For Mireille's personal sidearm, Mashimo wanted a gun with "a more modern image", therefore the production staff decided on the Walther P99. After considering several compact pistols, including the Walther PPK and the Glock 26, for Kirika's personal sidearm, the Beretta M1934 became the weapon of choice, because of its "classic, European feel" that suited the premise of the series' story. Because of the organization's premise, European guns were chosen for the members of Les Soldats. The assassins in black suits that are sent after the protagonists throughout the series all carry the SIG Pro 2340, which at the time of production was the newest model of its line, while other members were given increasingly older weapons, depending on the member's rank.