As their 11:00 showtime approached, the hipster crowd dissipated and the Japanese flooded in. I believe I heard shouts of "Shinji-chan!" (which initially sounded an awful lot like Shin-chan), the bass player. I could also swear that I heard a cry of "Zatoichi-chan" (the blind swordsman, which could be a reference to the lead singer, or maybe I just misheard).
The show was energetic, and quite a lot of fun. My only complaint is that the extremely dim stage lighting made it difficult to see the performers most of the time!