>>31893984Because it doesn't in the game.
But let's be honest, Rotom Dex is a massive missed opportunity like that. Translating NPC Pokemon could've been a major selling point, and they could use it to access little mini-quests. Maybe a trainer's having trouble with their Pokemon, and you can swoop in, figure it out, and save the day by... I dunno. Collecting the right kind of berry? Helping to demonstrate certain moves so the other mon can figure it out? Play matchmaker and come back in a few days time for a bonus egg?
