Crossfaith is experiencing an existential rock 'n' roll crisis. It's not stopping them from partying like rock stars, though.

"I'm a bit hung over," vocalist Kenta Koie tells me as our interview starts. He was out drinking the night before with programmer and keyboardist Terufumi Tamano. "I can't even remember what I sang at karaoke."

The band, which also includes bassist Hiroki Ikegawa, guitarist Kazuki Takemura and drummer Tatsuya Amano, is celebrating 10 years together. A decade in they are still on an upward trajectory that is taking them to large venues both in Japan and overseas.