Escaping Excaliber (working title)

In 2183 Earth was invaded by an advanced race of aliens known as the kiryuvente, In which the 2 races warred for nearly 3 centuries. Of which earth was destroyed and most of the kiryuvente and humans were dead, thus they drafted a peace treaty that stated children of the human race when they reach the age of 15 must host the parasite like children of the kiryuvente in order to repopulate both species. In doing so when a child is chosen by kiryuvente spawn they form a bond beyond any known to man. As a result of the bond is formed in which most of the time superhuman powers are given to the human host and are then given training for 5 years to deem their social status based on which of the 50 different types of kiryuvente children bond with the human host