sorry, I am curious about what does this japanese symbol represents. It's from the latest Kong's movie, Skull Island , and I believ it is taken from the fight airplane of a japanese pilot during second world war.
To me it looks like the symbol む (mu) which could be relevant if it was on a fighter plane. I say this because 'mu' also 無 which represents 'nothingness' in buddhism seems to me something a Japanese pilot may have written on their plane in the war. Not very well explained but I hope you get my gist.