So, Luna was awoken due to her Gameboy ringing. (I still have no idea how a Gameboy can act as a phone, but if Luna could look like a boy, then anything would be possible.)

“Hello, and welcome to the world of Pokémon!”

Luna awoke screaming “GACKAEORJKEFODGVJERKigfnerodfbgwejnrodln!!!!Q HALP!!!!!@!” and I’m too lazy to write the rest of the dialogue, so then the Gameboy (Professor Birch) said, “So, are you a booooooy or are you a giiiiiiiiiiiiirl?” Then Luna stared at the Gameboy and yelled “GACKAEORJKEFODGVJERKigfnerodfbgwejnrodln!!!!Q HALP!!!!!@!” Then she realized, that somehow, someone managed to contact her using the Gameboy. Then she was all like “Grrrrrr….”

“Oh, so you’re a girl! What was your name again?”

*Deep profound silence*

“Oh, so you’re THAAAAT Luna. Yeah, your father told me all about you.”

“Okeydokey”

“I’m so glad that we get to be neighbors! You should come to my lab once you’ve settled in.”

“Okeydokey.”

And conveniently, the Gameboy shut itself off as soon as the doors of the trailer swung open and Luna fell out.

“Hi, honey! How was your ride? I hope you were okay sitting in the back.”

Luna just stared.

“How about you just go inside and check out your room! You have your own room this time!”

“So, I’ve been sleeping in the same room as you for 10 years and I haven’t noticed?”

“…”

“Okeydokey-wait, why is there only one bedroom?”

“First rule of Pokémon houses: Someone’s room must be hidden from you.”

“Okeydokey.”

So, then Luna did random pre-teen bedroom stuff, like lying on the floor and staring at the ceiling. "HEY LUNA, COME HERE!!!!!”

So, then Luna skipped down the stairs and appeared in the downstairs of the house.

“Is dad on TV?”

Yes, even for a relatively childish child, she called her father “Dad” because he somehow existed, despite the other 8.57383 protagonists not having one.

“Nope-Hey, why don’t you go to your next-door neighbor’s house!”

“Oh, you mean the creepy guy in the Gameboy? “

Luna’s mother slapped her forehead. “You know what, just go and say hi.”

“Okeydokey.”

So, hesitantly, Luna headed over to the great depths of THE NEIGHBOR’S HOUSE.

She knocked on the door.

“Oh, hello there! You must be Luna. We’ve heard SOOOOOOOOOOOOOOOO MUCH about you!”, said a strange lady, while hugging Luna, nearly crushing her ribcage.

“GACKAEORJKEFODGVJERKigfnerodfbgwejnrodln!!!!Q HALP!!!!!@!”

“Why don’t you go and say hi to my son? He’s just upstairs!”

“Okeydokey.”, said Luna, while silently panicking.

So, hesitantly, Luna headed up the dreaded steps to the UPSTAIRS, where another child dwelled.

“Stuff no one cares about, check, pleasant disposition, check, aaaand…OH GOSH OH GOSH OH GOSH OH GOSH WHO ART THOU AND HOWEST DID THOU ENTER THY QUARTERS?”

“GACKAEORJKEFODGVJERKigfnerodfbgwejnrodln!!!!Q HALP!!!!!@!”

“OH GOSH OH GOSH OH GOSH OH GOSH OH GOSH NOW I REMEMBER! YOU’RE OUR CRAZY NEIGHBOR!!!”

“GACK-wait, you’re the crazy dude in the Gameboy?”

“No, that’s my dad. Oh, hey, my name is Sunny, but you can call me…”

“Wait, what should I call you?”

“Never mind, I don’t actually know.”