Brother, this is the story of two countries, Ostania and Westalis, between which the veil of peace is very thin because dirty leaders and war-mongers are always busy inciting enmity. In the midst of all this is our hero "Twilight", the world's greatest spy. His mission is to maintain peace in the world so that no child has to witness the devastation of war. Now for his new mission, he becomes a doctor named "Lloyd Forger" and settles in the city of Berlin. But the real problem is that he has to investigate a leader, Donovan Desmond, who only appears at his children's school, Eden Academy. Lloyd creates a fake family: he marries a girl named Yor Briar and adopts a girl named Anya. The twist is that Loid doesn't know that his wife Yor is actually a dangerous assassin (Thorn Princess), and Anya is an "esper" who can read people's minds! These three hide their secrets from each other, but as they live together, they find true love. Now it remains to be seen whether this "deceptive" family will save the world or their own home!