riding crop or a blast from her void explosion spell. When Louise forms her familiar contract with Saito, the runes "" are inscribed on Saito's left hand. The runes signify Saito's status as , a legendary familiar with the ability to excel in the use of any object crafted as a weapon simply by touching it; he can wield melee weapons and war machines that include a World War II A6M Zero Fighter; Tiger I (light novel only); however, it does not extend to weapons crafted for ornamental purposes. As the series progresses, it is revealed that a Gandálfr exists to protect a Void Mage as they cast their spells. After being mortally wounded from fighting Albion's army at the end of the second anime season, Saito is revived by Tiffania, but he loses his Gandálfr power until Louise re-summons him and renews his contract. He is then knighted by Henrietta and made vice-captain of the student Undine Knights led by Guiche. In the fourth anime season, after Saito becomes the lord of the region called De Ornielle, Saito becomes not just Louise's familiar, but also Tiffania's familiar, gaining a new familiar ability known as that allows him to boost Void magic to the user he touches (his life-force is drained every time he uses this ability). This ability was depleted after fighting the Ancient Dragon, according to Derflinger. When they fought the Ancient Dragon, and fail to destroy it the first time, Louise sends Saito back to his world using the World Door. Later, Saito manages to come back through a solar eclipse with a F-2A Jet Fighter, and they then destroy the Ancient Dragon permanently. Saito's weapon is a cheap sword Louise bought, which turns out to be the talking sword Derflinger (Derf) (). Derflinger later reveals that he was once the partner of Gandálfr from 6,000 years ago, and that it was no coincidence that Saito and Derflinger are now partners. Derflinger has the ability to absorb spells. He was destroyed in Saito's first confrontation with the Ancient Dragon, but returns as he was actually dormant inside of Gandálfr. Saito is named after Gennai Hiraga, who was a Japanese scientist from the Edo period, and his name is written as "ability man". At the end of the fourth anime series, Saito and Louise are married. Capsule Computers cited his sarcasm as his "most well performed moment" and