Blue Wing Blitz is a Japanese-exclusive tactical role-playing game developed and published by Square. Unlike standard tactical video games, Blue Wing Blitz focuses on aerial battles, fought with aircraft, which can be customized. The events of the game begins in the Esk Republic, in an unnamed fictional world. Esk is threatened by the militaristic empire of Ordia, and the player's party is given the mission to repel the invasion.
Source: Wikipedia, "Blue Wing Blitz", available under the CC-BY-SA License.