Spy Kyoushitsu, also known as Spy Classroom, is a Japanese light novel series set in a world recovering from a great war fought through espionage and intelligence rather than direct combat. The story follows Klaus, an elite spy, who takes on the challenge of training a group of underachieving young spies for an impossible mission. With a blend of action, intrigue, and character development, the series explores themes of teamwork and trust. The anime adaptation brings these elements to life with engaging visuals and storytelling.