Episode list

Athena Saori watches over peace on Earth from Sanctuary and over young Kouga, until an invader causes commotion when he tries to kidnap Athena and the baby. Kouga is saved from certain death by the timely arrival of Gold Saint Seiya, who engages the mysterious invader, who reveals his identity as Mars. A new conflict begins as Seiya and Mars battle for the fate of Kouga, who years later, determined to live his life as he sees fit, challenges Athena.

Kouga is worried over the disappearance of Athena and frustrated for his failure to protect her and his mentor Shaina. Kouga is determined to master his Cosmo to rescue his goddess. Kouga departs to improve his mastery over Cosmo, later meeting Souma, the Lionet Bronze Saint, who teaches him about the elements of Cosmo. Eventually, Kouga and Souma are greeted by the challenge of Mantis Ordykia, one of Mars' henchmen, who puts their command over Cosmo to the test, an experience that strengthens their newfound friendship.

Kouga arrives to the Palaestra, guided by Bear Geki and his disciple Souma. There he is greeted by Saint apprentices, who first approach him with hostility. Also, Kouga meets Aquila Yuna, the young female Saint, who teaches him about his constellation and about the code that guides Saint women.

Ryuuhou, the son of the legendary Bronze Saint Dragon Shiryuu returns to the Palaestra after a short absence. The young Saint apprentices are subjected to a strict training to master their Cosmo element. Kouga is later forced to battle Ryuuhou in an intense element-to-element duel.

The young Bronze Saints are taken by Bear Geki to the Hell Camp, which is full of lethal traps composed of the elements of Cosmo. Those who survive the Camp are eligible to become Silver Saints. Kouga and Souma must work together to overcome the obstacles, all while Souma must avoid fellow Saint Argo's hostility and haunting memories of his past.

The Saint Fights tournament begins to much anticipation. The young Bronze Saints engage each other in fierce battles, putting their abilities to the test. Kouga manages to attain his first victory after a tense battle, thanks to Souma's advice; all while his fellow Saints remain intrigued about the seemingly enormous power of Orion Eden.

The Saint Fights tournament continues. Geki and Kouga bond more while the former teaches the young Saint about the mysteries of Cosmo, and reminisces about his defeat at the hands of Seiya years ago. In the tournament, Yuna triumphs over Delphinus Güney, and Kouga and Souma are pitted against each other in battle. As both are driven by strong motivations, Kouga draws more strength from the memories of Geki to narrowly achieve victory over his friend.

After his victory over Souma, Kouga senses a familiar Cosmo approaching, which he recognizes as Athena's. Rushing to meet her, to his surprise, he finds not Athena, but a frail, fearful young girl, whom Capricorn Ionia reveals to be Athena's true self. Ionia also reveals his true allegiance, to Mars, and reveals their plans to a shocked Kouga. After defeating the young Saint, Ionia leaves with the young girl, not before laying waste to the Palaestra, leaving it in ruins. Hours later, Kouga awakens in Mars' Saint Prison, to be greeted by the mysterious Wolf Haruto.

The malevolent entity known as Mars invades Sanctuary, accompanied by Capricorn Sonia and the young girl they claim to be the new Athena. Mars then completely obliterates the millennia-old Sanctuary, replacing it with his very own fortress. Meanwhile, Kouga manages to escape the Saint Prison with the help of Wolf Haruto, and after rejoining the other Bronze Saints, they set off together to invade Mars' headquarters, to rescue the young girl and to learn about the whereabouts of the true Athena.

The young Bronze Saints bravely invade Mars' Babel Tower, and succeed in rescuing the girl he claims to be Athena. She reveals to Kouga that her name is Aria. Sensing a threat approaching, Kouga dispatches Yuna along with Aria to avoid being recaptured, and together, the young Saints try desperately to buy time for their escape by facing the seemingly invincible Leo Mycene. In their darkest hour, a memory of Seiya deep in Kouga's heart brings them hope.

Yuna arrives with Aria to a small town. In Babel, Mars send Sonia (the Highest Martian), The Crow and Miguel of the Hound (Silver Saints) after them. Miguel guides the bad gang to the town where Aria and Yuna are in a church. Aria is left hidden and Yuna goes to fight. Right when Sonia is about to kill Yuna, one martian arrives asking Sonia to go back to Babel for a meeting of Mars with all the Saints. It is revealed that she killed Soma's father. She leaves and the Crow is beating Soma and Yuna. Kouga save them and help Yuna to deliver a fatal blow on Crow. In Babel: Yuna, Souma, Kouga, Ryuuhou and Haruto are blamed for Sanctuary destruction and taking Athena apart. So all the Saints are looking for them.

Kouga and friends continue their trek to take Aria to safety, when they're surprised by the attack of Hound Miguel. Overpowered by the merciless Silver Saint, the lives of the Bronze Saints are saved by the timely arrival of Andromeda Shun, the Saint of legend. Shun takes the youngsters to his village to rejoin Ryuuhou, afterward they're once again attacked by Miguel, whom they manage to defeat after a fierce battle. Later, the young Saints leave Shun's village to continue their mission.

Kouga and his friends continue their trek escorting Aria, until they come to a enormous whirlwind blocking their way. Meanwhile, Mars reveals his plans for his Tower that he deems the new Twelve Zodiac Temples, to his daughter and son, Sonia and Eden. A moribund Athena is also revealed by Mars, held hostage inside his tower. The young Saints decide to brave the whirlwind, managing to find a way inside it with the help of Yuna's command over wind. The traitorous Musca Fly tries to steal Kouga and Yuna's Cloths, only to be defeated in a fierce battle. Weary and alone, the young Saints find a new light of hope in the Pegasus constellation, which reveals a message from the legendary Seiya: "To you, I entrust Athena!"

The Bronze Saints reach a snow-covered land, which causes Yuna to reminisce about her days as a Saint apprentice and her mentor, the kind Peacock Pavlin. Sensing her mentor near, Yuna rushes to her encounter, only to realize Pavlin's allegiance is to Mars. Disciple and master engage in a fierce duel, later Yuna realizes it was Pavlin testing her, as her mentor reveals she is truly loyal to Athena Saori, and informs Yuna she is still alive and being held hostage by Mars. As Yuna prepares to rejoin her fellow Bronze Saints, both female Saints are surrounded by traitorous Silver Saints. Pavlin stays behind to cover Yuna's escape, seemingly losing her life.

It begins with our heroes walking through the woods as we find they are looking for the Earth Cosmo Core. Haruto appears, informing them that there is a town in front of them and a visitor behind them before he disappears once more, despite them asking him to stay. The "visitor" turns out to be Ichi, the older Saint from Palestra that was never able to use his powers correctly, and since that time the bronze saints found some surprises along the way.

Resuming their journey, the Bronze Saints eventually are tracked down by a small cadre of Martians. Running away from them to protect Aria, the teenagers reach a small but lively city, where Yuna fails to purchase a ship ticket as her purse fell during their escape. In order to rise money for ship fare, the Saints eventually find a job thanks to a kind old man who takes them to his wife's restaurant, where the youngsters prove they are not up to the challenge, much to the woman's chagrin. Later, the Martians are able to find the Saints and a fierce battle ensues. After achieving victory, the young Saints receive a resounding ovation from the crowd, and are given another chance at the restaurant.

The Bronze Saints arrive to a desert area, in which they meet a young girl from the people of Jamir, called Raki, who at first attacks them. After realizing they are Saints, by tradition connected to the people of Jamir, Raki takes them through a shortcut to avoid the desert areas, only to be greeted by the challenge of Kerberos Dorie, who seeks to capture Aria. Managing to defeat Dorie after a difficult battle, the Bronze Saints resume their journey, bidding farewell to their young benefactor, who later is joined by her mentor, Appendix Kiki, the former apprentice of the legendary Aries Mu, now a young man, who realizes the Bronze Saints are the new embodiment of hope in this era.

The Bronze Saints reach the Fire Ruins where Sonia finally comes across the murderer of his father, Hornet Sonia. Souma engages in a giant battle with her but his anger continues to lose his own focus and is unable to hit her. The battle proves fruitless until Koga manages to convince him to control his emotions. This allows Souma to finally hurt Sonia for real and she escapes beaten. After stopping the ruins, Souma realizes that he cannot stay with the team until he has settled things with Sonia and departs on his own.

After Souma's fateful battle, the Bronze Saints reach the famed Lushan fairylands in China, and are rejoined by Dragon Ryuuhou. Shortly afterward, the teens suffer the assault of the ferocious Perseus Mirfak, who turns them to stone, with the exception of Ryuuhou, who barely manages to defeat Mirfak, repeating the miraculous feat his father performed years ago, against Perseus Algol. Continuing their journey, the Saints trespass the Lushan waterfall with the help of the Libra Gold Cloth, only to be greeted by the challenge of a mysterious young man named Genmu, who takes the Libra Gold Cloth as his rightful heirloom, as he reveals himself to be the Libra Gold Saint.

Learning of Souma's defeat, Eden leaves the Sanctuary in order to find Aria himself. He eventually manages to track down Aria, who is accompanied by Kouga and Yuna. After easily defeating Yuna, Eden and Kouga have their long awaited fight. However, the Orion Bronze Saint easily dominates the battle despite Kouga's best efforts. Not wanting to see her friend hurt, Aria allows Eden to take her away.

Eden takes Aria away, and Aquila Yuna and Pegasus Kouga resume their journey, demoralized by their failure to protect their friend. Along the way, Yuna and Kouga separate, meanwhile Eden and Aria reminisce about the happy days they shared during their childhood. Kouga later meets a young man who first mocks his weakness, luring the teen Saint into a fight. Kouga later realizes the man to be the owner of an immense Cosmo, and turns out to be Cygnus Hyouga, one of the legendary Saints who protected Earth from great menaces many years ago. Hyouga manages to teach Kouga that to reach the true potential of his Cosmo, he must first believe in himself. After learning Hyouga's lesson, Kouga rejoins Yuna and both resume their way with renewed resolve.

Haruto, accompanied by Ryuhou, journeys to his home village in an attempt to come to terms with his past and regain his resolve. While there, Ryuhou learns that Haruto became a saint in order to follow the footsteps of his good friend and older brother figure Yoshitomi, the previous Wolf Saint. Yoshitomi had apparently been murdered by a masked silver saint in front of Haruto and the boy had been desperate for answers ever since. Haruto's father, despite his disapproval of Haruto becoming a saint, helps him gain back his fighting spirit by staging an assassination attempt on his son's life.

The young Bronze Saints decide to invade Mars' stronghold to rescue Aria. The teenagers carry out their plan, finding strong opposition in the enemy lines. During a moment of desperate need, the Bronze Saints receive the assistance of Lionet Souma, who rejoins them, stronger than before, thanks to further training under Unicorn Jabu, the Bronze Saint. The Saints reach Aria's chambers, only to find she has left. Not all is lost, as Souma is able to retrieve the Southern Cross Cloth's Clothstone, which belonged to his father Kazuma, after defeating Hornet Sonia, his killer.

Knowing of Aria's whereabouts, the Bronze Saints set off to invade the final ruins, followed by Ophiuchus Shaina, who joins them. Before parting, Shaina reveals to Kouga the secret of his origin, as well as Aria's. Inside the ruins, the Bronze Saints face the threat of powerful Silver Saints, while Kouga engages Orion Eden to free Aria. Shaina takes Aria and with her help, they are able to vanquish Mars' dominion over the area. As Mars' power vanishes, the ruins crumble, and the bronze Saints realize Mars' dark power is emerging from the debris of the structure.

Yuna, Ryuuhou and Haruto are transported to an unknown dark place and eventually reach a door, which they touch and are all transported to a world of memories. Yuna is on her hometown with her childhood friend before the war, Ryuuhou is on his childhood on Palestra along with his then friend Lynx Mirapolos and Haruto faces his own brother Yoshitomi. All three realize the world they are in is an illusion created by the darkness in their hearts and are at first hesitant to battle, but manage to overcome the darkness and reach the Core of Darkness.

Souma and Sonia are entrapped in an illusion of their past when Souma's father Southern Cross Kazuma was alive. Sonia is revealed to have been ordered by Medea to kill the Silver Saint for he was an open leader against the Martians. Hesitant on her mission she departs and faces Kazuma, as Souma also witnesses the past event. Sonia is first easily pushed away by Kazuma who tells her that her fists are made to protect those she care for, but when she thinks of her family, Sonia bursts into a rage and stabs Kazuma from the back. It is revealed then that after the murder, she was mentally tormented at the atrocity. Sonia seeing her own hesitation then sees her own darkness as Mars appears and deems her unworthy of being at his side. Souma then appears and saves Sonia from the illusion as he wants to settle things himself. After defeating the darkness the two reach the Core of Darkness. Eden, Aria and Kouga all face their respective darkness as well. Eden faces the guilt from an illusion of Aria scolding him for keeping her prisoner, Aria is confronted by her own darkness which claims she is just a tool, while Kouga's darkness reveals the true nature of his Cosmo to be Darkness.

Eden sees his own darkness as Aria is constantly being used by Mars without the power to do anything about it, before being confronted by his parents about his destiny for the new world. Accepting whatever punishment that would be suitable for his errors, Eden allows himself to succumb to his darkness. Meanwhile, tormented by her own darkness of being used as an instrument of destruction Aria resolves to use her Light to protect those who need her, in doing so she reaches both Eden and Kouga from their darkness and all reach the Core of Darkness. Aria then along Kouga obtain the Core of Darkness. Mars himself then appears intending to take Aria for himself, but is faced with the opposition of the Bronze Saints and Aria herself who openly defies Mars. The Bronze Saints are easily defeated even after using their strongest attacks, but Aria resolves to fight and her Cosmo then resonates with the Elemental Cores merging together into a staff with which Aria can protect the Saints from Mars' Darkness as well as empower them. Mars is pushed back by Aria's light but then throws an energy lance and impales Aria. Mars then takes the staff along with Aria's light before departing with Sonia and a horrified Eden. A dying Aria asks the Saints to stop Mars and save the world, before being transported out of the Ruins with Aria's body falling into the abyss.

Seiya retells the latest events that have happened thus far from Kouga's birth to Aria's death at the hands of Mars. Once finished with the recap, Mars uses the staff of Aria to create a new Sanctuary, stretching up towards the sky from the Tower of Babel. At the Pope's Chambers, Sonia approaches Mars, announcing that the Gold Saints have gathered.

After briefly mourning the death of Aria, the Bronze Saints prepare to enter the Twelve Zodiac Temples. They are greeted by Aries Kiki, who explains the situation and how they are to proceed. Taking him for an enemy, Kouga attacks Kiki, to what he responds by restoring the Pegasus Cloth and also revealing to them the crucial secret of the Seventh Sense. Realizing Kiki is not an enemy, Kouga proceeds to the Temple of the Golden Bull, where he is challenged by its guardian, Taurus Harbinger, and a deadly battle ensues. Meanwhile, Kiki restores the remaining Cloths, and stays behind the teenagers, to battle alone against a large group of Martians.

After the defeat of Kouga at the hands of Harbinger, the remaining Bronze Saints engage him in battle, meeting with utter defeat. Harbinger reminisces about his difficult childhood and what drove him to a life of violence, to become the strongest and eventually a Gold Saint. Managing to recover after witnessing the defeat of his comrades, Kouga attacks Harbinger with a single blow imbued with all the power of his Cosmo. Much to his surprise, Harbinger emerges unscathed and his comrades have vanished.

Dragon Ryuhou arrives to the Temple of the Twins, being greeted by a strange, peaceful atmosphere and talking animals. Gemini Paradox, the guardian of the temple, gently welcomes the young Saint and exposes to him her motives for her allegiance to Mars, and reminisces about her past. Disagreeing with Paradox's amoral perspective, Ryuhou engages her in battle, managing to overpower the gentle Paradox. Much to his surprise, she emerges full of hate and with no trace of her previous loving personality. Meanwhile, Aquila Yuna arrives to the Cancer Temple.

Yuna arrives at the House of Cancer, and she is greeted by the deathly atmosphere of the gates of Praesepe. The guardian of the House, Cancer Schiller, engages her in battle, reminiscing about his past and motives for his allegiance to Mars. Aiming for Yuna's utter defeat, Schiller tries to break her morale by toying with her psyche, having Yuna fight her deceased friends Arné and Komachi. Meanwhile, Kouga continues his battle with Harbinger. After another clash between the two Saints' greatest techniques, Kouga heads towards the exit. Admiring his determination, Harbinger lets Kouga go. Back at the House of Cancer, to avoid fighting her friends, Yuna tries to attack Schiller directly. However, she is hit by Schiller's ultimate move Praesepe Underworld Waves, which sends Yuna to a dark and barren land.

Koga arrives at the Gemini Temple. He and Ryuhou join forces in order to defeat Gemini Paradox. Despite their best efforts, the two of them are outclassed by the more experienced warrior, especially when her darker half comes out to fight. Incensed by Paradox's selfish nature, Ryuhou manages to awaken the Seventh Sense and pull out a desperate win at the last minute. Ryuhou and Kouga the head off to the Cancer Temple.

Because of Schiller's Praesepe Underworld Waves, Yuna leaves the earthly plane and finds herself in the deathly Hill to the Land of Spirits. Terrified by the sight of the souls of the deceased and visions of her sordid past, Yuna cowers until the arrival of Kouga, who suffered her same fate, and losing his temper due to Schiller's mockery of Aria's death, Kouga is consumed by the Darkness Cosmo inside him. Managing to calm down Kouga, Yuna engages the Cancer Gold Saint in battle once again, and drawing from her bonds to Aria and her comrades, she finally finds the strength to miraculously awaken the Seventh Sense, overpowers his Sekishiki Meikai Rinbu with her Aquila Shining Blast, and toss Schiller into a lake of boiling blood, killing him.

After Cancer Schiller's defeat, the Bronze Saints prepare to proceed further into Sanctuary. Meanwhile, Orion Eden reminisces about his late friend Aria. The grief-stricken Bronze Saint begins to question Mars' motives and their legitimacy, going as far as to challenge his master Leo Mycenae because of his loyalty to Mars. Mycenae and Eden engage in unequal combat to prove their conviction.

After leaving Eden, Mycenae returns to guard his House, where Haruto and Souma arrive promptly. The young Saints find themselves to fight their way through the House of Leo, but the ferocious Mycenae proves to be an almost impossible foe to overcome, even when the two teenagers fight him together and neutralize his King's Roar technique. When he unleash his King's Emblem, Haruto risks his life by stopping Mycenae's final attack. Souma retaliates with a Lionet Bomber powerful enough to crack one of the shoulder pads on his Gold Cloth. The fierce determination of the young Saints makes Mycenae reminisce about his past and his pupil Eden, and deeming them true Saints, allows them to go through the House of Leo.

Upon arriving at the next temple, Haruto and Souma are confronted by Virgo Fudo, a gold saint whose cosmos surpasses that of all the Gold Saints in the earlier temples. Yuna, Kouga, and Ryuhou join the battle in time to save their friends from a crushing defeat. But even the combined powers of the five Bronze Saints is no match for Fudo. When all hope seems lost, Eden arrive at the last minute and protects them from one of Fudo's techniques.

Eden takes over the fight against Fudo after blasting Kouga and the others out of the Virgo Temple. Following a desperate battle, Eden manages to defeat the Virgo Gold Saint when he awakens the seventh sense. At the same time, the other Bronze Saints attempt to use the opening he gave them to go to the Libra Temple. Unfortunately, they are confronted by Tokisada, the new Aquarias Gold Saint and the man who killed Haruto's brother. His apparent ability to control time makes him a powerful adversary and Kouga is defeated with little effort.

Libra Genbu interferes in the battle between Tokisada and the Bronze Saints, teleporting everyone to his temple. To the shock of the Bronze Saints, Genbu takes over the fight and declares his loyalty belongs to Athena, to Saori Kido. While Tokisada is a powerful warrior, Genbu wins the fight. In a desperate gamble, Tokisada attempts a powerful technique to take the Bronze Saints with him but only manages to suck in Ryuho and Haruto. Koga, Souma, and Yuna proceed to the next temple with Genbu's blessing.

The Bronze Saints finally arrive at the House of Scorpio, where they are confronted by Sonia, who has been given the Scorpio Gold Cloth by Medea. Tasked to teach Eden a lesson or eventually kill him, Sonia attacks and easily overpowers the Bronze Saints. Proceeding to kill Yuna, Sonia is challenged by Souma who sends his friends ahead. Following a violent battle, Sonia is consumed by the Gold Cloth due to not mastering the massive Cosmo. Despite awakening his Seventh Sense, Souma fails to save Sonia, and she is killed by her own failed technique.

Eden arrives at the House of Scorpio, watching Souma right next to Sonia's body. Souma apologizes to Eden before moving to catch up with Kouga and Yuna. Meanwhile, Haruto and Ryuuhou awaken at the End of Time, finding themselves confronted by Tokisada, whose time-manipulating powers have regained their strength after his fight against Genbu. From the moment the battle begins, Tokisada easily gains the upper hand against the two Bronze Saints' combined strength. At the same time, Kouga and Yuna reach the House of Sagittarius, supposed to be protected by Seiya. Upon entering, they realize the House indeed is empty, due to Seiya missing. Inside, they find the original testament written by Aiolos. Acknowledging both Aiolos and Seiya as righteous Saints, Kouga and Yuna continue with a renewed resolve to save their goddess. Mycenae, now aware of the true culprit behind this battle, confronts Medea and prepares to kill her. However, her brother and Pisces Gold Saint, Amor, steps out of the shadows and kills Mycenae with a massive amount of Darkness Cosmo. In the End of Time, Haruto finally awakens his Seventh Sense and defeats Tokisada, leaving him to die as he and Ryuuhou are teleported back to the House of Libra.

Kouga and Yuna reach the House of Capricorn where they meet Ionia and learn from him his reasons for betraying Athena. Kouga attacks the former Headmaster of the Palaestra, but is once again immobilized by his Domination Language technique, and his Darkness Cosmo is brought out. Before Yuna is able to help Kouga keep the Darkness Cosmo at bay, Ionia buries her in a rubble of books, facing Kouga alone. However, after succeeding to repress the Darkness Cosmo in his heart, Kouga awakens his Seventh Sense and finally kills Ionia with the legendary Pegasus Comet Punch.

The Bronze Saints finally arrive to the House of Pisces, guarded by the ruthless Amor. After separating Kouga and Yuna from the others, Amor summons Mars' strongest warriors, the Four Heavenly Kings to fight the others. While stating that the Heavenly Kings are stronger than the Gold Saints, Amor immobilize Yuna, forcing her to watch her friends being attacked without resisting. Kouga, the only one capable of attacking, is restrained by Amor's Arrested Judgement, a special attack that can only be broken by Darkness Cosmo as part of Medea's plan to have him unleash the cursed power he keeps dormant within him.

Kouga defeats one of the Heavenly Kings in one hit before he manages to once again keep his Darkness Cosmo due to him having reached his Seventh Sense earlier and Yuna calling out to him. Sending him ahead, Yuna engages Amor while Souma, Ryuuhou and Haruto engage the remaining three Heavenly Kings, using the last bit of strength they have left in order to finally defeat them. Leaving the rest to Kouga, they collapse to exhaustion. Amor decides to fight Yuna, but is interrupted by Eden who has arrived as well. Following a short fight, Yuna asks Eden to go onward and help Kouga while she handles Amor.

Kouga finally reaches Mars' location, determined to stop him. As the War God deflects his attacks and counterattacks, Eden arrives in time to save Kouga. Mars then reveals to the true story from the days when he was known as Ludwig, a normal human who sought revenge for the death of his beloved wife, Misha. He deflects Eden's attacks before removing his mask, revealing himself as a human no longer.

Sending Kouga ahead Eden awakens his Seventh Sense and challenges Mars, immobilizing him with his Cosmo. Eventually, while Kouga struggles to retrieve Aria's staff at the top of the Sanctuary, Mars breaks free and grievously wounds Eden, temporarily defeating him. Pursuing Kouga, Mars easily shrug off any attack from the Pegasus Saint until Eden finally catches up to the two. Bringing their Cosmos to the limit, Kouga and Eden finally defeat Mars together and have Ludwig return to his senses. However, just as Ludwig is about to retrieve Aria's staff to prevent Earth's Cosmo from being drained, the time limit expires and the world's destruction begins, killing Ludwig.

As Earth's Cosmo is transferred to planet Mars, Medea drains the darkness Cosmo from Ludwig's body and transfers it to Amor, before she departs to Mars. After revealing all the suffering and prejudice he has suffered along with his sister during his childhood, Amor attacks Kouga. Eden joins Kouga against him, but when Amor transfers the battlefield to Mars, where his powers are increased to the same level as Mars possessed, Kouga finds on it an opportunity to retrieve Aria's staff and stop Earth's destruction.

After infusing the Darkness Cosmo in Kouga's body, Amor finds out that he was betrayed by his sister from the beginning and swears to kill everyone including her, knocking out Eden in the process. Meanwhile on the Earth, Kiki, Harbinger, Fudo, and Genbu use their Cosmos to send Kouga's friends to Mars. As he finally reunites with Saori, Kouga is overcome by the Darkness Cosmo and possessed by the God of Darkness, Abzu, who kills Amor in one single blow. As the possessed Kouga now proceeds to kill Athena with his own hands, his friends try to have him return to his senses without success, until Eden stands in his way.

Eden tries to stop Abzu with no success until he gets the chance to obtain Aria's staff to confront him. Medea tries to dissuade him, but he refuses to comply and reclaims the staff by force. With Kouga's friends failing to get him back to normal despite everyone awakening their Seventh Sense, Eden eventually returns with the staff to the battle, just to find it destroyed by Abzu. Just as Eden is about to be dealt the final blow by the God of Darkness, Medea stands to protect her son, sacrificing herself for him. However, Eden is still dealt a heavy attack while the shards of Aria's staff fall down a cliff.

Yuna, the only one left standing after Abzu's terrifying onslaught against Kouga's friends, is encouraged by Athena to fight against Abzu in order to bring Kouga back. However, all her attempts fails, gaining her darkness wounds for each attempt. Just then, the fragments of Aria's staff combined with Kouga's friend's Cosmos awaken Seiya, who has been trapped in the depths of the red planet all this time, waiting for a chance to stop Abzu's plans. The Gold Saint confronts Abzu and manages to drive him from Kouga's body with aid from Yuna. The God of Darkness then flees away with Athena, and with Kouga's Pegasus Cloth shattered, Seiya lends the Sagittarius Cloth to him and the young Saint rushes after Abzu to rescue her.