end his suffering.

Happy: That's Erza for you!

Shiki: Hey! Can I try taking it out for a spin or something?

Rebecca: You wanna fly it?

Shiki: Yeah, why not?

Y/N: Wait a moment. Have you ever piloted a spaceship before?

Shiki: Nope. Not even once.

Lucy: (sweet drop) Well, at least he's honest.

Rebecca: Well, if you've never really flown a ship before, I guess you could just hold the control stick.

She and Robo-Happy looked at each other as they did a high-paw-five.

Rebecca: We could even make a video about it!

Robo-Happy: "Newbie tries flying a spaceship" and it's not clickbait!

Rebecca: Oh my gosh, it's perfect!

Lucy: (worried) Are we sure this is a good idea?

Shiki thought's: I think I'm starting to understand why no one likes your videos.

After driving through space with Shiki holding the controls, the team saw a brown planet with a ring system surrounding it.

Y/N: Is that Norma?

Robo-Happy: Yup! That's the one.

Rebecca: Nice. (looks at Shiki) Now hop up so I can fly us in.

Shiki: (looks at Rebecca) What do you mean? I just started. And all I got to do the whole time is hold the control stick. I bet ya I can land it if you let me try.

Rebecca: I'll have you know, that landing a spaceship takes a lot more than sitting in a chair and holding a control stick!

Shiki: I know that!

Rebecca: Then let's switch.

Robo-Happy: "Cocky newb tries landing a spaceship for the first time in his life."

Rebecca: That'll be an awesome video!

Shiki: Yeah!

Y/N and Lucy were looking at the three with a deadpan look on their faces.

Y/N & Lucy: We have a bad feeling about this.

Rebecca: Okay, all you gotta do is keep the control stick horizontal and then press the buttons on the side one by one, starting with-

Before she can tell him the order, Shiki pushes all of the buttons that were displayed near him as Rebecca screams before she starts to choke him out with her arms around his neck. 

Rebecca: I said one by one, you idiot!

Shiki: (struggles) But it's faster if I mash all the buttons at the same time!

Gray: And who exactly told you that?

Suddenly, the alarm starts to go off and a bunch of warning and emergency signs appear on the screen.

Ur: (angry) GREAT WORK GENIUS!!!

Shiki: Nice! Does that mean we're ready to land?

Rebecca: No, that's the alarm system!

Robo-Happy: Never underestimate a newb!

As they enter Norma's atmosphere at high speed, the ship started turning from overheat.

Shiki: Whoa-whoo! A spaceship's supposed to be this fast when a newb tries landing them?

Rebecca: We're not landing in this speed!

Robo-Happy: We're crashing!

Shiki: Huh?!

Erza: BRACE FOR IMPACT!!!!!

Everyone was holding on while Natsu was rolling down the floor.

Y/N: (pushes Shiki off the seat) Out of the way, Shiki! I'll try landing it!

Lucy: Wait, have you ever done this before?!

Y/N: Umm... Yes, I am a professional... flyer.

Lucy: So never!

Y/N: Shut up! I only drove a car, and I can fly in my alien forms!

Shiki: So wait, does that mean we're safe?

Y/N: (acts calm) Yeah, yeah, that means you're completely safe. 

Happy: Why are you acting so calm about this?! 

After they enter the atmosphere and get past the clouds they see a giant stone pillar.

Ur: What?!

Erza: Y/N! 

Rebecca: Dodge it! Dodge it!

Y/N: I know, don't yell at me while I'm trying to concentrate here!

Y/N turns the ship around to dodge the stone pillar. The Aqua Wing keeps on dodging and going around the stone pillars, even went above one, all while Natus who was still unconscious was bouncing around.

Y/N: (sighs in relief) So far made it without a scratch.

Robo-Happy: Watch out Y/N! It's right in front of us!

Y/N: Huh?

Y/N looks in front of him and realizes they are heading for a giant stone pillar. As they approach the pillar they all scream in fear of crashing into the pillar, which it did. After they crash into the pillar, Rebecca and Robo-Happy are pressed on the glass after the crash.

They begin to fall down to the planet's surface. As they are falling, everyone started screaming in fear of what will happen when they reach the surface as the ship crashed landed on the front part.

2 minutes later

Rebecca: (punches Y/N on the head) What the hell is wrong with you?! You crashed my spaceship!

Y/N: Ow! I'm sorry, Rebecca! I didn't mean too!

Gray: And you said you were professional flyer.  

Y/N: Hey, at least I wasn't the one who mashed on the buttons like a newbie! 

Shiki: (laughs) It'll be a good video, though! 

Erza then suddenly hit Shiki on the head with a hammer she requip.

Erza: (angry) WHO WAS IT THAT STARTED THIS THING IN THE FIRST PLACE?!?!?!

Shiki: Owie... I'm sorry.

Robo-Happy: Guys, what about the ship?

Y/N: I got it!

Y/N reached for the Omnitrix as he went through to his playlist and selected the right alien for this task. 

With a green flash, stood a twelve feet tall humanoid alien with well-developed muscles, two pairs of four-fingered arms with whisker-like spikes on each forearm, and red skin. A black stripe goes from his chin to his lower lip, a black ponytail, and he had a pair of four green eyes, a main pair and a smaller pair below them. He lacked ears and a nose. He wore a pair of gold wrist and ankle bands, wore black pants with a gold waistband and fingerless gloves and had a tattoo-like stripes on his body, and had two golden sashes that went across his chest, with the Omnitrix symbol being on his chest.

(imagine he's wearing pants and not his underwear) 

Four Arms: Four Arms!

Rebecca: Wow, it's Four Arms!

Robo-Happy: Yeah, he's so cool!

Four Arms went over to the Aqua Wing and with his arms lifted the ship up with his strength and then set it down gently, shocking the group.

Lucy: Holy crap!

Gray: That's insane! 

Natsu: He's so strong! 

Rebecca: I know Four Arms was strong, but I didn't know you were strong enough to lift a spaceship. 

Four Arms: Well this form has really impressive strength!

Ur: You know, you could grind meat on those abs of yours!

Four Arms: (blush) Okay, that was a weird thing to say...

Ur: What all I'm saying is... This guy's got some nice looking muscles.

Just then, an alarm goes off on Rebecca's B-Cube.

Lucy: What's that?

Rebecca: It's a safety measure. The weather on the planet Norma has always been pretty crazy, so I set this alarm to alert me

Gray: What do you mean by "crazy"?

Rebecca: Take a look. 

Y/N, Shiki and the wizards look up in the sky as they saw stone pillars falling from the sky which freaked them out.

Y/N: What the fuck?!

Shiki: Wait a sec! What's going on?!

Natsu: Why are there rocks falling from the sky?!

Rebecca: It's pretty remarkable, isn't it? Those are all earth Ether crystals.  

Gray: Wait, those are made out of Ether?

Happy: They're not just rocks? 

Rebecca: Not quite. This planet has a lot of earth Ether. The earth element Ether in the atmosphere, crystailzes in the sky and falls to the ground. After they fall, they eventually become part of the earth again. It's almost like one big cycle. (points at a smaller pillar) See how that crystal over there is much shorter than the others? It probably fell a long time ago. 

Shiki: Earth crystals, Ether, yeah, I get it. 

Wait, just what the hell is Ether?!

Rebecca: How do you have Ether Gear and still not know what Ether is?! 

Lucy: He's as clueless as Natsu. 

Y/N: Now that Shiki mentions it, I always wonder what Ether is too. Is it some kind of energy source? 

Robo-Happy: It's basically the source of all power. Ether flows through humans, the atmosphere, and even all machines like me. But if that's too complicated, just think of it as magic. 

Shiki: Magic. 

Rebecca: That's what the Happy blasters use too. They're able to fire special Ether bullets. That means everyone has Ether flowing through them. Including even you, Shiki. 

Shiki: Including me? 

Rebecca: But Ether Gear is different. 

It's a power that forces the Ether which flows through your body, to rearrange itself. Like a machine.

Shiki: So I'm a mechanical sorcerer?! 

Happy: (sweat drop) What fantasy world are you living in?

Erza: Hold on, how can the people that are living here survive in the surface with all this going on?

Rebecca: The truth is, they can't. That's why they built their nation underground instead. 

The group followed Rebecca and Robo-Happy to a rocky entrance that has four elevators. They went on one of the elevators which takes them down to the underground city. 

Y/N: Wow, the city is cool.

Shiki: Look at all the humans underground! (sees colorful birds with rabid ears) And whatever those things are. 

Lucy: Aw, they're so cute! 

Natsu: Why do those birds have rabbit ears?

Happy: Aye.

Shiki: And me! I'm underground now, too! We're all underground!

Rebecca: (sighs)

Shiki: Hey! (looks around) There's no bugs around here, are there?

Ur: (sweat drops) That's what you're worried about?

Y/N: That's enough. Let's just go already.

(timeskip)

After they walked through the city for a bit, they finally arrived at professor Weisz's house.

Rebecca: Time to go see the professor! 

Y/N: So this is where he lives, huh? 

Rebecca: Yeah. Once we've introduced you to him and tell him about your problem, he'll happily help you get back to your universe. 

Y/N: (smile) I'm looking forward to meeting him. 

However, when they went inside, the house looks empty.

Lucy: Um, are you sure he's home?

Gray: It looks like the place has been abandoned.

Robo-Happy: Professor!

Rebecca: Anybody home?!

Ur: Still nothing.

Erza: Did you get the right address?

Rebecca: Yes. He always lives here.

Robo-Happy: (checks his phone) He hasn't opened our email yet.

Rebecca: Uh, Professor Weisz! It's me, Rebecca!

As Shiki is looking around he finds a pair of goggles and puts them on. But when he does, he looks at Robo-Happy and sees his robot body which made him widen his eyes.

Robo-Happy: Professor, you here?! 

Shiki takes them off as he sees Robo-Happy is normal.

Happy: It looks like he's not home. 

Rebecca: I wonder if something happened to him.

Shiki puts the goggles back on and sees Rebecca, Y/N, Natsu, Lucy, Gray, Erza, and Ur naked through its vision. 

Y/N: (notices the goggles) Huh? Where did you find those goggles, Shiki?

Rebecca: (walks to Shiki) Do you even know what that does? That thing could be dangerous!

What they don't know is that they were X-ray goggles. She is trying to take them off him until a stranger appears and points a gun at them.

???: Don't move.

Everyone turned and saw a tall young adult with a slim build, dark eyes and short blond hair. He has a few bangs brushed to his right and a single earring is worn on his left ear. His initial outfit consists of a long-sleeved, light-blue coat with an open high collar and dark-colored shoulder pads over a black turtleneck. Underneath is a short-sleeved white shirt with black sleeves, sports a pair of dark trousers, and plain, white boots. 

Ur: Who the hell are you?

???: I could ask you the same thing. What do you people think you're doing in my house?

Gray: (cocks a brow) Your house?

Rebecca: Wait, what do you mean... your house? This is the home of Professor Weisz.

He then cocks his gun, scaring Rebecca thinking he is going to fire.

???: Did you say professor?

Robo-Happy: Yeah, you know, Professor Weisz Steiner? We came in here a few years back. And he was able to save my life.

???: My name is Weisz Steiner. 

And I've never seen either of you in my life. So quit yapping and fess up. 

Rebecca and Happy are shocked to see and hear that the man in front of them say he's Weisz Steiner while Shiki, Y/N, and the wizards are a bit confused in the situation.

Y/N: Wait, Weisz? As in Weisz Steiner?

Robo-Happy: What's going on? 

Shiki: Wow, he's a whole lot younger than I thought he'd be! (realized) Huh? Wait a minute. I thought you guys knew each other.

Happy: WHAT'S GOING ON HERE?!?!?!

Chapter 15 ended. 

That's another chapter done. Even though I did most of it, I like to thank @EricHuber98 for helping me out on this. 

Speaking of which, regarding, his, Zeb, and Braedimus' OCS, where and when you think they should appear? 

Let me know at the comments below, peace out and enjoy!