List of Ronin Warriors episodes

In the streets of New York, Sage's Armor of Halo kills gang members attacking it and the bystanders, while the mysterious figure Shikaisen congratulates it. Meanwhile in Japan, Kento, having won $3 million in a lottery, throws a birthday party for Ryo. Ryo notices that Sage is missing from the party, and then a news broadcast of the killings caused by the Armor of Halo. The next day, Ryo decides to fly to New York and is joined by Cye and Kento, who were informed by Mia. Rowen, Mia, and Ully arrive in New York first; Rowen decides to find the photographer who took the picture of the Armor of Halo, while Mia and Ully decide to look at the university that contacted Sage to find his whereabouts. However, Shikaisen attacks the airplane, and they believe that they are being sent a message. Rowen finds that the photographer has been killed, and his sister Runa believes Rowen killed him. At Kento's uncle's restaurant, Rowen meets with Mia and Ully, who say that the university had no record of ever reaching out to Sage and deduce that Sage was lured away for a mysterious reason. As Ryo, Kento, and Cye arrive, Rowen is attacked by Runa to avenge her brother, but is saved by Ryo. Ryo then has a dream that Sage is being manipulated by Shikaisen, and upon awakening decides to follow the hunch. Rowen and Kento find the Armor of Halo acting on its own accord and attacking bystanders. Ryo and Cye arrive, but Shikaisen reveals himself, telling them that he has Sage and will soon acquire the other armors. The Ronin Warriors are attacked by the military and decide to split up. As Ryo and Rowen flee, they are met by Runa, who tells them they can tell her the story later and to follow her.

Ryo and Rowen follow Runa as they flee the police. Rowen recognizes her as the girl who tried to kill him earlier, as she had once believed them to be murderers. Mia and Ully are attacked in Kento's uncle's restaurant and taken hostage. Runa leads Ryo and Rowen to safety underneath the water purification plant. As Runa mourns the death of her brother, they are joined by Kento and Cye. Meanwhile, Shikaisen meets with his henchmen in Los Angeles, where Mia and Ully are held. His scientist explains that they have been using a computer to use Sage's armor, while using a mind disruptor on Sage to get him to pilot the armor and unlock its full potential. They use the power to attack a parade of people in Little Tokyo. The remaining Ronin Warriors resolve to face Shikaisen and to never split up again; despite his misgivings, Ryo allows Runa to join them as they head through Los Angeles. They locate Shikaise's hideout and free Sage and the Armor of Halo before confronting Shikaisen, who has mastered the dark mystical arts of ancient kingdoms and captures them and the armors. Shikaisen attempts to attack Ully, but is thwarted by Runa, who is gravely injured as Mia frees the Ronin Warriors. Runa tells Ryo that she was glad she was able to meet someone as special as him before dying in his arms. The Ronin Warriors then call upon their armor and battle Shikaisen once again. As Ryo attacks Shikaisen, Shikaisen changes to his true form and the Ronin Warriors' attacks are dispelled by the information acquired by the computer. They instead draw upon the Inferno Armor, which the computer does not recognize, to defeat Shikaisen. As the Ronin Warriors meet in New York, they pay tribute to Runa by throwing a bouquet of flowers wrapped in her hair bow into the river.

During summer vacation, Cye and Kento go surfing during the hottest day, and Cye wonders about the armor and if fighting and destruction will define their lives. A large gust of wind soon engulfs the city, causing heavy damage and endangering the citizens, and Ully and Rowen go to visit Mia, but follow after White Blaze when he runs to the city. Mia explains that Ryo left in a hurry without explanation, and sent White Blaze to find him. Ryo asks his armor why it brought him to the city, and soon notices a ring around the sun. The ring soon fills the city with wildlife and jungle vegetation, but Ryo notices that it is an illusion. He is soon attacked by Mukala, an African warrior who fights with speed, agility, and power beyond that of a normal person. White Blaze, Rowen, and Sage soon join Ryo, but even with their armor they are unable to defeat him. Mukala attacks Ryo, who notices that he attacks with the spirit of an animal. Cye and Kento arrive, but Mukala deflects and reverses several of their attacks before calling upon his own armor - a Black Inferno Armor that glows along with Ryo's armor. Ryo is abducted, and the others attempt to call upon their own Inferno Armor, but are unable to summon it due to Cye's hesitancy. Sage then attempts to retrieve Ryo, but is captured as well.

As Ryo and Sage awaken in a distant land, they decide to venture out at dawn while Rowen and Kento discuss the Black Inferno Armor and a plan to find it, as well as Ryo and Sage. Cye tells the others he believes that their attempts will be helpless as they were not strong enough to overcome him, angering Kento. Kento blames Cye's hesitancy for Ryo and Sage's disappearance, to which Cye responds that he is tired of fighting and no longer wants to live the life of a Ronin Warrior. Rowen tells Cye that this is their destiny, to which he attacks both Rowen and Kento. Rowen then throws his Armor of Torrent into the lake. Ryo and Sage deduce that they are in Africa, and soon encounter Mukala as well as an African maiden named Naria. Mukala overpowers Ryo and Sage, shattering their helmets and knocking them unconscious. Naria asks Mukala why he brought the Ronin Warriors to fight in a distant land and if that is what the Black Inferno Armor wants. Mia notices that there is no record of the Black Inferno Armor, but deduces that Mukala is located in Tanzania. Naria frees Ryo and Sage, revealing that she is engaged to Mukala and that he is following an ancient tradition. As the strongest warrior in the village, he is able to don the Black Inferno Armor, but the White Inferno Armor and Black Inferno Armor cannot meet and Naria begs them not to fight. Ryo tells Naria that he cannot summon his Inferno Armor without the others. Naria is surprised, as Mukala is able to summon the Black Inferno on his own, and that it may be testing Ryo and the White Inferno Armor. She also says the Black Inferno Armor is worshiped in their tribe, the Taulagi, as a god. Ryo is soon called to fight Mukala in a ritual, which Naria is vehemently against. She frees Ryo and Sage, but they are soon found by Mukala.

Naria pleads with them to stop fighting, but Ryo and Sage deduce that it is their armors that want to fight rather than themselves. Sage saves Ryo, who refuses to fight, and resolves to keep fighting, but realizes that they have become pawns in a battle between the two Inferno Armors and also decides to stop fighting. Cye, separated from the group and questioning his will to fight, is found by White Blaze. Kento, Rowen, Mia, and Ully travel to Nairobi, Tanzania to find Ryo and Sage, as well as decipher the conflict between the two armors rather than leaving it as a contest of strength. As they attempt to locate the Taulagi village, they are attacked by the tribe. Kento and Ully are separated from Rowen and Mia, but follow Naria to Ryo and Sage's location. Rowen and Mia discover engravings in a cave which speaks of The Tree of Life, whose evil light will inspire the people and save them from all that threaten their lives. The Tree of Life forms the entrance to their valley, while all is underneath the Black Inferno Armor. Kento attempts to rescue Ryo and Sage, but is intercepted by Mukala. Kento's armor then flashes a darker color as he attempts to battle Mukala, which Ully notices as appearing more evil. Mia reads on the cave walls that if the Black and White Inferno Armors, which were both born in the valley, were to ever meet, that it would release an energy that would be too much for the universe to bear. Rowen's armor unlocks a power within the crystals around them, causing lightning to strike The Tree of Life. More dark crystals arise, which Mukala uses to don the Black Inferno Armor. Rowen then arrives and tells Kento to stop fighting, telling them that another person's will is manipulating them into a dishonest fight. Naria tells Mukala that the armor has been influencing him negatively. Kento and Rowen attempt to attack Mukala, but both notice that it is their armor's will that is forcing them to fight rather than their own. Both then free themselves from their armor, to which Mia notices that there is a split between their armors and their own virtues that represent the forces of good. Back in Japan, Cye retrieves his Armor of Torrent, deciding to wear it again to save his friends and test whether his will is stronger than that of his armor.

Naria, Mia, and Ully attempt to find ingredients to make medicine for the ailing Ronin Warriors. Mia again reiterates her belief that it was their armors that forced them to fight, rather than the Ronin Warriors themselves. Cye soon finds the group and uses his virtue to restore Ryo, Sage, Rowen, and Kento to health. They notice the virtue has disappeared from his armor, noticing it must be removing themselves during this conflict. Naria explains the history of the armor and their tribe: the Black Inferno Armor appeared in the Valley of the Black Crystal, and that the Talaugi were worshiped because of this. The Black Inferno Armor was worn by their tribe and protected them from outside influence, but one day showed that it could move on its own power and revealed a darker side. When Mukala discovered that there was another Inferno Armor, the Black Inferno Armor ordered that it find and fight it, to which Mukala obeyed. Naria is dismayed that Mukala has become overpowered by the Black Inferno Armor. Black Blaze soon separates himself from White Blaze, which then separates Cye from the Armor of Torrent, which moves on its own accord. The Ronin Warriors decide to destroy both Inferno Armors, as the armors without virtue become sinister forces. Naria pleads with Mukala to end the conflict, but to no avail. White Blaze is soon attacked by the tribe, which then capture Mia, Ully, and Naria. Black Blaze gives the Armor of Torrent to Mukala, who summons the other armors to create the Inferno Armor. The Ronin Warriors soon find Mukala, but want to confront the Inferno Armor rather than him. The two Inferno Armors manipulate the sun and moon, creating a lunar eclipse that darkens the land. The Ronin Warriors see visions of the end of the world that would result from the armors' lust for battle. They resolve to let their virtues win and summon their own armor to battle the Inferno Armor, which is now acting on its own will. Despite being initially unable to cause any damage, they decide to fight with their spirits as one, attacking the Inferno Armor with the power of their virtues. This defeats the evil spirit residing within, and Ryo is able to don the Inferno Armor once again. Ryo then commences battle with Mukala, who has donned the Black Inferno Armor. Ryo again pleads with Mukala to end the battle, saying that an armor that has abandoned its spirit can only bring death. As they fight, Naria and White Blaze are gravely injured; as Mukala sees the damage, the Ronin Warriors use the opportunity to attack him with their virtues and let him see the true nature of the human spirit. The eclipse soon clears, and the armors revive Naria and White Blaze before disappearing. Mukala then approaches Naria and calls her by her name, as the group watches.

Rowen runs through the city, wondering if he is being called to fight again but unsure who is calling upon them, as he feels his days of fighting should be behind him. A mysterious being known as Suzunagi covers the city with light beams and attacks Rowen. Rowen is able to deflect her attacks, confirming Suzunagi's suspicions that, though they are no longer Ronin Warriors, they still have enhanced abilities. She tells Rowen that they will continue to be Ronin Warriors until they die, that she feels sorry for them, and that they should curse the Ancient One for giving them their armors. A flashback shows the origins of the Armor of Strata: The Ancient One uncovers a box containing it, relieved that it has not found its true master. However, it is time for it to be called upon again due to the impending evil. As he unlocks the Armor of Strata, he is met by a young Suzunagi, imploring him not to release the armor as it would ignite the fires of war. The Ancient One notices that the girl is filled with bitterness of the past and commands the Armor of Strata to release her from her anger, but she evades the attack. In the present day, Rowen tells Suzunagi to relieve her hatred against the armors, and resolves to find the source behind her anger in order to put her at peace. Rowen uncovers Suzunagi's drawings of the armors, but notices that they are of different designs. He then sees a vision of Suzunagi proclaiming her hatred of the armors and attempting to destroy them. Suzunagi tells Rowen that the sadness she felt as a child has evolved into hatred, and orders Rowen to kill her. Rowen refuses to harm her until he discovers why she hates the armors. Suzunagi then states that Rowen will be judged, and summons the Armor of Strata on Rowen's behalf. Rowen sits in a new Armor of Strata, but he is immobile.

As Suzunagi looks upon the immobile Rowen, she mentions that he is the "first." Cye has a dream of the armors and a distressed Rowen, who calls for help. Ryo, Sage, Cye, and Kento reunite, having experienced the same dream. Ryo opens a package from Rowen, consisting of a book from the Edo period called "The Legend of the Five Warriors." It is a stage play about the Ronin Warriors and their battle against Talpa, written in the 19th century before those events took place. Rowen's package contains a letter stating that, though the five have not seen each other as often since the armors disappeared, he believes they are being called again and will investigate. Ryo expresses disbelief that the play contains all of their battles, feeling as though they are puppets on a cardboard stage. Cye laments the idea that they are being drawn into battle again, wondering if this will define his life. He soon receives visions of dynasty soldiers attacking the city, but also of himself, wearing the Armor of Torrent and being embraced and protected by Suzunagi. However, when she questions Suzunagi, she tells him to stay away and that it is her destiny to protect his future. A vision appears of Cye and his armor being auctioned, with the auctioneer stating that though Cye has lost his will to fight, he has still chosen the battlefield. Cye wonders why he made this decision, but Suzunagi tells him that it is due to his nature as a warrior. Suzunagi tells Cye that she can see all, and that she knows his future, feeling the need to protect him due to his virtue of kindness and his decision to choose the armor. Cye says the armor will be a part of him forever, as well as fighting and violence. He asks Suzunagi why he needs to be protected, and she tells him that she must give up her life to protect his spirit and to remain true to himself. Cye then receives a vision of Suzunagi being bound and captured, and attempts to rescue her. He asks Suzunagi if this is the future she foresaw, and refuses to let it happen by summoning his armor. A new Armor of Torrent appears, and a tear forms in its eye. Suzunagi then mentions that this is now "two."

Sage informs Kento that Rowen and Cye are missing, and that he could be next. Sage reads "The Legend of the Five Warriors" and wonders how the superstitions of a previous century could have such a large impact on their lives. He mentions that, though becoming Ronin Warriors fulfilled their dreams, he was more than prepared to put down the sword for the rest of his life. He reflects that, though the armors helped rescue the world from evil, he still feels guilt from the anguish that they indirectly caused. Sage speculates that the play was likely written to warn future generations of their armors' evil nature and notices that it foretells of a child who will be sent forward from the past to show how them how to live as individuals. He believes that she was likely sent to fulfill their innermost wishes, and that a grudge may exist between the armors. Discovering a passage of the Inferno Armor destroying the others, Sage notices that this has not yet happened and wonders if it is their destiny. Realizing that something must have happened in the past, Sage concludes that their duty as Ronin Warriors is not over and that another battle may be coming. The Armor of Halo manifests in front of him and attempts to attack, but Sage does not defend himself. The armor stops its attack, to which Sage says the time of fighting force with force is finished, causing the armor to disappear. Sage mentions that he can see the path, to which Suzunagi looks on in surprise. Looking at the book once again, Sage notices a drawing of the building where Rowen had previously went to before he disappeared and rushes towards it. Kento attempts to jump off a skyscraper but is stopped before he lands, and he concludes that someone must be keeping them alive to summon the Inferno Armor. Suzunagi then attacks Kento with the Armor of Hardrock, confirming that she wants to summon the Inferno Armor to guide it to its proper path, and for this reason she created new sets of armor. Kento tells Suzunagi that the Inferno Armor causes nothing but destruction, but Suzunagi already knows this, saying that darkness shrouds the Inferno Armor and the light is needed to free the world. The new Armor of Hardrock approaches Kento, and though he attempts to fight it, he causes no damage. A light then engulfs the area, showing a flashback of a young Suzunagi and her mother. Sage soon arrives and notices the new Armor of Hardrock, but upon seeing him, Suzunagi retreats. The Armor of Hardrock attempts to follow her, but Kento jumps upon it, causing himself and the armor to disappear as Sage questions if this is the beginning or the end.

Sage enters the building where Suzunagi is residing. Suzunagi reflects on changing of the seasons, how they are self-contained from her guilt, and whether she belongs in the current world. She commends on how the beauty in nature transcends everything in the heart, providing a sense of comfort and balance that can put the soul at ease. As Suzunagi pulls the new Armor of the Halo out of a chest, Sage approaches her. Suzunagi asks Sage what he is looking for, but Sage mentions that she summoned him. She tells him that she has no idea what her motivations are, but Sage deduces that it likely has something to do with the Inferno Armor and its nature of destruction. He tells Suzunagi that the Ronin Warriors no longer want anything to with that life. Suzunagi responds that she wants to remove all sorrow from the world, but Sage tells her that doing so will remove all good things from the world as well. Sage is then transported to town in an Edo-era town center, where a young Suzunagi and her mother live and where a performance of "The Legend of the Five Warriors" is playing. The area is soon attacked by battleships, and the play's author, Suzunagi's father, is punished by death for insisting its contents are real and causing panic on the way of life amongst the people. Sage, clad in his old armor, attempts to destroy the battleships but inadvertently destroys the town center. Suzunagi tells Sage that, in this world, he is the spirit and that, since he tried to fix the area's situation, he should not blame her for doing the same and that this is why they need the Inferno Armor. She tearfully pleads with Sage to put on his new Armor of Halo. Sage complies, but, before he can call upon the armor, he disappears, leaving Suzunagi in tears.

Suzunagi laments that she has lost her spirit, no longer finding joy in the world. Ryo asks Mia why she is trying to prevent him from confronting Suzunagi, noting that the other Ronin Warriors have disappeared. Mia suggests that he may not need to fight and suggests a different approach. Ryo listens to voicemails from the other four members. Rowen's talks about "The Legend of the Five Warriors" and its ending, claiming that it ends in a bottomless pit of darkness with the armors destroyed, and predicts that a final battle is coming, urging them to end the cycle of violence. Cye's reflects on their previous battles, but he is now more worried about his immediate surroundings and himself. He feels the armors have deep problems within themselves that are beyond his control, but he now wants to focus on what he can control - his own life. Kento's inquires on the occurrences of the last few days, and how he wishes they can overcome their tormentor with the Inferno Armor. He tells them that he is afraid, but he is afraid because he is unsure of who they are fighting - whether it is a new villain, or themselves. Sage's urges Ryo to have faith in their emotions, telling them it is important to cause empathy for others. He feels that the armors had an influence on them for several generations, and that though the armors entwined themselves in dark moments in human history, it is ultimately the human spirit that is in control of them. It is through this mix that has caused strong compassion within the Ronin Warriors as well as humanity. Mia attends a meeting of a foreign government to discuss the appearances of dynasty soldiers fighting and causing damage in the city, as similar occurrences happened in Japan, and she claims she has the answers they seek. Ryo confronts Suzunagi, claiming that he can feel the others and causing the new Armors of Strata, Torrent, Halo, and Hardrock to appear. Ryo tells Suzunagi that he will comply with her plan since he has confidence in his friends. Suzunagi tells Ryo the unique toll the armors have taken on each of its members: Rowen understands the mistakes of the past, Cye is searching for peace of mind, Kento wonders if the fighting will ever end, while Sage has denied himself all battles. She asks Ryo what he thinks will be the end result of following their armors and tells him to summon the Inferno Armor to end her anguish. Ryo tells her that he is taking the armor in order to find the answers to their questions and relieve her of her curse, as the darkness and suffering they encountered had left their hearts weary and scarred. Ryo reunites with the warriors and they and Suzunagi are transported to a graveyard which she claims is filled with warriors who rejected the power of the armors. Suzunagi tells the warriors she will kill them there, but White Blaze emerges, placing a flower on Suzunagi's mother's grave. Her mother's spirit appears, telling her that her sadness and suffering caused a great darkness to grow within her. However, the graveyard contains warriors who not only rejected the spirit of the armors, but embraced the power of love, allowing them to relieve their grudge against humanity and rest in peace. Suzunagi's flashback of the battleship attack continues, where she witnesses her mother being killed in a fire, leaving her alone and without someone to love. Her mother tells her that she placed her love in a small corner of the armors, trusting that the five spirits would arrive in a later era and help ease Suzunagi's suffering. Suzunagi's mother tells her that she will always love her, and thanks the Ronin Warriors for guiding Suzunagi back to the light. With Suzunagi able to love again, she has finally found the peace she had been waiting for. The Ronin Warriors gather for the final time and overlook the city in their new armors. They accept that they are beginning a new chapter as Warriors, but it will be themselves rather than their armors that will make an impact throughout history. As long as their hearts are filled with love, they know their spirits will dispel the negative influences and guide them towards the path of righteousness. A post-credit scene shows Ully, now in junior high, winning a kendo tournament.