This is a great article from Jame-world that talks about visual kei concert etiquette in Japan. Check it out! I will write a blog post about it myself later.
"Visual kei is a particularly meticulous scene with fans that follow bands often like a life line. These shows are unlike any others within Japan. While a normal rock or punk concert is reminiscent of the wild and often erratic behavior seen in western countries with crowd surfing and individualistic conduct, visual kei fans are orderly, uniform and precise – sometimes to an abnormal level."
Read more here:http://www.jame-world.com/uk/articles-72145-visual-kei-concert-etiquette-a-beginner-s-guide.html