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...
You weren't answering your phone, 
and the door was unlocked.
Du hast dein Handy nicht abgenommen,
und deine Tür war nicht verschlossen.
No respondías al teléfono y 
la puerta no estaba cerrada.
No respondías al teléfono y 
la puerta no estaba cerrada.
Você não atendeu o telefone
e a porta estava aberta.