Their choreographer should be fired and those outfits are so obviously (badly*) copied from Stella's Marionette.
As I write this, the video has 1,842,281 views of Youtube with a resounding 16,269 dislikes.
Jeez - I felt uncomfortable just watching this - like I'd get caught doing something I shouldn't. How will they even promote?
I just feel sorry for them 'cuz I doubt they actually even wanted to do something like this. It's probably just their company making them be like this...such a shame - their voices are actually pretty decent.