K-pop Demon slayer

Is this new show on Netflix called K-pop? Demon slayers and niece is like these three girls and they are demon slayer but to the to the other world they’re just being like a K-pop band and later on in the movie they meet like these boys and they like a well they’re not, but they is a demons and K-pop group and you can’t really tell cause they can disguise yourself as humans and as if they seem they can get rid of them and get like this banner where they can wear the demons can never be seen again one of these girls have patterns and patterns that were like either a demon or like half demon, and the girl is a half demon and but she still know the right side and at the end of the movie she actually gets fully turned into a demon halfway and one of the people sacrifices from the boys group it’s really giving you got me on grrrrr OK