i like the song!
their concept is "ART × GOTHIC × HIPHOP", more info on them here
new girl group "THE DEVIL’S KILLING MERRY-GO-ROUND" unveiled, "ART × GOTHIC × HIPHOP" concept, to debut in June! - K-Pop Source — Keeping the K-Pop Forum Spirit Alive
the demon girl is called "Ragnarok"! the Prison warden girl is called "Michelle Noir", she is an ex member of NECRONOMIDOL so her credentials as a satanic witch are legit the teasers sound good!
kpopsource.com
