Kiryuu is a pretty good band.
I wouldn't mind seeing them again, though I can't say I'm the biggest fan in the world.
The behavior of their (Japanese) fans is unacceptable, though. Completely ruined my experience, though for the live I went to I was there primarily to see BORN and Royz.
Well, I haven't experienced these fans you speak of but to be honest, every band has fans that will go to the extreme lengths to see the band live and follow them everywhere.
Don't get me wrong~ Kiryuu makes great music and they're cool guys.
I just had a bad experience at the one live I went to because many of the Kiryuu fans there [specifically] were being assholes and not spot-rotating like you're supposed to at event lives. If it weren't for the spot-holding Kiryuu fans, BORN fans such as myself and Microhead 4N's fans wouldn't have been royally pissed off. I actually ended up leaving early which means I couldn't demachi for BORN or Royz. mad
However, it seems Kiryuu is playing at a live I'm going to in May so I'll give them a try again.