The kos that managed to pass the Silver-class training are returned to their parents, where the next training stage will begin.The absolute lowest condition for clearing the Silver training is not attacking another yukkuri even when they do not have accessories.CompostFrom this point, they'll be trained for Gold-class quality as they're raised to adulthood.Those that failed the Silver training are resigned to a fate of acting as compost processors.Their communal lives in the "village" begin.