Babymetal (stylized as BABYMETAL) is a Japanese metal idol band.[5][6][7] Their line-up consists of Suzuka Nakamoto as "Su-metal", Yui Mizuno as "Yuimetal", and Moa Kikuchi as "Moametal". The concept of the group is a fusion of the metal and idol genres.[8] The three teenage girls and their band are managed by the Amuse talent agency. They released their debut album of the same name in February 2014.
Source: Wikipedia
Well, I like Anime (and I have the one or other soundtrack). So Babymetal is totally my kind of music

You will hear often, that this band is heard by paedophiliac

Because the members are 13, 13 and 18 (IIRC)
I bought the CD to LISTEN to the music - and I love it. Of course, I ordered both Live-Blu-rays (with totally 4 shows)

And no, I bought it not to see 13 years old girls. I bought it to see the show, see the music, see the fans.
Of course, this whole project is cast, but in Japan, this is common practise.
What makes this project so interesting is the crazy mixture of J-Pop, Death Metal, Thrash Metal and Reggae.