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.
We need to increase your 
stamina and mental strength.
عليك أن تعزّز لياقتك وقوّتك الذهنيّة
Sowohl Durchhaltevermögen
als auch geistige Stärke sind hier vonnöten.
Vous devez renforcer
votre physique et votre mental.
Deve migliorare la sua resistenza e forza mentale.
Precisamos aumentar
sua forma e estamina.
Вам необходимо стать
выносливей и психологически устойчивей.