Nope! Any and all types are welcome!
UtaForum.net
HiddenVenia
RenzoA
Well these are my favorite ones xD *shoves in Zuiga Mizuki, Yamine Renri, Gahata Meiji and Mawarine Shuu*
kamonohashi
Tohoku Kiritan's a nice bank
M. Enini
I recommend kohaku merry and shione lt!