Zen is a 20 year old prince in the show, followed by Shirayuki who is 19. Izana, the eldest prince, 25. But there is a younger sibling of Zen and Izana. it's Annie. She was only 18 but was well known around the castle for being the princess. But does Shirayuki know her? No. But when she meets the young girl, that changes. Especially when she sees how Zen treats his little sister.
