Giant naked people eating regular-sized people, and somehow it's one of the most emotionally devastating shows around.
Fun fact: Shōnen Jump rejected the manuscript before Kodansha published it and it sold over 110 million copies.
Roy and Moss made every actual IT worker feel seen, which is ironic given nobody at work notices them.
Fun fact: A US remake pilot starred Joel McHale, with Richard Ayoade reprising Moss, but it was never picked up.