Chandra
Shivering and cold, the lost boy attempted to navigate the waterfall and the forests around it. His pants were soaking wet at this point, he had to move his carved masks to one side of him to make sure they wouldn't get soaked. They clanked together loudly, wood on wood.

He didn't know how long he's been here, desperately trying to get some sort of connection on his Arc Phone. He didn't have anywhere to go, he was *Completely* Lost and he was starving and thirsty. He didn't know if the water here was safe to drink, as it looked somewhat murky. He wasn't willing to risk testing that theory.
Matthew
A bulky figure carefully navigated around the mossy stones and uneven ground with a hiking pik, a large Mabosstiff ambling by his side. Catching sight of the waterfall, he starts approaching it with the intent to settle down and take some rest.

Past the roaring water, a strange clacking sound alerted Arven to the presence of another person; not too far off, considering the faint outline he saw when he turned his head. He calls out to them in a loud voice, a hand steadied on his pick, "Hello? Is anyone there?"
Chandra
The young boy glanced over, squinting through the thick spray of water the waterfall let off. Someone had called for him? He raised his arm and waved, shouting back.

"HOOOOOIII!" He called, waving his arms and quickly beginning to hobble over. "DO YOU KNOW WHERE WE ARE?" 
Boy has some lungs to be able to yell so clearly over the waterfall.
As he approached, he saw a strange pokemon at the strangers side. He knew to keep his distance, then. Even in his somewhat exhausted daze, he knew any new pokemon could mean grave danger.
Matthew
Arven quickly walked to the direction of the voice and hollered out with his own, "WE'RE IN A PRIvate ISLAND WitH ONLY SK- ghack- SKILLED TRAINERS!"

"DON'T MIND THE DOG, HE'S FRIENDLY. HOW DID YOU GET HERE?", somehow, he got a sense of deja vu from this encounter; a person not knowing where they are could easily be read as just them getting lost, but a very recent incident made him suspect something.
Chandra
He hummed for a moment, staring at the strange pokemon. It was like nothing he'd seen in Hisui.
"Uh... I fell asleep and woke up in the middle of the forest! It's definitely not Hisui, though, which is why I'm worried."

He took out a pokeball, still nervous about the dog pokemon, and sent out his Luxray. The larger-than-life beast staring down at Arven and his pokemon. Though, at least it seemed friendly.
"Who are you?" He called.
Matthew
He huffed a bit from the yelling, and then blinked in surprise. "Hisui...? I've never heard of that region before. You didn't get here by invitation either?", the deja vu was *Very* Strong at this point. And the boy's clothes were not helping, "Is that like, another name from Johto? Or something? Your clothing doesn't look very modern..."

Arven quietly whistled in appreciation of the big boye, "Dunno what that is, but that looks cool", his dog was a bit wary, but only sat behind its owner without a peep. "My name is Arven, its nice to meet you! And you are...?"
Chandra
"My name is..." He paused a moment, almost too long. His brain felt all scrambled and foggy for a moment. "My name is Lucas." His Luxray dipped its head when Lucas introduced himself, as if greeting Arven aswell. What an odd name that was. *Arven.*

"Uhm, I don't know what you mean. Hisui? It's the region home of Dialga and Palkia. Y'know... The Almighty Sinnoh?" Lucas was puzzled, how could one *Not* Know of Hisui? He's not sure if it's been around as long as he thinks, but it has to be well known for all of it's rich history!
Matthew
"Ohh, so that's what its called", one could tell that he hasn't been particularly attentive with his history classes, "So you woke up here, not knowing how or why... That honestly reminds me of another guy who got spit out of a past timeline, but a bit about that later."

He looks Lucas up and down, "You're absolutely sopping right now, how about we settle by somewhere warm and get you something hot to eat?", the lad would get pneumonia if he just stood there like that, and Arven's massive pack had enough ingredients for a quick meal.