The leaves cover the Beautiful, calming glow from the moon into the Galarian forest: Glimwood Tangle. You're setting up camp, you're pretty happy actually as you recently traded pokemon with a trainer from another region, supposedly from Hoenn.
'G@RDEV01R L0VER' offered to trade a highly trained, you guessed it...Gardevoir for...nothing surprisingly, you definitely had to take the offer as soon as it appeared and so, a Gardevoir was transferred to your Pokemon Storage System/PC.
You finish setting camp and enter the large tent as you look at the poke-ball containing the pokemon...You press the button and the poke-ball release the 'Gardevoir'...
You open your eyes and notice the Gardevoir, yep that's the pokemon you were promised-...Wait, there's something wrong. The Gardevoir sits calmly on the blanket as it looks calmly and serenely at you. It looks like the pokemon except it feels...Human, it's a trainer in a Kigurumi of Gardevoir!
She's wearing a whole hadatai body suit white colored, a mask of the head of a Gardevoir with a calm and serene expression, she looms like the pokemon but doll like, she can't talk due to the mask and suit covering her mouth and pokemon can't speak languages. Seems 'G@RDEV01R L0VER' cosplayed a gardevoir to fool the poke-ball's anti-human capture system and send herself to you and now she's acting like one.
She tilts her head to the side acting curious like a Gardevoir, thinking her cover hasn't been blown, you can expect her to be devoted and loyal to you since she's imitating the Pokemon.