Princess Principal take you on a journey with unusual young girls as they conduct espionage, all types of spy work, and even engage in assassinations. This is another take on the cute girls doing dark things. I am getting flashback of Madoka Magica. Tanteikid, you have made a mistake. Oh Then you explain it. Warning, there a few hints of yuri undertones that sensei might not have mentioned.
The kingdom of Dowa, which is subdivided into 13 autonomous states, has many agencies that are controlled by the giant organisation known as ACCA. The main problem is the there were too little number of episodes to explore the history of this place.