need help with this ww2 era flag

[websta]

Sorry i know this is in the wrong area but I'm looking for any help I can get. This is my grandfathers WW2 era Japanese flag he discovered in an armory in hiroshima just after the bomb looking for any info or help.

[ObKrieger]

Sorry i know this is in the wrong area but I'm looking for any help I can get. This is my grandfathers WW2 era Japanese flag he discovered in an armory in hiroshima just after the bomb looking for any info or help.

I'm no nuclear physicist but if it came from Hiroshima then I would not want that thing in my house! I am not sure what it is, though, sorry.

[sam1chlt]

Yikes!

[mistervanels]

looks like a black raven bird, black raven birds are considered special birds in their religion, i know black ravens are put on many things , like Bushido Black Raven Katana Samurai Swords. Try look in that direction maybe. (IMOP)
many greetings
kim v.