A viral pop song titled 'Friendly Father' has been banned in South Korea for allegedly breaching the National Security Act. The song praises North Korea's leader Kim Jong Un as a "friendly father" and "great leader", which goes against the act's limits on praising and propagating Kim's regime. While the ban has sparked curiosity among South Koreans, some are arguing that the video should remain accessible for its retro vibe and the catchy tune that helps them focus on tasks.