A thousand years into the future, Earth has been destroyed by powerful aliens known as Gauna. Although mankind has fled into space, the giant spaceships they now call home are still constantly being targeted by the strange creatures. Piloting mobile weapon units called "Gardes," humanity is able to take a stand against their adversaries by destroying their cores, preventing the monsters from regenerating their protective shell of placenta. Within the vessel Sidonia, a boy named Nagate Tanikaze surfaces from its depths for the very first time in his life. With an incredible amount of time clocked into pilot simulators during his isolation deep within the ship, he quickly proves to be an indispensable asset to humanity's defense force. With the opportunity to pilot the legendary Garde Tsugumori, he fights to protect Sidonia from a grim demise. [Written by MAL Rewrite]

Sidonia no Kishi won the 39th Kodansha Manga Award in the general category in 2015. It also won the 47th Seiun Award for Best Comic in 2016. The series was published in English as Knights of Sidonia by Vertical, Inc. from February 5, 2013, to April 26, 2016. It was also released in Italian by Panini Comics under the Planet Manga imprint from October 22, 2011, to April 28, 2016; in Polish by Kotori from April 8, 2016, to March 19, 2019; in Brazilian Portuguese by Editora JBC from April 9, 2016, to March 21, 2018; in Spanish by Panini Comics from November 2, 2017, to August 27, 2020; and in Russian by XL Media from December 22, 2017, to December 2023.