Credit goes to MaridiaMarius, big thanks to Tiny Bro and Pampsune for letting me humiliate them.

Ethan heard stories about Crescent and was intimidated at first, but found out he hosts really extravagent tea parties. So Ethan got himself an invite and was surprised to see Crescent's home on Turtle mountain. Most recognizable was his massive plushie hoard. Ethan drank one of Crescent's teas and turned into a plushie (Crescent spikes his teas with potions he buys from Kimo). Since Crescent was already wearing a Shin diaper, he decided to use the newly transformed Lucario as a stuffer (which he does alot when not wearing plush toys).
Ethan fit snuggly in Crescent's diaper and was looking foward to sitting his newly flattened alola meowth cushion. Crescent will make sure he's comfy before flattening that Lucario plush toy, at least Crescent's rump is feathery and it's clean (for now).
Crescent might try to see how many will join Ethan till the other party guests arrive for one of his tea parties.

Crescent may have fed Ethan a little too much, the lucario has a plushie gut, or maybe it's the sound box with humiliating phrases, while Pampaku and Sandoku just watch from a dimensional rift as they wanted to watch the party and see if Ethan is durable enough for the entire party.

Crescent belongs to Me
Shin owns himself
Ethan belongs to Tiny Bro (LittleBigKahuna38489)
Pokemon belong to Game Freak