Spy Classroom

Following a great war which engulfed numerous countries and came at a huge human cost, nations have forsworn overt warfare. Now battles are waged between spies, and the small Din Republic boasts an especially capable young man known as Klaus. When Klaus loses his mentor (and de facto father), he is given the man's failed mission and told to assemble his own elite spy team to infiltrate the neighboring country. Klaus agrees…but his idea of “elite” seems more like “incompetent” and the girls he picks for his mission don't look like they could spy on someone ten feet away from them, much less infiltrate an enemy nation. <em class=de-emphasized>(from manga)</em>

Synopsis from Anime News Network