Something is wrong with history. There was a huge war that nobody can really remember, and a massive number of people are said to have died in it. Clues to this mystery arise from an unexpected source when Naoya and his brother meet a woman who went to school with the mysterious Shoko Futami...
Just like a bird that flies because it can.
كالطير الذي يطير لقدرته على ذلك
Das ist wie bei Vögeln, die losfliegen.
Así como un ave vuela porque puede.
Así como un pájaro vuela porque puede.
C’est comme un oiseau qui vole.
Come un uccellino che vola solo perché ne è in grado.
Como um pássaro que voa porque pode.
Как птица, которая летает,
 потому что может.