Every 50 years, new people are chosen to serve the castle and rule the country. Your role is chosen by the color of your ring. Grey is maiden/butler, purple is a knight who learn archery and sword fighting, White is learning your current skill better, such as magic, sword making, armor making, farming, herbalism, etc, black is not chosen, and green is a royal. Royals have died constantly and mysteriously, but the 3 immortal overlords have given enough proof it wasn't them, but everyone suspects them.

*written by two people, i have permission to post it on here*