Relations for Shinkyoku Soukai Polyphonica Plus

 Shinkyoku Soukai Polypho...   2005-08-08 ja  Shinkyoku Soukai Polypho...   2007-06-29 ja Same setting  Shinkyoku Soukai Polypho...   2007-08-10 ja Same setting  Shinkyoku Soukai Polypho...   2009-12-25 ja Sequel  Shinkyoku Soukai Polypho...   2011-07-22 ja Sequel  Shinkyoku Soukai Polypho...   2013-05-24 ja Sequel