New life born

Years ago a group of scientists found a meteor that had a living organism in it. As they study it they were surprised to learn that it was intelligent.As they talked with it they learned it was a symbiotic parasyte that was searching for a host. A few days later they found that it had died, but it was surrounded by what appeared to be babies of its kind. As they studied them they decided to see what would happen if they injected them into fertilized eggs from various species of animals. All but six of the experiments died before they were able to be "born". The six surving species were sent to various places to be raised by a family. Two were sent to a hidden ninja village, two to a military installation and the last two went to an Academy of Magic. By the age of twelve all six had surpassed their teachers in abilities.Four years later they were sent into the world to gain experience dealing with people other than the ones they have lived with.