I have watched a couple of videos from Babymetal before, it's just not my kind of tea.
I can't stand this kind of super Kawaii girls jumping and dancing the whole time on stage.
But the song 'Akatsuki' is quite good, though.
nb, I don't know Aldious, she sings quite good. I just watched a couple of her videos. Wow, how she can handle all the high tone!