Back when the Kuro city was heavily populated could any of the Kuros have cross bred children or half bloods of other species?

Lost Queen : Such an act was only for Kuros of high status, as we did often did marriages to form pacts with other clans and species. Reproducing would often seal the pact, and insure that Kuros and their kind were a wise joint. Those that bred outside the species and where NOT given proper permission were either stripped of all status, jailed, banished, or killed.