In the year 311 of the Orbital Calendar, humanity has migrated to countless colony clusters in space. A space colony girl named Akiha Shishidou encounters a malevolent artificial intelligence named Leopard that has been installed on a colony.
1990
2007
1955
1984
2005
2001
1994
1983
1989
1981
1972
—
2013
2024
1978
2021