"No Father I don't want to be married of to an official of the Big City. I want to become the Chief Librarian, like Second Uncle !" There is no choice left for Shin Sumi but to escape. Her plan is settled until she finds a strange book that forces her to join the famous Dark Sky Starry Sect. "What is that book ? Why does it bite me all the time ?" Will her path lead her to become the librarian she wanted ? Or will her craving for knowledge be satiated by something more... Magical ?