At last, Haruki sleeps with Kazusa.  Her wish finally comes true, and she prepares to leave for Europe. Haruki takes Setsuna to the airport, hoping that they can all be together once again.  When the three are reunited, everyone remembers the best moment of their lives: the last song they sang at the school concert.  The title of the song was...
I wouldn't want a future 
where I never loved you.
Ich hätte keine Zukunft gewollt, 
in der ich dich nie geliebt hätte.
No querría un futuro donde no te quisiera.
No querría un futuro donde 
no te hubiera querido.
Je ne peux imaginer 
ma vie sans t’avoir aimé.
Não quero um futuro em que
eu nunca o tenha amado.