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...
The garrison may have defense, 
but they're not an offensive threat.
قد تكون الحاميّة حصينة دفاعيّة 
لكنّها لا تشكّل خطراً هجومياً
Ein Belagerter mag verteidigen können,
doch angreifen kann er nicht.
El cuartel cuenta con poder defensivo,
mas no ofensivo.
El cuartel cuenta con poder
defensivo, pero no ofensivo.
Elle peut se défendre,
mais pas lancer de contre-attaque.
Quella guarnigione ha un'ottima difesa, 
ma nessun potenziale offensivo.
A guarnição pode ter força 
de defesa, mas não de ataque.
Гарнизон сможет держать оборону, 
но не идти в контратаку.