Season 1

Many forces constantly jeopardize the thin veneer of peace between the countries Ostania and Westalis. In spite of that, spy named "Twilight" fulfills dangerous missions in the hope that no child will have to experience the horrors of war. In the Ostanian city of Berlint, Twilight dons the alias of "Loid Forger," a psychiatrist. However, his true intention is to gather intelligence on politician Donovan Desmond, who only appears rarely in public at his sons' school. Enlisting with the help of city hall clerk Yor Briar to act as his wife and adopting the six-year-old orphan Anya as his daughter, Loid enacts his plan. He will enroll Anya in the same school, where Loid hopes she will excel and give him the opportunity to meet Donovan. Unfortunately, even a man of his talents has trouble playing the figure of a loving father and husband. And just like Loid is hiding his true identity, Yor—who is an underground assassin—and Anya—an esper—have no plans to disclose their own secrets either.