A magical curse has been passing from generation to generation in the Royal family, and this time, the Royal Twins will be affected. Trying to escape her duty of queen-to-be, Lumine meets a boy who tries to survive selling quartz and inspires him to join the Royal Army. But she wasn't expecting him to actually consider it, and now she needs to hide her deepest secret to her personal bodyguard; Worse yet, to the person she loves the most.