Let the sunshine in!

As for type of visual kei, at their very start they were okeshou kei (generally kind of looks like glam rock, but in their specific case they wore chic suits with their hair bleached and straight up like Polnareff or Guile or Benimaru), then they were kurofuku kei (this just means wearing cool outfits in all black, crazy hair optional), and around 1994 and beyond they can be called either soft visual (not super crazy-looking, but definitely more unique-looking than your average Joe on the street) or not vkei at all.

Their sound was beat rock (a pretty Japan-only type of rock music) during the okeshou kei era, during the kurofuku kei era they were beat rock with strong elements of post-punk or new wave, and beyond they have done all types of rock -- more post-punk, new wave, goth rock, garage rock, industrial, grunge, electronic... generally they can be called alt rock.

Most of the popular visual kei bands these days are metalcore, and I'm not huuuuuge on metal. Definitely don't hate it, I guess I prefer songs that sound depressed over angry?