6 decades books

For decades the existence of Chromatic Aura had been kept secret. Set a decade after the desolation of Noir by the combined forces of the Rainbow Alliance, Jet, the last of Noir and more importantly, it''''s King, returns to the city. Can he safely see out his goals, and keep his continued existence from the other factions lest they unite to destroy him for once and all, or can he persist in peace and obscurity?