Four years had passed since Sagan's called a truce with the D2s. Music was still taboo throughout the world, and melodies ceased to be heard. Somewhere in America, which was now a wasteland, a little boy who grew up not knowing what music is hears the melody from a piano. The one playing it is a young man with black hair named Takt. And then, a deformed creature known as a D2 and a girl named Destiny, who is armed with a sword, appear as though they were lured in by the melody.
No wonder they don't 
show themselves so easily.
لا عجب في عدم الكشف عن أنفسهم بسهولة
Deswegen zeigen sie sich
also nicht von selbst.
Por eso no salía.
Por eso no salía.
Voilà pourquoi il restait caché.
Non mi stupisce che
non compaiano così facilmente.
É por isso que eles não aparecem.
То-то вылезать не хотел…