I've tried doing a bit of research on these two for an idea that I have but the pages on Wikipedia are a bit lacking, especially with Fujin, and I'm not exactly sure where to start looking for info.
I was wondering if there's any nifty little myths and legends surrounding them. I know about the belly button one with respect to Raijin and how he was feasting on Izanmi's rotten corpse in Yomi and how he was sent after Izangi when he looked upon Izanmi's hellish form because of her shame of her degraded state. I know that Fujin has a bag of winds but that's about it. I know about Raijin's drums too and about Raijuu.
Other than that I got nothing. Things like the belly button legend would be useful if you know of any. Personality traits would be good to, if there are any that is.
Also would anyone happen to know if there has been any incident where a mortal has been to Heaven or Niflheim and not been dead or a spirit in the AMG manga or anime?
If you know anything it'd be great, thanks.