Ikta is a brilliant, but lazy and unmotivated boy.  His childhood friend, a high-ranking daughter of a noble, offers him an easy position at a library if he can help he get the top score on a military exam.  But their lives take a sudden turn when the boat carrying them to the exam runs aground, and Ikta rescues a mysterious girl on board.  When she turns out to be a princess, and they all find themselves behind enemy lines, Ikta is going to start having to work hard for real...
If not for the Eternal Spirit Tree's ring,
،لولا خاتم شجرة الرّوح الخالدة
Ohne den Ring
des ewigen Geisterbaums
Me percaté gracias al anillo
del Árbol del Espíritu Eterno.
Se non avessi visto l'anello dell'Eterno Albero
degli Spiriti, non avrei mai compreso chi foste.
Se não fosse pelo anel do 
Espírito da Árvore Eterna,
Без перстня Древа бессмертной души