Chapter 55

Mission 55 (: 55) is the fifty-fifth chapter of the SPY x FAMILY manga, written and illustrated by Tatsuya Endo. It was released on November 1, 2021.

Summary
After finishing her fight with the Swordsman, Yor wonders how she found her weapon the way she did and if someone was behind it. Below, Anya hears her thoughts and retreats, not wanting to be spotted. Yor brushes it off and supposes that it was the wind, then checks on Matthew.

Inside the bilge, Loid suspects more bombs hidden in the ship and tells this to everyone inside. Loid explains that if their enemy’s goal is to sink the ship, the bomb he disarmed would not be enough. He suggests evacuating the passengers as a precaution, which the SSS agents refuse, saying they cannot afford to cause a panic, which Loid sees as them trying to save face. The agents make an order to have every free officer and crew member search the ship, and to ensure that none of their VIP passengers notice. At the ship atrium, Anya rushes back to the daycare and encounters the injured Assassins' Leader, who tries thinking of a new strategy to kill Olka. However, he smells explosives inside a clock in the area and realizes it is the doing of the informant. After he leaves, Anya thinks about telling this to Loid, but does not know where he is and wants to avoid revealing her secret. Instead, she tells a nearby crew member that she saw a strange man wiping a booger on the clock. While initially skeptical, the crew member decides to have it checked out. Outside Princess Lorelei, the informant listens to his bugs on a raft tied to the ship. As he hears that all the assassins have been wiped out, the Leader drops in. Pulling out his switchblade, he asks the informant where he is going, calling him Snoops. He asks what he was thinking by planting the bombs, and Snoops answers that he did so to send Olka and her guards sinking with the boat. The Leader points out that their employer, Leonardo Hapoon, has friends on the ship, and Snoops replies that he made the bombs look like they were from the West, which could spark another war, something he believes Hapoon would like. The Leader tells Snoops to get moving, but they quickly turn on each other when Snoops says he only brought enough supplies for one person on the raft.

Back inside the ship, Loid leads the covert operation in defusing the bombs and is told that a bomb was found on the upper deck. After seeing the bomb hidden inside the clock, Loid wonders if the true goal of the enemy really is to sink the ship. He realizes there will not be enough time to disarm it and instead unscrews the clock from its post and removes it, settling on throwing it into the sea. Meanwhile, the Leader tries to stab Snoops, who catches his arm and points his gun at his head, then explains his master plan of setting off the "real" fireworks show. Despite the crew member's pleas, Loid throws the clock off the ship, just above the Leader and Snoops. The bomb goes off, knocking the assassins off the raft. With the bomb dealt with, Loid tells the crew member to announce something over the intercom to calm everyone down.

Watching from afar, Anya sees that the bomb was stopped and credits herself for it. Suddenly, the daycare worker appears behind Anya, upset at her for running off. Anya says she had to use the bathroom, and as she gets dragged back to the daycare, she says that it might not have been the last bomb, which the lady interprets as Anya needing to go the bathroom again. And as Loid orders the crew to search the ship and to ask the SSS agents to stay on high alert for the rest of the voyage, sharks circle the assassins.

Inside the storage area, Yor and Matthew prepare the inflatable boat for Olka and the others' rendezvous. While Matthew gives Zeb instructions, Yor wishes Olka a great life on the other side and receives a hug as thanks. Despite Yor's protests because of her soiled hands, Olka has her hug Gram, saying that Yor's hands are the reason he has a future. Yor appreciates the gesture and embraces the child, remarking how warm he is. Before leaving, Olka says she will pray for Yor and her family to find peace and happiness. After she leaves, Matthew and Yor watch for the signal from the retrieval ship. Matthew sees Yor getting sentimental and snaps her out of her daze, reminding her that they are foot soldiers. After pausing for a moment, he relays to Yor that Loid and Anya requested to meet her the next day. Matthew assures her that he will be on the lookout for any more killers and tells her to do as her family asks, to consider it a reward for completing her mission. He then tosses Yor a handkerchief, telling her to put some ice on her face so her family will not notice the swelling. He also tells her to make sure they do not see her chest wound, which an embarrassed Yor says they will not.

After ensuring everything is secure, Twilight returns to the daycare as Loid to pick up Anya, who has fallen asleep. Picking her up, he thinks about how he had to abandon his family again despite resolving the crisis. Realizing what he just said, he reminds himself that his "family" is part of his mission and starts overthinking things all over again.