, sometimes abbreviated as LOTGH, LOGH, LGH or in Japanese (and also depicted as Heldensagen vom Kosmosinsel in the anime intro), is a series of epic science fiction novels written by Yoshiki Tanaka. Taking place in the distant future, the series follows two interstellar states – the monarchic Galactic Empire and the republican Free Planets Alliance – that are embroiled in a never-ending war. The story focuses on the exploits of rivals Reinhard von Lohengramm and Yang Wen-li, as they rise to fame and power in the Galactic Empire and the Free Planets Alliance, respectively.

An anime adaptation of the novels, produced by Kitty Films, was produced from 1988 to 1997. There is also a manga based on the novels, with art by Katsumi Michihara. In addition, there are several video game adaptations, with the most recent PC release in 2008 being a real-time strategy game. The series did not receive an official English release until 2015, when North American anime and manga distributor Viz Media announced they had acquired the license for the novels. On the same day, North American anime licensor Sentai Filmworks announced their license to the anime; the anime was later released on Hidive in 2017. A second anime adaptation by Production I.G was released in 2018.

Setting In AD 2801, the Galactic Federation is formed, resulting in political power moving away from the planet Earth (now named Terra) and the Space Era calendar replacing the Gregorian calendar, with 2801 AD now being SE 1. Rudolf von Goldenbaum, an ex-admiral turned dictatorial politician, is elected to power. After declaring himself Emperor Rudolf I, absolute monarch of the renamed Galactic Empire, he restarts the calendar again, beginning the Imperial Calendar on SE 310/AD 3110. His regime adopts extreme policies, including the suppression of any opposition and the extermination of anyone deemed "too weak" (such as the disabled and the poor), which is carried out until his death in IC 42/SE 351/AD 3151. He also moves the capital of the Empire to the planet Odin, the third planet in the Valhalla system.

In IC 164/SE 473/AD 3273, a group of serfs in the Altair Starzone manage to escape captivity and make "the Long March of 10,000 Light-Years" into the Sagittarius Arm to escape the Galactic Empire, located within the Orion Arm. These people set up the Free Planets Alliance, a democratic republic which uses the Space Era calendar, founding the Alliance in SE 527/IC 218/AD 3327 on the planet Heinessen. In SE 640/IC 331/AD 3440, the first battle between the Empire and Alliance occurs, resulting in a major Alliance victory. The two realms have been at war ever since.

A third realm is also set up, the Dominion of Fezzan, a planet-state (city-state on a galactic scale) with connections to Terra. It technically remains a part of the Empire and pays tribute, but also maintains a relationship with the Alliance. Ruled by a domain lord called the "landsherr", Fezzan gains power by acting as both paragon and trickster, providing the only link between the Empire and Alliance, while simultaneously playing the two sides against one another.

Plot The story is staged in the distant future within the Milky Way Galaxy, starting in SE 796/IC 487/AD 3596. A portion of the galaxy is filled with terraformed worlds, inhabited by interstellar traveling human beings. For 150 years, two mighty space powers have intermittently warred with each other: the Galactic Empire and the Free Planets Alliance.

Within the Galactic Empire, an ambitious military genius, Reinhard von Müsel, later conferred the name Reinhard von Lohengramm, is rising to power. He is driven by the desire to free his sister Annerose, who was taken by the Kaiser as a concubine. Later, he wants not only to end the corrupt Goldenbaum dynasty, but also to defeat the Free Planets Alliance and unify the whole galaxy under his rule.

In the Free Planets Alliance Star Fleet is another genius, Yang Wen-li. He originally aspired to become a historian through a military academy, and joined the tactical division only out of need for tuition money. He was rapidly promoted to commodore because he demonstrated excellence in military strategy in a number of decisive battles and conflicts. He becomes the arch-rival of Reinhard, though they highly respect one another. Unlike Reinhard, he is better known for his underdog victories and accomplishments in overcoming seemingly impossible odds and mitigating collateral damages and casualties due to military operations.

As a historian, Yang often predicts the motives behind his enemies, narrating the rich history of his world and offering commentary. One of his famous quotes is "There are few wars between good and evil; most are between one good and another good."

There is a third neutral power nominally attached to the Galactic Empire, the Fezzan Dominion, a planet-state that trades with both warring powers. There is also a Terraism cult, which believes that humans should go back to Earth, gaining popularity throughout the galaxy. Throughout the story, executive political figures of Fezzan, in concert with the upper-hierarchy of the Terraism cult, orchestrate a number of conspiracies to shift the tide of the galactic war to favor their objectives. The name "Fezzan" is a reference to Fezzan, a region of modern Libya that played an analogous historical role to the one in the anime.

Christopher Farris of the Anime News Network wrote that the novels focus on "personal matters of the main players" instead of being "rote historical accounts", while the 1988–1997 anime series focuses on "the big picture of the war", with multiple characters chronicled, and the 2018 series focuses "only on the major plays by our two main actors to fit within its shorter, more focused format."

Media

Novels The series proper is based on a ten-novel series written by Yoshiki Tanaka, as well as a number of other shorter stories set in the same universe, collected in five Legend of the Galactic Heroes Gaiden volumes. It won the Seiun Award for "Best Novel of the Year" in 1988.

On July 2, 2015, Viz Media had announced that it had licensed the novels for release in North America under their Haikasoru imprint. The company had only initially licensed the first three novels, but stated that it would license more if sales were good. The first novel, Dawn, was released on March 8, 2016. The company eventually licensed and released all the novels, and the final volume, Sunset, was released on November 19, 2019. The novels were translated by Daniel Huddleston, Tyran Grillo and Matt Treyvaud. The first three novels were also released as audiobooks.

Anime My Conquest Is the Sea of Stars is the first animated adaptation of Yoshiki Tanaka's Legend of the Galactic Heroes series of novels. It was originally released in Japan on February 6, 1988. The film chronicles the first combat encounter between Reinhard von Müsel (who later adopted the Lohengramm name) and Yang Wen-li, the two primary protagonists of the series. The main original video animation (OVA) series followed only months later, picking up where this film left off.

Legend of the Galactic Heroes

is the second and longest-running animated adaptation of Tanaka's series of novels. It was released in direct home video installments during four separate periods between December 1988 and March 1997. The OVA comprises 110 episodes. It was later shown on television and has seen multiple releases on both DVD and Blu-ray formats. It is also known by the (grammatically incorrect) German title Heldensagen vom Kosmosinsel, which is used in its opening credits.

Golden Wings is the third animated adaptation of Legend of the Galactic Heroes, adapting the short story of the same name. It was originally released on home video in Japan in October 1992, then released in cinemas in December of that year. Its art style is notable in that it follows the art style of the Katsumi Michihara's manga adaptation rather than the other animated works. Its ending theme song is "Futari Mita Yume ~Two of Us~", performed and composed by Hiroyuki Matsuda, written by Gorou Matsui, and arranged by David Campbell.

Overture to a New War is the fourth animated adaptation of Tanaka's novels. It was originally released in Japan on December 18, 1993. It expands upon the events covered in the first two episodes of the 1988 OVA series.

Gaiden is the fifth animated adaptation (counting films) of Tanaka's novel series. It was originally released in Japan between February 1998 and July 2000. It served as a prequel to the main series, adapting Legend of the Galactic Heroes Gaiden, or side stories, series of novels, (then) uncollected short stories, and also original stories.

Series 1, released from February to September 1998, consists of adaptations of the short stories "Silver-White Valley", "Dream of the Morning, Song of Night" and "Disgrace" (later included in the Golden Wings collection), and the novel A Hundred Billion Stars, a Hundred Billion Lights.

Series 2, released between December 1999 and June 2000, consists of adaptations of the novels Spiral Labyrinth and part of The Star Crusher ("The Third Tiamat Battle"), as well as the original stories "The Mutineer", "The Duellist", and "The Retriever".

Die Neue These started being produced by Production I.G during 2017. Shunsuke Tada directed the series and Noboru Takagi supervised the scripts. Yoko Kikuchi, Iwao Teraoka, and Katsura Tsushima designed the characters. The mecha designs by Naoyuki Kato were drafted by Atsushi Takeuchi, Shinji Usui, and Shinobu Tsuneki. DMM Pictures, Shochiku, and Tokuma Shoten were credited with production of the anime, alongside Production I.G. The anime stars Mamoru Miyano as Reinhard von Lohengramm, Kenichi Suzumura as Yang Wen-li, and Yuichiro Umehara as Siegfried Kircheis. The series premiered from April 3 to June 26, 2018, and ran for 12 episodes. The opening theme is "Binary Star" by SawanoHiroyuki[nZk]:Uru, and the ending theme is "Wish" by Elisa.

A second season, , premiered in Japanese theaters as three films, each with four episodes, in 2019. The films premiered on September 27, October 25, and November 29, 2019, respectively. The ending theme for the films is "Tranquility" by SawanoHiroyuki[nZk]:Anly. It was broadcast on TV with a reairing of the first season in 2020.

A third season, , premiered in Japanese theaters as a three-part film series in 2022 on March 4, April 1, and May 13, respectively. The opening theme for the films is "dust" by SennaRin, while the ending theme is "melt" by SennaRin.

A fourth season, , premiered in Japanese theaters as a three-part film series in 2022 on September 30, October 28, and November 25, respectively.

A fifth season was announced in November 2023.

English-language release An English dub pilot was produced by Outis Productions and Ocean Productions in the late 1990s, at the request of Tokuma Shoten. The dubbed episodes were the episodes 51 and 52, and were shown at several anime conventions including Anime Expo. The series was not picked up at that time.

On July 2, 2015, Sentai Filmworks announced their license to the anime series at their panel at Anime Expo, and later commented that they hoped to create the "definitive release". A limited edition box set with only 1,000 produced was released in August 2018 and cost $799. The set sold out in May 2021.

On June 20, 2017, Sentai Filmworks announced the streaming release on Hidive's anime streaming service starting the same day. It left streaming in mid-2024.

Die Neue These is streamed in North America by Crunchyroll.

Manga