Spy Kyoushitsu

After a devastating war convinces nations to avoid another open conflict, espionage becomes the weapon of the new age. Lily is an enthusiastic student who wants to serve the Din Republic, but her practical performance is so poor that graduation is slipping away. Her last chance is an invitation to join the secret team Lamplight, where she discovers that the other members are struggling students just like her.

Their leader is the genius spy Klaus, and their first assignment sounds absurd: infiltrate the Galgad Empire and complete an "Impossible Mission" that destroyed the team sent before them. They have only a month to prepare, while Klaus is terrible at explaining his own skills. So the girls choose a training method he cannot ignore: deceive and defeat their instructor every day until they become spies worthy of the mission.