''...Among the countless stars in the sky there are also some twins...When one of them falls to earth, it neither goes out nor is it lost, as many think. The fallen star is born as a creature that looks very different from all the others and for this reason no one seems to recognize it. These unique creatures make a great journey to discover themselves. Along the way they encounter many enemies and face many dangers. But heaven, who created them, gives them her weapons and with them they become the most splendid fighters...''