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.
I'm only here so you can at 
least live like a human being.
أنا هنا فقط كي تتمكّن من العيش
ككائن بشريّ على الأقلّ
Sono qui solo per cercare
di farti vivere come un essere umano.
Eu só venho aqui para que você
ainda possa viver como um humano.