Gunparade Orchestra: Blue Chapter ~Send a letter from the Sea of ​​Light~ ( ガンパレード・オーケストラ 青の章 〜光の海から手紙を送ります〜) is a Japanese game co-developed by io-spiral, Dice Corporation and Alfa System. It was the final game of the Gunparade Orchestra game trilogy to be released for Playstation 2 on July 20, 2006.