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.
2025
—
1975
1966
2003
2000
2001
2002
1991
1982
2004
2014
2016
2006
2010
1998
2005
2024