Die-hard South Korean fans cheer and clap as their favourite superheroes strike poses in brightly coloured uniforms to the sounds of a soulful Japanese ballad, a nostalgic throwback to the days of VHS. It's been decades since the Japanese superhero series "Choudenshi Bioman" was last on TV, but its epic stories of good versus evil still resonate deeply for these South Korean millennials who recently attended a sold-out concert hall event in Seoul. "I thought that if I missed this chance, I'd never be able to see them [the cast] face to face," said one megafan. IMAGES AND SOUNDBITES