Saint Seiya spin-offs [anime]
The list is arranged in the following way: main spin-off series are listed from the oldest to the newest; sequel seasons, if there are any, appear right under the first entry of the entry marking the first season of a certain spin-off series, regardless of whether these sequel seasons were released after or before other, but separate, spin-offs.
A Holy War, from ancient mythology, where the Goddess Athena and Hades have fought against each other while defending the earth repeatedly over the span of 200 years. The story takes place in 18th century Europe, 243 years prior to the original "Saint Seiya" Three small children, Tenma, Alone, and Sasha have all shared a very happy childhood together. Tenma who is quite aggressive but upstanding has moved to Sanctuary to become a saint. It is there that he is reunited with Sasha who is the sister of Alone and learns that she is the reincarnation of Goddess Athena. Alone, who is kind, gentle and loves painting was chosen for the body of enemy King Hades. Tenma eventually becomes a saint of Pegasus and engages in a fierce battle with his best friend Alone, the King of Hades. Pegasus Tenma, King Hades, and the Goddess Athena and through the twist of their 3 fates merge together which unfolds a prologue to the original Saint Seiya. (Source: TMS Entertaiment)
The sequel to Saint Seiya: The Lost Canvas - Meiou Shinwa.
The god of war and guardian of his namesake planet, Mars, was once sealed away by Seiya, but time has passed and his revival is at hand. Meanwhile, Saori Kido (Athena) is raising the boy Kouga, whose life Seiya saved, and he's been training every day to become a Saint in order to prepare for the coming crisis... Unaware of his destiny, when Kouga awakens to the power of his Cosmo hidden inside him, the curtain will rise upon the legend of a new Saint. (Source: ANN)
In the Underworld, during the fight against Hades, the 12 Gold Saints gave up their lives to destroy the Wailing Wall and allow Seiya and his friends to keep moving forward. Aioria and the Gold Saints, who should have disappeared, come back to life in this beautiful Earth full of light. How have they resurrected if they were supposed to be dead? While the big mystery remains, Aioria gets involved in a new battle and when his Cosmo exceeds its limits... a change happens to the Leo Cloth! (Source: AniChart/AniList)
The whole Sanctuary was misled into danger due to the civil war instigated by the Gemini Gold Saint, Saga. Our story begins right after the end of those events... This is a story of the girls protecting Athena. These are the records of love and fierce fights they meet while opposing destiny on their way to maturity... (Source: MangaSeven)