Favaro Leone travels the land, collecting bounties while avoiding a rival bounty hunter. But his life changes when he encounters a mysterious girl from the sky…

Favaro tries everything possible to remove his newly-acquired demon tail. Meanwhile, an elite band of knights is sent to retrieve Amira's God Key.

While humans, gods, and demons pursue the God Key, Amira and Favaro venture into a small town covered in a mysterious, eerie fog...

After receiving a helpful tip from Bacchus, Favaro and Amira finally board a boat headed for Helheim. By sheer coincidence, its captain is an old friend of Favaro's father.

Favaro and Rita try to find a way into Azazel's flying castle, where Amira and Kaisar are being held prisoner.

Favaro, Amira, and the others are captured and taken to the royal city of Anatae. There, truths are revealed and executions are prepared…

Billed as Episode 6.5. Recapitulation of episodes 1 (Encounter Wytearp) to 6 (Anatae, Part 1: Legendary Saint).

A recap of all previous episodes. It shows Amira stealing the God Key after being promised what she most desired if she took it, meeting Favaro and how Kaisar met Rita, being abducted by demons while at sea, how they came together as a team in the demons' fortress, escaping and then ending up in the human capital.

The demon legion descends upon the city to claim the God Key while the humans go on the defense. A happy Amira appears before Favaro, claiming she met her father within the city, before dashing off. The King's forces battle the demons at a losing pace while Amira happily stuffs herself inside the kitchen while Favaro, Kaisar and Rita attempt to get information about her father. Azazel infiltrates the castle, leaving carnage behind as he seeks Amira who is now passed out. He proceeds to taunt Kaisar about his father's death, admitting his involvement but Favaro takes the blame and challenges Azazel, buying time to get Amira and the God Key away. Eventually Kaisar comes back to aid Favaro and Azazel recalls he is actually the killer of both their fathers. Kaisar sacrifices himself to buy time for Jeanne to charge up her sacred weapon Maltet who then delivers a decisive blow to the distracted Azazel. The tide changes, the humans winning and Favaro manages to save Kaisar but in the meantime when Rita finishes fighting and goes back to wake Amira she finds her missing.

Amira stumbles upon the statue of Bahamut, triggering a vision of the beast being freed. Meanwhile The angels discuss Jeanne being worthy of becoming a Holy Knight to defeat an awakened Bahamut, later granting her another holy weapon: a sword. Amira tells the others about when she first woke up from a long slumber and was given her necklace by an unknown figure, promising to fulfill her dream in Helheim. The King then calls the group before him and Amira points out her father to Favaro and the others, Jeanne D'Arc's lieutenant Lavalley. The King knights Favaro and Kaisar which Favaro begrudgingly accepts while Kaisar is ecstatic to have his honor restored. Elsewhere an injured Azazel confronts Beelzebub for scheming behind their leader Lucifer's back and as Beelzebub incinerates Azazel he reveals he's bringing about Judgement Day. The jealous King is tricked into thinking Jeanne is plotting his death after she is favored by the gods and not him. That night Favaro and Rita take Amira to see her father, Lavalley. Lavalley reveals Amira is half angel and half demon, her mother being the angel Nicole and that he is not her father but a human former bodyguard to her mother. When Amira was a baby the demons kidnapped her and accelerated her growth, Amira really being 5 years old. When Amira says she was promised to see her mother in Helheim if she stole the key Lavalley tells her that is impossible and uses the united pendents to reveal Nicole's true location: Prudisia, the Valley of the Demons.

Amira and Favaro slip out of the city while Rita causes a diversion and Lavalley tasks Kaisar to track them down in order to aid them in his stead. Back in the Capital Jeanne is framed by an unknown demon for attempted murder on the king as well as slaughtering of guards and the officer Gaurin. The Angels continue to fight to maintain the seal on Bahamut as it grows increasingly unstable. Kaisar catches up to Amira and Favaro in a forest where they are transported to an alternate space and free an imprisoned dragon when they remove a poisonous barb of Bahamut from his foot. The dragon reveals that when Amira's key meets the seal Bahamut will released, as it has been countless times before. Meanwhile the god clan and demon clan accuse the other of plotting against them and amass their forces to crush the other. Amira cries when she learns the world will end because of her, meaning her mother's death though Favaro resolves to change fate after enduring a vision of Bahamut and recalling his father's words. The King orders the death of Jeanne by burning at the stake and commands Lavalley to capture and kill any of her supporters while beneath the castle Rita investigates the cause of madness and trickery. The trio arrive in Prudisia while Favaro is troubled by what the dragon told him: Should Amira ever be close to Bahamut, she'll fuse with it permanently due to her god and demon blood as only a human vessel can maintain the seal; only the way to prevent the fusing is to kill Amira.

Rita escapes from the castle after being confronted by a suspicious cloaked man who threatens to dispose of her. Meanwhile the King proceeds with Jeanne D'Arc's death sentence for deceit and conspiracy carried out before a crowd of protesters who proclaim her innocence. As Jeanne burns she faces fiery visions of the gods forsaking her, including her patron angel, causing her to accept the words of the cloaked demon. Jeanne is converted from a saint into a witch by the demon and she escapes the capital by wielding a fierce and dark power as she is now a demon. Meanwhile Favaro thinks over the dragon's words of killing Amira as the trio continues their journey to find Amira's mother. They are intercepted by the cloaked man who is the same demon who tricked the king as well as Jeanne; Amira reveals him to be her mentor Martinet who in turn tells them they are in Helheim. Rita seeks out Bacchus and inquires about Martinet but the two run into a severely injured Azazel. The demon lord Beelzebub appears before the trio, capturing Kaisar and Favaro, telling Amira to fulfill her purpose before showing her mother. Martinet reveals in actually Beezlebub recreated Amira from Nicole as an imitation vessel and he is her "true" birth parent as all Amira's memories are fabricated since as she is a mere tool to release Bahamut. Amira's compromised emotional state causes the key's seal to unlock, falling into the demon's hands as the completed Transcendent Key. Azazel agrees to help Rita if she takes him to Abos while Favaro pretends to join the demons but Martient sees through the plan and forcibly makes Favaro a demon.

With Favaro transformed into a demon, he is now under their control. Beezlebub and Martient prepare Amira for transportation but not before blasting Kaisar away to fall into the depths below. The god clan attempt to maintain the seal on Bahamut but sense the presence of the Transcendent Key now that it is formed. Meanwhile Azazel converses with Rita and Bacchus, revealing that Beezlebub is the one behind Amira's actions as well Martinet; Rita theorizes Martient is not a demon like Beezlebub. While protecting the seal the angels are attacked by the corrupted Jeanne who slays Raphael and Uriel before going after Michael. Kaisar is saved by Bacchus in his flying carriage only to be attacked by Jeanne. While Bacchus fights Jeanne, Rita gives Kaisar a cure she made for the demon transformation and he taunts Azazel into helping him. Rita attempts to administer the last of the antidotes to Jeanne but fails only for Michael to successfully give it to Jeanne through a kiss after she impales him. Jeanne is freed, turning back into a saint while Michael's physical form disappears and he reassures her the world needs her. As Beezlebub prepares to destroy the angels protecting Bahamut's barrier Azazel attacks him and engages in battle for revenge. Kaisar duels with the demonic Favaro and upon seeing how he's become a true demon shoots him in the chest. Amira emerges from the Transcendent Key's orb, now with angel's wings. Lavalley appears before Kaisar, only for Rita to warn to get way from the knight. With the barrier fallen Bahamut beings to absorb Amira while everyone looks on helplessly; as Kaisar watches in disbelief Lavalley shoves him over the edge of the flying fortress before reveling in Bahamut's awakening.

Beelzebub declares the war between demons and gods over with Bahamut's awakening as he is its master, and commands the gods to bow before him. He then orders the great dragon to unleash its power to which it attacks Beelzebub before proceeding to blast everything in sight. Rita manages to save Kaisar and reveals that Lavalley is really, Gilles de Rais, a sorcerer with a bounty who is the one behind Bahamut's revival as well as all the deception. The demons and gods team up to fight against the uncontrollable Bahamut. Kaisar attempts to attack Lavalley only to find they have no effect before Lavalley reveals he is Martient as well. Elsewhere a heavily wounded Beelzebub curses Martient's deception of using Amira to be able control Bahamut before Azazel finishes him off, ending his revenge. A bloody Favaro appears, revealing he's not dead and begins combat against Kaisar seemingly by Lavalley's command. Favaro gains the upper hand before proceeding to cut Kaisar's hand off, presenting it with the bounty armband to Lavalley. Favaro catches Lavalley off guard by warning him about having a bounty on his head before Kaidar recites the bounty armband's incantation thus turning Lavalley into a bounty tablet. As Rita tends to Kaisar's wounds Favaro reveals that Kaisar managed to shoot him with the antidote, turning him back to normal and the fight was an act. As Bahamut continues to rage Favaro declares it's up to him to stop it and he'll kill Amira as it's the only way to stop the beast as well free her from sadness. Kaisar decides to join Favaro to save Amira, still believing there is a chance to separate her from Bahamut. In order keep Bahamut still for a minute the demons and gods work together to contain the beast to allow Favaro and Kaisar to approach it. With tears in his eyes Favaro screams Amira's name as he stabs Bahamut, unleashing a beam of light. Amira then appears before him, chiding him for being late and he promises to take her somewhere better than Helheim. Amira proceeds to kiss Favaro after realizing he isn't lying when he meets her with a serious, sincere gaze. She thanks Favaro before disappearing back inside Bahamut, causing the beast to explode though Kaisar escapes, leaving Favaro to be caught up in the blast that destroys his leg. Half a year later in the royal capital Kaisar, given a mechanical hand from Rita, commands the soldiers as a lieutenant with his knighthood intact. Favaro is alive with a mechanical right leg and is back to bounty hunting though he remarks Bahamut will never be forever gone. Kaisar then suddenly appears, forsaking his knightly duties, swearing not to be in Favaro's debt and the two ride off.

First short story that focuses on Favaro and Kaiser between the events of the first and second series as they visit Favaro's home village.

The second short story that shows Kaiser as a knight commander sparring with Jeanne, and sharing the reasons they remained as Orleans Knights in the aftermath of the final battle against Bahamut.

There are rumors of a mysterious rag demon that has been massacring humans in the capital. Hearing this, Nina decides to try to catch this wanted criminal. Nina is a young girl who has come to the capital to work hard and earn money to send back to her mother in her rural village.

After waking up in Rita's clinic, Nina continues to work hard in the capital. Azazel approaches her in hopes of using her red dragon powers to get revenge against the humans.Meanwhile in the palace, Charioce XVII questions Kaisar on his responsibility for failing to capture the rag demon, spurring Kaisar to attempt to contact the rag demon on his own.

A god has infiltrated the capital following the trail of Mugaro's recently unleashed power. Nina is enjoying life in the capital as if nothing happened, and she has a chance meeting with an attractive, young man. Back at the palace, Charioce XVII takes up command and sets out to capture the rag demon (Azazel) himself.

The rag demon (Azazel) faces Charioce XVII's forces alone in order to save the demons that are being held hostage.

After Azazel was saved by Nina, and he now wants to use Nina in his revolt against mankind. Being completely unaware of all this, Nina is enjoying shopping with Mugaro in the city. At the same time, Kaisar and Rita are having lunch together...

Nina is out shopping for supplies to prepare for the evening festival of the war commemoration. She bumps into the handsomely disguised Charioce in the city once again, and invites him to the food stand she is helping to run.

The Orleans Knights captain Kaisar becomes uneasy as he spots demons led by Azezel acting suspiciously, so Kaisar attempts to advise Charioce XVII against participating in the upcoming victory parade. Meanwhile, Nina has no idea that any of this is going on as she helps run the food stand with Rita in the city.

Burning with rage, the demon Azazel engages King Charoice XVII in combat, and the Orleans Knight captain Kaisar takes action to do what he believes is right.

Even while she's imprisoned, Nina is still her energetic self, working away tirelessly. On the other side of the prison, Kaisar finds out that his old friend Favaro has also been imprisoned and discovers that Favaro already knows Nina. Kaisar sits and listens as Favaro tells him the story of how he met Nina.

Captain of the Orleans Knights, Jeanne D'Arc, is ejected from the capita following differences with Charioce XVII, which costs her everything.

Hoping to see Mugaro again, Jeanne and Nina decide to break out of the prison where they're being imprisoned. In the capital, the gods have　gotten hold of El's power, and they demand that Charioce return the power that he took from them.

After failing to break out of the dungeon once, Nina and Jeanne are helped by Rita in their second escape attempt. Meanwhile, Gabriel leads the gods' advance on the royal capital, where Charioce is waiting. Forces on each side are about to open fire.

War erupts between humans and gods. To get the upper hand against the fast-advancing gods, Charioce XVII activates a weapon that was slumbering deep underground. Just when Nina and the others are escaping from the dungeon, they're thrown into the heat of battle.

Nina and Jeanne leave behind the battlefield and head toward Nina's home in search of a way to enter the land of the gods. There they meet the village elder and are warmly welcomed by the villagers, including Nina's mother.

Nina and Jeanne soar through a storm to reach the land of the gods. Once there, Jeanne is reunited with her son, El. Meanwhile Azazel now a captive of the humans is forced to battle other demons to the death in the capital's coliseu.

El attempts to evade Nina and Bacchus in order to flee from captivity in the palace of the gods. Meanwhile, in the capital of Anatae, Kaisar is taken from prison to the coliseum, where he's forced to battle one-on-one against a demon.

Nina and El flee from the land of the gods and return to the capital. There they are reunited with Rita and Favaro, who have rescued Kaisar. While searching around town for information, Nina once again encounters Charioce XVII in disguise.

By meeting Charioce XVII again, Nina gains the ability to transform into a red dragon at will. Azazel has escaped the coliseum and is filled with bitterness when learning of Nina's new ability. El gazes on at Azazel, and the group plans how to snatch the bracelet that Charioce is wearing.

Jeanne and Sofiel leave the land of the gods in search of El, but they aren't able to get any information. As part of a plan to snatch Charioce XVII's bracelet, Nina and Alessand lead an effort to sneak into a ball at the palace.

After fleeing from Charioce XVII's ball, Nina and the others are pursued by the Onyx Knights, who make an attempt on their lives. Mugaro acts together with Azazel, and Jeanne encourages him to return to the land of the gods.

Rita frantically attempts to save El after he's stabbed by Alessand. El's mother Jeanne is powerless to do anything but watch. Azazel makes his ire known and then vanishes into the rain. Alessand pleads with the head of the Onyx Knights to allow him entry into the force as a reward for stabbing El.

Charioce XVII brings unrest to the land of Eibos, where Bahamut was revived a decade ago. Nina follows the king to Eibos in order to put an end to his violent acts. Having lost her son El to a stabbing, Jeanne leads her allies to make an assault on the capital and slay Charioce.

While Charioce XVII is leading Bahamut to the capital, demonic forces jointly commanded by Azazel and Lucifer besiege the city. Jeanne's rebel army enters the fray, which results in a free-for-all battle of men, gods, and demons. Amidst the chaos, Dias finds Alessand wandering the battlefield.

Kaisar looks death in the eyes when protecting Charioce XVII from Jeanne and Azazel. Meanwhile, Bahamut unleashes a torrent of destruction across the world. As the end draws near, difficult decisions become inevitable.