Gaia (Rewrite)

"The planet or the people?"

- Gaia motto

Gaia is a nihilistic, omnicidal cult and terrorist organization, one of the two primary faction in the visual novel and later anime, Rewrite. Gaia revere the Earth as their god and believe that it is inevitable that human actions will eventually destroy the environment. For this reason, Gaia seek to eradicate the entire human race, including themselves. In order to achieve this goal, Gaia intend to capture a mysterious entity known as the "The Key", essentially the embodiment of the "Will of the Earth" which takes the form of a girl named Kagari, and expose her to the "Song of Destruction", a song which has the impact of forcing the Key to cause all human life on Earth to cease to exist. Opposed to this are a military organization known as Guardian, who use both conventional military hardware and superhuman agents, with the goal of eliminating both Gaia and the Key.

While Gaia does have agents who carry firearms, unlike Guardian, they do not make widespread use of conventional military hardware. Instead, Gaia carries out most of its attacks using familiars, powerful creatures created from organic material using a forgotten magic. In order carry out covert activities, Gaia runs the Martel Corporation, an environmental technologies company, as a front, with summoners being recruited from members of the corporation who are receptive to the idea that humanity is nothing but a parasite on Earth.

Gaia is divided between two factions, the "Cult of the Holy Woman", led by Sakura Kashima, the "Holy Woman" of Gaia, who is bent on completing the omnicidal goals of the cult, and the executives of the Martel Corporation,, who reject the idea of destroying all human life, and instead intend to use the familiar creation process as a source of renewable clean energy, preventing the degradation of the planet.

The conflict between Gaia and Guardian came to a head in Kazamatsuri, Japan, with the two coming into open warfare as both scramble to locate the Key for their own goals. Caught in the middle is Kotarou Tennouji, a boy with the power to "rewrite" his body in order to make himself stronger, a group of Kotarou's friends, and Kagari, the Key herself.