A master spy must create a fake family to complete his most dangerous mission yet. Master spy Twilight is tasked with infiltrating an elite private school to prevent a war, but the only way in is to establish a family. He quickly adopts Anya, a telepathic orphan, and marries Yor, a deadly assassin, neither of whom know the other's true identity or Twilight's own deception. Together, this unlikely trio must navigate the complexities of family life while maintaining their secret lives, all under the watchful eyes of the school and the world.

The first volume of Spy x Family is celebrated for its unique blend of espionage, comedy, and found family themes. Readers and critics alike have praised the ingenious premise of a spy, an assassin, and a telepath forming an unlikely family unit. The narrative skillfully balances thrilling action sequences with heartwarming and humorous interactions between the main characters. Anya, in particular, has been highlighted as a breakout character due to her charming personality and telepathic insights, which drive much of the comedic tension. The series is noted for its fast pacing and engaging character dynamics, making it a highly anticipated read.