It all began ten years ago. D2s attacking Boston, a blood-soaked concert hall: The incident known as the Boston Tragedy. The conductor who lost his life in that tragedy was none other than Kenji Asahina, Takt's father. After losing his father, the boy decides to devote himself to playing the piano and he lets his rage play through his melodies. The one who took care of him was a girl named Cosette, who looked just like Destiny.
Music has the brilliant power 
to strike down the D2s,
لدى الموسيقى القوّة الفائقة لإسقاط دي 2
La música tiene el poder
de derrotar a los D2.
La música tiene la capacidad
de derrotar a los D2.
La musique possède un grand pouvoir
permettant d’annihiler les D2,
La musica ha il folgorante
potere di abbattere i D2,
A música tem o brilhante
poder de acabar com os D2s,
В одно время она дивная сила,
способная противостоять Д2…