remember in 5th gen we grinded versus Audino in rustling grass? well i'm looking for a pikachu and I thought it might be in rustling grass in the forest, but no grass will rustle.
I'm pretty sure there is no Rustling Grass. I do not have the game but I've looked around and talked to some showdown users, no mention of it.
Umm. You run into a Pikachu in regular grass, Not rustling. I ran into one in regular grass. :)