Japan Sinks: 2020 (日本沈没2020 Nippon Chinbotsu 2020) is a web anime series based on the 1973 Disaster Novel by Japanese writer Sakyo Komatsu. The adaptation changes the 1970's setting from the novel to current times, right after the Tokyo Olympics. It was released worldwide on Netflix on July 9, 2020.
A swarm of earthquakes hit the Japanese archipelago causing the sudden eruption of a dormant volcano. Soon after the people find themselves facing a wave of mysterious natural disasters... and ultimately discover an unbelievable consequence.