On the last day, the last hour and the last minute of spring, the World Tree bloomed for the first time… . When the Tree of World first budded, no flower bloomed alone. Two flowers bloom at the same time, live together and wither at the same time. Eventually, the gods understood, and each flower that bloomed represented a soul and a soul mate. And Rue, the emperor of the Tree Of World, fell in love with a mortal who shouldn't have fallen in love with the first spark in his heart...