As Saya sees Diva's babies, she hopes no one will be hurt. She takes her sword and brings the point up slowly. At that time, the US army was about to carry out a plan to erase all evidence of the Chiroptera...

Diva and Carl's attack puts the Red Shield Headquarters into great chaos. The ship's wall and floor are shattered and the black clad bodies lay everywhere. Saya faces difficulty as Carl continues to launch destructive attacks. Kai takes Riku to join David at a meeting point inside the ship, but...

Okamura and Mao arrive in France. They are looking for clues about the mystery behind the wine bottle of 1967 Chateau Duel that was transported out of the lycee in Vietnam. And their investigations lead them to an unexpected encounter. In the meantime, another party has reached French soil. They are known as the Schiff, and are determined to hunt Saya and Hagi.

Saya and Hagi arrived at the ruins of "The Zoo," were Saya's forgotten past is sleeping. The place is covered with overgrown grass and only a portion of the exterior walls is still standing. Soon, Saya's memories awake: her first encounter with Hagi, the incident on the Zoo owner's birthday, and the image of the whole building on fire...

As Irene starts showing signs of dying, Kai refers to Saya what he was told about Schiff. But for the girl, who firmly believes that her task is to exterminate the Chiroptera, this is the first time she feels desperately far away from her stepbrother. In the meanwhile, Julia isolates a DNA component that apparently does not belong to any known living creature on this planet...

Kai begs Saya to give her blood to Irene and save her from the advancing crystallization process. But Saya hesitates: what will she decide in the end? In the meanwhile, in the Red Shield HQ, Julia continues her researches, but she notices that her mentor Collins has got in touch with an unexpected person...

An annual ball is being held in the lycee. Students, guardians and guests in formal attire are gathered in the school cafeteria when Saya arrives in a dress she borrowed from Min. On the dance floor, Saya meets a young man named Solomon, who asks her for a dance. As the music starts, David reaches the entrance to the basement surrounded by blue roses...

Saya and the others arrive in Vladivostok, and take the Trans-Siberian Railroad with Elizaveta, a Russian Red Shield agent. But the Chiroptera are lurking in the most unexpected places...

Kai finds out that Riku has turned into a chevalier. "What can I do?" Kai keeps asking himself, wandering around in the city of Paris. He comes across Irene in the observation deck of the Eiffel Tower. She's terribly weakened, but she's ready to disclose what she knows about Schiff's past...

Kai tells Saya that he knows what she is. He suggests that Saya read Joels Diary. As she meets Joel at Red Shield HQ and starts reading the Diary, the shocking truth about Diva and the events in Vietnam back in 1972 slowly unveils...

Saya is kidnapped by Solomon. When she wakes up in a bed in a strange room alone, it was Solomon who opens the door and comes in. Saya is alarmed and stiffens. Ignoring this, Solomon tells her, "Please marry me." Meanwhile, Hagi dashes through Manhattan to look for Saya. Meanwhile, Kai is...

The opera house has become a battleground. On the stage, the two Queens, Saya and Diva, clash with their swords. Meanwhile, at the wing of the stage, Hagi and Amshel, the two Chevaliers are facing each other. All this time outside the opera house, David and Kai are restrained in the TV broadcast van surrounded by the Chiroptera. To end the face off, David offers to play decoy.

Japan, Okinawa Prefecture, Okinawa City, Koza District. Saya is a senior high school student, and with her best friend and classmate, Kaori Kinjo, she is a member of the track and field team at school. She lost her memories of her life beyond that of the past year, but she is living peacefully with her family. His father, George Miyagusuku, runs a pub called "Omoro." She also has two brothers, Kai, hot tempered but actually kind and committed to his family, and Riku, who is good natured and loves to read. But Saya's unruffled life is about to change: when she accidentally meets a handsome cellist, Hagi, it is a sign that the wheel of fate has begun to turn...

Saya and her team infiltrate the Yanbaru laboratory. David had learned that the U.S. military is conducting experiments underground to build artificial Chiroptera. There he discovers a mysterious keyword called "Delta 69". Then, a Chiropteran swoops down on Saya's party underground, where they can take no refuge. In order to escape from their subterranean trap, they will have to defeat the creature. Who can save Saya and her party from this desperate predicament?

In Hanoi, Kai and Riku encounter a beautiful girl, Mui, who lost her left leg to an unexploded bomb that had detonated. In the meantime, David and his group analyze the photos of the past phantom incidents at the lycee and find out that the past victims all had black hair and Oriental complexions. They realized Saya was lured out deliberately. Meanwhile, in Naha, Okinawa, Okamura prepares to go to Vietnam on a paid holiday. Then, from the belongings left by his late photographer father, who covered the battlefields, Okamura finds a photo...

In the morning, as Saya comes into her classroom, she finds a blue rose. Students are murmuring about the phantom legend that has been the gossip at the lycee. Saya and Hagi sneak into a rose garden beside the church where it is said the blue roses were in bloom. And they find steps leading to the underground...

Saya and the others check in at a hotel where they are supposed to meet up with others. While David is out doing some research, Riku comes down with a fever. Saya stays with her brother and takes care of him, but in this situation, Liza questions Saya about her true intention to fight the Chiroptera. Why does she kill them? Is she not getting others involved in the battles by killing Chiroptera? Saya, who is still confused about the real meaning of the dreams she had in Vietnam and in the Russian tundra, appears unable to find an answer. And then, Liza says something even more shocking...

David and the others arrive at the headquarters of the Red Shield, where they get checked for possible Chiropteran reactions, Kai finds out some shocking truth from "Joel's diary", a mysterious document in possession of the Red Shield. In the meantime, in France, the chevaliers, Amshel, Solomon, James and Nathan are meeting to decide the fate of Saya who has been keeping their plan from materializing.

Saya and Hagi meet Solomon in the Zoo again. Hagi fiercely attacks him. Solomon skillfully handles Hagi. Solomon tells them that he is a chevalier and that chevaliers are trying to kill Saya. He also adds that his feelings are different from the wishes of his brothers. Around that time, David, Kai and Riku arrive at the Zoo...

Saya is invited to a birthday party for Javier, one of Glay's children. But once at the party, Saya feels that she does not belong there after all. As Kai and all others care for Saya, who has shut her mind from them, Carl closes in on Glay's residence with Corpse Corps. And his distorted love for Saya forces him to yet further insanity...

Kai sneaks into Diva's show at the air force base. He is introduced to Diva by Amshel and offered to join as Diva's Chevalier. As Kai refuses, Diva bares her fangs. Just in time, Saya and Hagi arrive, but Amshel and Nathan's raid hinders them to advance. At the same time, David spots Julia in the base and follows her.

As Karman notices the Thorn, he acknowledges that his death is near. Moses hugs him and vows, "I will not let you die." James tells Moses that Karman needs Diva's blood to survive. Moses leaves to get what was demanded in return for Diva's blood: Kai's life. Moses does not realize James' real intention and takes a sword alone.

With much anticipation around the world, global live satellite broadcast of Diva's concert in New York begins. To stop Amshel's plan to fill the world with chiroptera using the Synchronicity effect of Diva's singing, Saya and Hagi sneak into the backstage and get ready for the final battle. Meanwhile, Nathan talks to Amshel and reveals his astonishing identity!!

The memory of that terrible night is fading away: not a trace is left, and a brand new desk is placed in the biology room, as if nothing had happened. On her way home from school, George takes Saya to the grave of the Miyagusuku family, on a hill overlooking the sea colored by the sunset. George talks about his past and his meeting with Saya. Back at Omoro, David reveals to Saya that she is the only living being who can defeat the chiropterans, as the creatures like the one that attacked her at school are called. Saya is shocked, but a new menace is just approaching, its eyes shining red...

At the experiment farm of Les Cinq Fleches Pharmaceutical, Saya is surrounded by child Chiroptera. But confronted with a mysterious humming coming from nowhere, the howling of the Chiroptera and a choking smell of blood, the girl goes berserk, and swings the sword at anything that comes into her view without even distinguishing between friend and enemy...