Based on Sakyo Komatsu's 1973 bestseller sci-fi novel "Japan Sinks." The story of the 2020 web anime is set right after the 2020 Tokyo Summer Olympics, and follows the fate of the four members of the Muto family, including the protagonist girl Ayumu and his younger brother Gou.
Elenco: George Cockle , Taichi Takeda , Yuko Sasaki , Kensho Ono , Hiroyuki Yoshino , Masaki Terasoma , Umeji Sasaki , Reina Ueda , Tomo Muranaka , Nanako Mori , Daiki Hamano , Tomoko Shiota .