Hikari and her sister are off for Europe. But their plans are interrupted when the Fusou naval fleet is struck by a newly emerged Neuroi nest. It's up to Takami to defend the fleet against this unexpected threat, but she's overwhelmed by the sheer number of enemies. When she uses a dangerous technique to stave off the foes, it's up to the inexperienced and underpowered Hikari to protect the fleet...

The twin rail guns have been destroyed and the Neuroi nest continues its advance towards Petersburg. With Takami having exhausted her power, there's only one shot left: for Hikaru and Kanno to take the AP shell directly into the core itself.

Operation Freyja begins, but Hikari isn't a part of it. She's been shuffled off to the rear lines to keep her safe, while Takami stands at the forefront of the 502nd's flight wing. But when Freyja goes wrong, who will be there to help pick up the pieces and save the day?

Takami has returned to the 502nd, and is going to lead the operation against the new Neuroi nest. But in exchange for fighting in her weakened condition, she makes a request: that Hikari be sent away from the front lines to safety. Can Hikari convince her sister that she deserves to stay?

Young Karibuchi Hikari is the little sister of Karibuchi Takami, a famous witch who fought against the Neuroi in Europe. Hikari is a hard worker with a lot of stamina, but she lacks her famous sister's magical abilities. When she gets the chance to go to Europe and fight alongside her sister, she gladly volunteers, but first, she'll have to prove herself by competing with another student at her school.

As people struggle to survive the onslaught of demonic forces, the eclipse reaches its zenith. What will happen when the prophesied God materializes among mortal men?

Ikta suffers a serious setback at the hands of the unsleeping, shining officer from the Kioka republic. His lines have been broken and the retreat is in disarray. To salvage an increasingly desperate situation, he leads a small, handpicked force to lure Jean into a trap. But Jean's proven himself for than a match for Ikta already, and the Alderan military outnumbers his own forces by over a dozen times. How can he handle such overwhelming numbers when his opponent has shown to be his equal?

The Imperial army is continuing its retreat from the numerically superior Aldera forces at the base of the Alafatra mountain range. They've set fire to the forest to buy themselves more time, but after a few days the fire is beginning to burn out. To buy the time they need to finish the retreat, Ikta is forced to mountain a proactive mobile defense and keep the flames burning. But the enemy general is breaking all the rules, and Ikta can't figure out his game. By the time Ikta realizes what's happened, it's too late, and the enemy battering down his walls with a new weapon and sending their cavalry straight through the flames!

Jean Rousseau of the Amphibianfolk has been frequently featured in the media lately. Just what kind of person is he? And then there's the prominent man who has a meeting with Jean Rousseau. What strange past does this man have? It's all about to be revealed.

Himeno is participating in a yabusame competition. A younger girl who trains with her, Ayaka, suddenly approaches her with a declaration of war. Kyoko whispers something in Himeno's ear, and Himeno suggests to Ayaka that they make a little wager...The town of the Merfolk is preparing for a festival. Eri, the young Mermaid who'll be playing the role of the priestess, swims out to an island some distance from the shore with the town's elder, but what they see there shocks them...

Manami and her four younger sisters, Himeno and Shino, Kyoko, Nozomi, and the new student Suu-chan are on their way to spend the day at the pool! How will Suu-chan deal with her first pool experience?

Himeno's Centaur ancestors have a romantic, fascinating history of grand proportions. To Himeno, living as she does in the present world, it's a fantastic tale she can't even imagine. Kyoko's father has a career in writing, and it turns out Kyoko is an excellent assistant to him. Manami's father, on the other hand, is a painter in his free time. What is Manami's opinion on her own father?

A new student, the Antarctican Quetzalcoatl Sassassul, suddenly transfers into the girls' school one day, much to the intrigue of everyone in the class. But for some reason, Himeno seems to have experienced some sort of childhood trauma involving Antarcticans. The new student is as kind and friendly as can be, but Himeno just can't shake her fear... Meanwhile, everyone in the class has lots of questions for Sassassul...

On her way to school one morning, a boy from another school gives Himeno a love letter. The sudden turn of events has Himeno bewildered, and behind her bewilderment likes a traumatic memory from her childhood. What happened in Himeno's past? Himeno and Nozomi have come to Kyoko's house for a study meeting. As they're working, something strange happens...

Himeno has a young cousin named Shino-chan. Manami, as well, has three young triplet sisters, and an even younger fourth sister. One day, Manami orders her triplet sisters to stay home and watch their youngest sister while she goes out. This leads the four youngest Mitama sisters to experience a truly mysterious phenomenon...

Himeno has been featured in a fashion magazine! Could it be that she's working part-time as a model? Suspicion and wild ideas fill the minds of Nozomi and Kyoko, but what is the real story? Himeno's class visits a school for merfolk to participate in a joint class. The students of the two classes begin to build relationships as they interact throughout the day, but the highly unique merfolk students remain a source of intrigue.

As they read a script that Mitsuyo wrote, Kyoko and Nozomi have various criticisms... Just what is Mitsuyo's story about? All the girls in the class are holding an arm wrestling tournament. Who will be the victor? Even as the trepidation hangs in the air, the heated battle begins. Who will the goddess of victory smile upon in the end?

Sue-chan, the youngest of the Mitama family, has a weak constitution. Manami and her triplet sisters are always worrying about her. On the other hand, Himeno's niece, Shino-chan, isa very curious girl. She asks Himeno all kinds of questions as they go for a walk, and looks adorable doing it. All the little ones—Himeno's niece Shino-chan, as well as Manami's triplet sisters and baby sister Sue-chan—live their own stories.

Suu-chan the Antarctican is going on a date with a boy in her class. Himeno, Nozomi, and Kyoko are worried about her, so they quietly follow the couple... At the same time, Manami is on a date with a girl from her class, and they end up talking about her father...

It's nearly time for the school fair, and Himeno's class is putting on a play. Himeno is chosen to play the princess, and after much consideration, Nozomi is chosen to play the prince! With the guidance of the class president, Manami, preparations begin to come together. Then, when the curtain rises at last, the unexpected happens...Kyoko is completely exhausted in the middle of running a marathon for PE class. What will become of her?