Post-MF we see Urouge heading to Raijin Island. And there an old woman named Kasa offers them umbrellas to land on the island.
Now wtf are these damn umbrellas made of, that's gone allow em to tank that absurd amount of lightning? Look at the damn size of those bolts coming down on mountains. And she's stated to be from Raijin Island, so people actually live there..
So what are your guesses on what the Umbrellas they use that can tank that absurd lightning at Raijin Island? They got houses made of rubber? like damn bruh

Now wtf are these damn umbrellas made of, that's gone allow em to tank that absurd amount of lightning? Look at the damn size of those bolts coming down on mountains. And she's stated to be from Raijin Island, so people actually live there..

So what are your guesses on what the Umbrellas they use that can tank that absurd lightning at Raijin Island? They got houses made of rubber? like damn bruh