That's not a simple question but I think all fans can answer easily . I'll try to talk in their names . Yes, there are other bands with the same style as SuG , oshare kei clothes , happy songs etc . But what other bands don't have is the magic of music that take your soul into a happy weird world , that gives you a reason to smile , that give you a an exist door from this hard reality that hit you when you don't expect it . This magic take control of our souls when Takeru'san start to sing every word from his soul and when the others connect the instruments at their hearts and start to play every note with such a powerful intensity . This magic erase all the bad moments , all the evil from this world , all the painful words that we heard , even if is just for a second . That's why they are special for us .