Did you know that all four guys from Zanrokku are guitarists?
"NOBU is the first generation guitarist of this Band. And being a Bass player after the Shin (ex-bass) resigning"
"Ryuu is the second generation guitarist, after he decided to joining the band as a bass player. He switch position with Nobu"
"Miyu joined zanrokku for the guitarist position, Ryuu's partner with the different style of Gt.playing style and distortion"
"Jun ask to join zanrokku for the guitarist, but Nobu challenge him to play as a Bass player...and he agree..from guitarist to bass"
Source: Zanrokku official twitter.