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.
1992
2002
1997
2003
2001
1990
1960
1995
1964
2007
1957
—
1985
1998
1984
1980
1973
1955