Knights of the Zodiac (Complete Edition)

In ancient times, the Titan Cronos (son of Uranus the sky and Gaia the earth) and his wife Rhea gave birth to six children. Five of them were swallowed by Cronos, and only one was saved, Zeus, hidden from Cronos by Rhea. Upon reaching adulthood, Zeus forces his father to vomit the other five gods. Zeus, along with his brothers and sisters, decide to battle the Titans for control of the universe. Cronos and the other eleven Titans lose the battle and are sent to Tartarus. Thousands of year later, in Greece, the Pope visits the room of the recently reincarnated infant Athena, with a golden dagger. Before he can kill her, the Gold Saint Saggitarius Aiolos saves her, and unmasks the Pope. Aiolos, horrified, flees. The Pope declares him a traitor to the Sanctuary, and has Capricorn Shura murder him. This causes his younger brother, Leo Aiolia, to grow under the shadow of his "traitor" brother, suffering from all manner of abuse and scorn. This leaves him with a grudge against the Gold Saints and Sanctuary as a whole, which causes the Pope and most of the Sanctuary to distrust him. To make things worse, the enemies of God Zeus, the Titans, are revived and begin to seek vengeance against him and the Sanctuary. This marks the start of Aiolia's story and the battle of the Gold Saints against the Titans. (Source: Wikipedia) Note: The chapter count includes 87 regular chapters, 20 "Gaiden" extra chapters, and an epilogue that was omitted from collected volume releases.

This manga tells the story of the previous Holy war of the universe of Saint Seiya, taking place in the XVIII century, 250 years before the original manga. The story centers on the relation between Tenma, the Pegasus Saint and his beloved friend, Alone, who would eventually become his greatest enemy, Hades. (Source: Wikipedia)

The story follows Gold Saint Sagittarius Aiolos protecting baby Athena. (Source: Anime News Network)

The Champion RED magazine teases the story as a prequel to Saint Seiya, with a conspiracy brewing under the shadow of rival brothers Saga and Kanon, and a new mystery being unraveled. (Source: Anime News Network, edited)

In 1990 (previously 1986), in Elysion; the five Bronze Saints Seiya, Hyōga, Shun, Shiryū and Ikki, having wreaked havoc in the Underworld's army and succeeding in resurrecting the God Cloths, engage the god Hades in a final duel to the death. During the battle, Hades remembers that he has seen Seiya's face before and comes to the conclusion that he faced him before. He thus starts reminiscing about his previous host body, and the story starts 247 years prior, in the 18th century. The protagonist, the Pegasus Saint of this era, is an orphan who is best friends with a boy named Alone, the host of Hades. Former Bronze Saints Dohko and Sion, two prominent characters in Kurumada's original manga as the sole survivors of the holy war of that century, have just been promoted to Gold Saints and eventually the two duos meet. Note: Includes three extra chapters.

The story takes place between Poseidon and Hades. Athena and their knights must fight against powerful giants who lives on mount Etna, on the Italy.

This story takes place before the beginning of the war with Poseidon's army, focusing on Kanon's perspective of the events.

Chibi style parody of Saint Seiya.

In the wake of a space-wide civil war instigated by Saga–the Gemini Gold Saint–a new team of Saints comes together with the goal of protecting their goddess Athena. This first all-woman team of armored warriors, powered by the Zodiac, will use their cunning, strength, and compassion to defend their worlds and oppose their very destinies. Mangaka Chimaki Kuori is also known for working on manga for Gundam Seed and the Persona series. (Source: Seven Seas Entertainment) Note: Includes four extra chapters. One chapter was not included in the volume releases.

Shouichirou was just another high school student. Now, he's Wyvern, one of the dreaded Judges of the Underworld, chosen to battle against the forces of Athena in a war that transcends life and death. When an unexpected ambush during a school trip sends Shouichirou and his classmates into the land of the dead, they are thrust into a fierce struggle between the gods and their warriors. The mysterious forces of Hades have already begun their assault, and Shouichirou's destiny is forever altered. But he's not alone—Cattleya, the reincarnation of Athena herself, fights to defend the living, as shocking truths about a darker conspiracy threaten everything they know. (Source: Titan Manga)

The sanctuary is exhausted after the battle against the Lord of Darkness Hades. In the absence of Seiya and the others, the land was about to meet its end in the wrath of the goddess Nemesis! At that moment, the Emperor of the Sea Poseidon awakens to Hades' call and, together with the Seven Marina Generals challenges Nemesis and their Heroic Souls who serve her in battle!

Mariya is one of the students about to begin attending Graad Academy. However, during the entrance ceremony, she witnesses an attack by a group of dreadful warriors that seem to be out of this world. When the situation descends into chaos, a mysterious and unexpected ally appears to stand in her defense...

The Mythology is the plan of the gods. A perfect story created by them, that should never be changed in any way. However, there where mortals who altered the Mythology with their own hands. Pegasus Seiya, Ryuji Takane, Kojiro of the Fuuma, and many others were brought to this prison, where they're going to be erased to restore the Mythology to its original course... But they're not going to disappear without fighting for their existence.