Aight, hear me out. I’m kind of going for a power metal-ish themed violin band, perhaps something like Unlucky Morpheus. Rei fills in the bassist spot obviously, Ako’s drums are super heavy so it goes with the metal theme, Rui for the violin of course, and double guitarists, Moca is extremely talented and can hold solos well, Sayo has a heavy sounding guitar which also suits metal.