KPop Demon Hunters has captured streaming records, the zeitgeist, and the hearts of die-hard fans everywhere. What started as a stylish, demon-slaying girl-power fantasy became a global phenomenon, even sneaking onto the Billboard charts this year. But the animated musical also caught Netflix flatfooted, leaving the streamer running to catch up. For years Netflix famously avoided diving into merchandising, but when KPop Demon Hunters exploded into a worldwide obsession, fa