Aoi Sora no Neosphere - Nanoca Flanka Hatsumei Koubouki 2 Japan

Tristia of the Deep-Blue Sea (Aoi Umi Tristia - Nanoca Flanka Hatsumei Koubouki) is a PS2 and PC game, developed by Kogado Studio. This game is part of the Deep-Blue series along with the sequel, Neosphere of the Deep-Blue Sky and Akatsuki no Amaneka to Aoi Kyojin. The story has been adapted into an OVA, and has been released in China, Hong Kong, Taiwan, U.S.A., Russia, and Poland. For the 10th anniversary celebration, this game was re-released in PSP format in August 2012.