Musaigen no Phantom World is a 2016 anime series produced by Kyoto Animation, adapted from the light novel by Sōichirō Hatano. Its limbo sequence became one of the most shared moments from the show, clipped and reposted across anime forums, video edits and social feeds long after broadcast. The joke worked because the series treated a party game with complete seriousness, and that contrast made the audio easy to reuse out of context. It remains popular as shorthand for anime fans joking about flexibility, fanservice staging and impossible close calls.