Chapter 1

Mission: 1 (ミッション: 1, Misshon: 1) is the first chapter of the SPY x FAMILY manga, written and illustrated by Tatsuya Endo. It was released on March 25, 2019.

Plot
In Westalis, a diplomat from the eastern country of Ostania dies in a car accident on their way to the embassy. The Westalian Intelligence organization view it as an assassination by far-right extremists from the east, attempting to spark a war between the two countries of Westalis and Ostania. They decide to put a stop to this scheme by leaving it to their most skilled agent, .

Meanwhile, an investigator is handing photos of the Ostanian Minister of Foreign Affairs wearing a wig to an old man, who intends on using the pictures to force him to resign. He drives away in a black car and the investigator slinks away, only to be interrupted by the same old man who demands for the photos. It is revealed that the old man earlier was the skilled spy, , in disguise.

, under the identitiy of "Robert", has a meal with the daughter of the old man, Karen, who talks about how mad her father was. Seeing a couple in the midst of proposing in the restaurant, she brings up marriage to "Robert" but , who no longer has use for her, decides to break up with her instead. He walks away, disposing of both his fake glasses and his mask of "Robert".

 is in a train station where he exchanges newspapers with a mysterious old man, who walks away and meows as a secret code for a cipher.  gets on the train for Berlint and reads the given newspaper, revealing a secret message from his organization. The organization praises his efforts on his last mission and introduces his next mission and target, to investigate the President of the Nation Unity Party, Donovan Desmond, who threatens the peace between the two countries. In order to do this, the organization proceeds to tell  that he must get married and have a child, which  responds in shock by spitting out his coffee. The organization further explains that Donovan Desmond is rather paranoid and only comes out to the regular get-togethers held at his son's prestigious school, thus he must enroll his child in this school to infiltrate these meetings and is given only one week to do so. The plan is introduced as Operation  as the key to maintaining peace between the two countries, as well as the whole world.  accepts the mission for the sake of a better world.

 purchases a family unit in Ostania, obtaining a new identity as "Loid Forger" and a psychiatrist. Loid Forger goes to a rather run-down and shady looking orphanage, in order to adopt a child for Operation . He asks for a child that can read and write, to which the  orphanage owner introduces Anya, wanting to get rid of her. Loid is initially reluctant due to her young appearance and height, but Anya responds to his concerns and is able to complete a rather complicated crossword puzzle. It is revealed Anya is an esper that escaped from the facility of a mysterious organization, formerly known as Subject 007, who can read minds. Loid brings her back home and introduces the setting that she has always been his daughter.

Loid goes out shopping and Anya insists on tagging along, in the hopes of experiencing adventure. Due to Loid's spy mindset and Anya's mind reading abilities, Anya responds to Loid's thoughts, which makes her actions appear rather puzzling to Loid, including Anya bursting into tears and begging not to be thrown away in response to Loid thinking of replacing her. Loid, who is confounded by her illogical behaviour, goes to a library to borrow books and guides on raising a child.

The next day, Loid tries to get Anya to study for the enrollment test but Anya is adamant about not studying, intending to read everyone else's minds instead. Loid, frustrated, decides to head out without Anya, but Anya persistently follows him until he barricades the entrance of the house and traps her inside. Loid meets Frankie, who gives him an application form for the exam and the question sheet. Frankie also obtains information about Anya, revealing that there are no records of her birth, age and parentage, and that she has gone through various foster homes in the past year under various names.

Meanwhile, Anya, currently trapped inside the house, is bored and disappointed that spies aren't as exciting as she thought. Before Loid left, she managed to read Loid's mind to obtain the combination to his locked spy gear, which she uses to open Loid's transmission device. Anya fiddles with the equipment, resulting in her connecting to the old man from the beginning of the chapter. Anya now satisfied, hurriedly tidies everything to avoid Loid finding out. Anya has a flashback to her past as an experiment subject, being forced to "study" and not being allowed to play for the sake of world peace.

Loid returns from his trip outside and notices that the barricade has been moved. He enters the house, revealing that a thug is hiding behind the door with a metal bar. The man attempts to hit him with the bar, but Loid dodges and counterattacks by striking his jaw, knocking him out. Another man inside the house tries to shoot at Loid, but Loid uses his groceries to guard against him and hits him with a chair while he is distracted. Loid searches for Anya in her room, but she is nowhere to be seen. As Loid thinks of abandoning Anya and starting over, the first thug sneaks behind him and attempts to swing the metal bar at Loid.

At an abandoned supermarket, Anya has been gagged and bound by the kidnappers, the gang headed by the old man, who tracked the transmission signal and intend on using her as a hostage to force  to take photos of the wig himself. An underling who suggests that they give up on the wig is shot in the head with a silenced pistol, frightening Anya. The thugs who were left at the house have returned, bringing back a bound man with a bag over his head. The first thug, now named Nguyen, hobbles in pain and complains about Loid's movements. When the old man takes off the bag, the man is revealed to be Nguyen in a suit, to the shock of the others. The fake Nguyen has disappeared, along with Anya, and is now running away. Ania, moved by Loid's decision to save her, bursts into tears, reminding Loid of his childhood as a crying war orphan. Loid, still disguised as Nguyen, sets Anya down outside the supermarket and lies that they're a team of pro tag players, giving her directions to a police station and giving her a note for them, intending on letting Anya go to a better orphanage and making a new plan without a child. Anya tries to protest, but Loid chases her off and pulls off his disguise.

The gang is running through the supermarket, trying to find , but set off a wire trap that causes flour to be released, obscuring their vision.  attacks the thugs one by one until they're all down. Loid holds a gun to the head of the old man, Edgar, threatening Edgar with his daughter, Karen.

Loid returns to the exit of the supermarket and is surprised by Anya still sitting at the same place. Remembering his earlier disguise, Loid makes up an excuse for being there. Anya clings to Loid, wanting to stay with Loid and return to their home. Loid is reminded that Anya has gone through numerous foster homes and brings her with him. On a tram, he lies that he found a venomous snake at their old home and they have to move houses.

Now taking the exam for Eden Academy, Anya tries to read minds for answers but to her dismay, most of the children are panicked or in tears. Anya calms down and is able to remember what Loid taught her, allowing her to pass. Loid is overjoyed with her success, relaxing and collapsing from the fatigue. At their new home, Anya gets a letter from the mailman and crawls into Loid's arms while he is asleep. Loid is startled and Anya hands him the mail she received earlier, which turns out to be from Eden Academy about the secondary exam needing both parents. The Forgers must face their newest challenge, obtaining a mother for the interview.