Volken and Renas (now calling herself Olivia Litlet) defeat Volekn's former instructor, Vizac in order to escape to the Kra District. However, Hamyutz continues to pursue the traitors in order to destroy the secret of Vend Ruga once and for all. Meanwhile, the Armed Librarians learn that Vizac is dead and they all blame Volken for their comrade's murder, all except Mirepoch.
With Hamyutz now in possession of Shlamuffen she decides that it is time to confront the treacherous Mokkania. Meanwhile, the reason for Mokkania's sudden attempt to kill Hamyutz becomes clear and it is not what any of the Armed Librarian's originally believed.
Kaname suddenly confesses his feelings to Chisaki in front of her parents, and Chisaki doesn't know what to do. Hikari and Manaka do their best to go on with the Ofunehiki, hearing that if the Sea God gets his powers back, the disaster that is to befall their world may be stopped.
When 'Armed Librarians' launch an attack against a 'Church of Shindeki' ship they are attacked by 'Human Bombs'. After boarding the ship and fighting off the guards (the Mock Men), the Librarians find dozens of 'Meats' in the hold but are unable to save them all before the ship itself explodes. One of the few survivors is the Human Bomb, Colio Tonies who's only thoughts are of killing the Acting-Director of the Armed Librarians, Hamutz Meseta.
Akari is able to tell Uroko-sama and her father how she feels about Itaru, and is starting to smile a little again. Hikari sees that and feels a little better and heads to school. While on their way to school, Chisaki is late and walking on her own.
The students get together in their swimsuits for swimming class. The sea kids are still getting used to school on land, but are starting to get along with the other kids. The teacher mentions that he's going to be timing them today and as the kids groan in response, Hikari and Tsumugu's rivalry fires up.
Uroko-sama tells Hikari and Miuna that Manaka has lost the heart to fall in love with anyone. Hikari tries desperately to find a way to turn Manaka back to normal, and has a hard time facing her because of that. Hikari and Miuna decide to talk to Chisaki, Kaname, Tsumugu, and Sayu about the situation because that's how they've always solved things.
The day of the Tomoebi, a Hikari who hasn't aged from five years ago, appears in front of Miuna and Tsumugu. He has no memory of what happened since the Ofunehiki, but seems healthy and starts living at the Shiodome household.
Ikta leads his troops to grand victory over the forces led by the higher ranking officers. But what was supposed to be a simple training exercise turns deadly serious when a force of men loyal to a betrayed commander kidnaps the princess. Can Ikta lead his exhausted troops to track down and defeat a squad of experienced soldiers? And can he do it without letting them hurt the princess?Watch Now:Amazon
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 maintain 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 is battering down his walls with a new weapon and sending their cavalry straight through the flames!Watch Now:Amazon
Fuuka has returned to Okinawa to find a dejected Kukuru, struggling to do well at work.
With Grandpa out of town, Kukuru and Fuuka work together to feed and weigh the penguins. Kukuru notices something wrong with one of the penguins, and decides to call the vet, who is on maternity leave.
Ikta succeeds in a daring plan to cross the Kioka border and return the princess home. But this means he gets a reward, and his reward is the title of Imperial Knight. Now he finds himself dragged into a war he hates, serving a government that doesn't want to win, and despising the princess he rescued.Watch Now:Amazon
The Sinack have been subdued, but the Imperial Army finds that it's been caught in a trap! A huge army from the Aldera nation has crossed the supposedly-impassable northern mountains, and threatens to overwhelm the exhausted Imperial forces. Ikta's only way out is to force a peace treaty with the Sinack and ask for their help, which means going to their defeated leader and abasing himself. Will she respond to his pleas, after the Imperials burned her village and killed her people? How far is he willing to go earn her forgiveness?Watch Now:Amazon
Ikta and his soldiers are sent to deliver supplies to the struggling imperial armies as the war continues. Unused to fighting in the high mountains, and led by incompetent leaders the imperial soldiers suffer heavy casualties. Ikta devises a brilliant stratagem to retake an enemy fortress, but when a messenger begs him for help in saving his allies, he's forced to choose between risking his own soldiers life, and bringing another imperial force to certain doom.
"Welcome to the world of science!" When Yatori was 9 years old, she was sent to study with the general Bada Sankrein, and met a young boy her age, Ikta. The world he shows her is new and exciting, like nothing she's ever seen.
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?Watch Now:Amazon
The war against the mountain people continues, and the imperial forces are about to make one last march to their final staging ground. The incompetent imperial commanders pick a route that leaves their flanks exposed to an attack, but fortunately Ikta persuades them to dismount and use their shields. In the midst of the Sinack attack, a group of unknown assassins appears out of nowhere and heads straight for the Lieutenant General! They're heavily armed and highly trained, but can Yatori stop them in time?
The Imperial Army is pushed back, and Ikta is forced to use every trick at his disposal to keep his numerically inferior force from being overwhelmed. The Alderamin army has 12,000 troops, and his unit has only a little over 600. When he's forced to make a tough call to sacrifice his own men and save the Sinack, Suya confronts him angrily. She wants to know why he was willing to sacrifice his own men for the people he was fighting yesterday, and she says he owes her an answer.Watch Now:Amazon
A dolphin is lost in the waters near Tingarla. Kukuru is eager to check up on it, but she is busy preparing for an upcoming project proposal, so the staff take turns visiting the dolphin.
Ikta has been appointed an Imperial Knight, and his new life at the High-Level Officer's School begins. The easily-bored Ikta has difficulty fitting in, and its not long before he's picking fights and making enemies among the upper ranks. He's set up in a trap to be humiliated during a mock exercise, and to make matters worse, his platoon commander won't listen to a word he says. The reason: because he slept with her mother!Watch Now:Amazon
Ikta is a brilliant, but lazy and unmotivated boy. His childhood friend, a high-ranking daughter of a noble, offers him an easy position at a library if he can help her get the top score on a military exam. But their lives take a sudden turn when the boat carrying them to the exam runs aground, and Ikta rescues a mysterious girl on board. When she turns out to be a princess, and they all find themselves behind enemy lines, Ikta is going to start having to work hard for real...Watch Now:Amazon
Ikta and crew are assigned to a garrison in the far northern region of the empire: a lonely, desolate place at the foot of a massive mountain range. The garrison staff are petty and corrupt, and don't like it when Ikta slacks off and defies orders. But when they try to throw him in the garrison prison, he stumbles across a secret that they want desperately to keep hidden.Watch Now:Amazon
War breaks out in the far north, as the Empire's oppression of the mountain people results in a terrifying backlash. With the one competent leader in the Northern Garrison assassinated, the ignorant garrison commander flings the troops headlong into a highly defended, mountainous position, with disastrous results. Ikta and his friends are kept as part of the reserves for now, but it won't be long until they're thrust into the war as well.Watch Now:Amazon
Hamutz uses her ability to summon the various Armed Librarians who have been killed in battle and together they struggle to defeat Niiniu and defend the world. Meanwhile, Ruruta calls on Mirepoch to revive those Armed Librarians still in the living world and protect the innocent population from the Beasts of the Final Chapter.