For first-time director Maggie Kang (head of story on “The Lego Ninjago Movie”), “KPop: Demon Hunters” represents the fulfillment of a 20-year desire to make an animated movie about Korean culture. But what began as an exploration of demonology evolved into an explosive mashup of action and K-pop.

KPop Demon Hunters is the kind of movie that hooks audiences with its title alone, thanks to a promising mash-up of music and action. For music fans, the animated film boasts anticipated musical numbers,