Shido is shocked when Mio tells him that all the Spirits are dead. Stunned and unable to move, Mio nearly wipes his memories as Shido, but there is still one Spirit who's survived.

While Shido and Mio face each other and convey their feelings, Westcott activates his terrifying ritual. Can Shido and the others stop his plot from achieving fruition?

Driven by her resolve to erase the Spirit of Origin from existence, Kurumi is fighting a battle of her own. And at long last, the identity of Phantom is revealed.

Shido and Kotori enjoy their date at the amusement park until they are interrupted by Origami.

As Shido rushes to the Spirits' side, Westcott blocks his path. Meanwhile, Tohka and the others find themselves overwhelmed and powerless before Mio's manifested Angel, Ein Sof Ohr.

A certain time, a certain place. Shinji Takamiya encounters a spatial earthquake, but finds a girl at the scene. She remembers almost nothing about herself. Shinji gives her the name Mio and she goes to live with him and his younger sister, Mana.

Tohka is born into a negative form with her counterpart sword Qliphoth and has no memory. Mana and Jessica reach the concluded battle. Jessica, dying in Mana's arms, tells how she always felt jealous and wanted to become strong for the DEM, Mana made her decision to dishonor Westcott. Westcott decides to retreat, although he briefly calls Shido "Takamiya". Tohka launches brutal attacks then Miku becomes vulnerable. Yoshino, Yoshinon, Kaguya, and Yuzuru regain their sanity. Shido took the hit to protect Miku. Tohka swings the sword of demise on the city, Shido flies towards her reminding her of him; dropping the Sandalphon, he seals her power once more with a kiss restoring her. Kurumi continue her search for the captive Spirit. The next day, Miku who is happy trusting Shido she purposely kisses him sealing her power much less her clothes. Miku invites everyone to listen to her latest concert then announces to her "darling" stunning the crowd and Shido. His competition among the girls' affection continues.

Shido and the others face off against "Nightmare", and they receive some unexpected help.

To get ready for his date with Kotori, Shido goes swimsuit shopping with Tohka and Yoshino. Meanwhile, Origami finds out more about Ifrit.

Shido almost got caught until Miku makes an entry as she commands the Spirits to join the battlefield just to collect Tohka. Origami in a convention suit partners with Mana. While Shido and Miku argue, he reveals that Kurumi learned how Miku acquire her Spirit power from Phantom (like Kotori), she finally tells that she used to be a splendid singer Tsukino Yoimachi, but one day she rejected a TV producer's career offer due to disgrace, then bad rumors spread with no help from her agency and fans, she tried to reconnect with her fans, but suffers psychogenic aphonia, resulting in her losing her voice; this cause Miku to tension condemn humanity. Shido vows to keep his promise. Origami, Ratatoskr, terrorizes the territory to subdue Ellen. Westcott makes his appearance when Shido and Miku find Tohka. Shido is stabbed by Ellen with Tohka watching she goes berserk.

Shido is flooded with memories as the girl named Mio Takamiya stands before him. She was the person with whom Shido once shared his feelings when he was Shinji Takamiya. Meanwhile, Kotori and the others learn of Reine's true identity.

Many spirits were exhausted by Mio's Ein Sof Ohr and collapsed. Kotori directs Fraxinus toward Mio and fires her spirit cannon, Gungnir, but...

A young AST joins Origami and the others in the fight against the Spirits. Meanwhile, another transfer student appears at Shido's school.

Shido learns the truth about his and Kotori's powers, and Origami reveals more details about her past.

With the support of Ratatoskr, Shido goes on a date with Tohka as Origami watches from afar.

The woman stalking Tohka and Shido before, Ellen, finally reveals her true colors and orders a pack of mechs called Bandersnatch units after Tohka in an attempt to capture her. During the clash, Tohka gets incapacitated and captured only for Shido to call upon her sword to break the Bandersnatch off her. Meanwhile, Kannazuki and his crew on board the Fraxinus gets attacked by an enemy airship. Kannazuki launches a counterattack after deflecting several shots, leading to a full-scale dogfight between the two ships. Back at Shido's battle, Ellen falls down into a pit trap (oddly enough) dug by Ai, Mai, and Mii allowing Shido and Tohka to escape. Running to Kaguya and Yuzuru, he summons Tohka's power to intervene the duel and convinces both the girls to forget about becoming Yamai and focus on enjoying their lives together. Noticing the airship that attacked the Fraxinus, the twins combine their powers and eviscerate the ship with one massive blast. After the incident, Shido successfully seals the Yamai twins' powers, unfortunately stripping them of their clothes just as Tohka arrives. Meanwhile, Kotori learns from a strange man that Shido has manifested a spirit's power and that she might have to kill Shido if the situation worsens.

Shido goes to Origami's apartment to look for Hermit's puppet, Yoshinon, who was lost during the last fight, and Tohka talks with Reine about her feelings for Shido.

Trapped by Beelzebub in a world of fiction, the crew is desperate to escape. But without their powers to aid them, they're at the mercy of the story they're inside.

A full-scale confrontation between Shido and his friends Ratatoskr and DEM has begun. Kurumi and her clone, AST led by Ryoko Kusabe, join them, and as the battle intensifies, Shido confronts a horde of pseudo-Spirits, Nibeelcole.

When the Earth comes under attack by a Spirit from space, Shido attempts to charm her. The problem is, she's closed off her heart and just wants to be left alone.

After a lunchtime showdown, Kurumi and Shido plan to settle their competition on a special holiday. In the meantime, the Spirits help Shido prepare to face Kurumi in their own way

All the sealed Spirit power is making Shido go wild, but the only cure is to kiss him again. Can all the girls entice Shido to fall for them before it's too late?

Origami makes an unexpected decision that shakes things up. While Shido runs off to investigate, a spatial quake alarm lands the others in a special kind of trouble.

Origami is on a mission to avenge her parents, but when she finally discovers the truth, it turns out to be much harsher than she bargained for.

Natsumi uses her powers to turn the girls into children. But their plan to convince Natsumi that her true form is cute turns out to be no child's play at all.

The Humpty Dumpty satellite has a great fall towards Tengu City. Will Natsumi realize her own self-worth before the city is reduced to rubble?

As Shido's date with Reine is winding down, Reine comes to the realization that history has been rewritten. With DEM approaching, Kurumi arrives at their location to aid Shido.

Shido races to save Mukuro before DEM reaches her first. But when she gets hostile, Shido, Kotori, and the Spirits must outplay their enemies in order to open her heart.

As Fraxinus defends against a fierce opponent, Origami stops at nothing to fulfill her wish and makes the ultimate sacrifice. Will she regret the cost to gain what she wanted?

While the witch impersonates one of his friends, Shido is forced into a game where he must identify Natsumi before it's too late and they all disappear.

Shido Itsuka is an ordinary high school student living with his little sister in Tengu City, a city that is often disrupted by "spatial quakes". During a spatial quake at the beginning of the school year, he meets a beautiful and mysterious "Spirit".

Shocked by Kurumi's appearance at school, Shido and crew try to deduce her intentions. This time, Shido's date with a Spirit is a matter of life and death.

Shido wakes up and finds that the world around him is different. His attempt to thwart disaster may have succeeded, but for how long will it last?

The suspension placed on Origami is finally lifted, we see Kusakabe having some complaints and a new character is introduced into the series. Shido is selected as the organizer of the Ten-Oh Festival, after a spacequake alarm goes off, Shido gets working and a new spirit is revealed, Diva, proves to be more of a challenge than the other spirits. AST interrupts Diva and they go on trying to take her down resulting in her escaping, after Shido encounters himself in a troublesome situation. The transformation of Shido into Shiori begins. The fierce battle to win Diva over begins, but will Shiori be able to accomplish the task at hand or will Diva be more challenging than expected?