Princess Darian, the youngest of seven siblings and a tomboy, spends her days searching for guardian spirits to prove herself as the most capable candidate for the kingdom's throne. However, her task is far from easy, especially as her older brothers are also vying for the same position. Fortunately, her strict and easily angered personal guardian, Kiiru, is always by her side - although his lengthy scoldings can be a burden. Despite his dependability, Kiiru harbors a secret that may greatly affect Princess Darian's future. How will she overcome these obstacles?