The year is 2016, and glitches found in humanity's past threaten the sustainability of its future. The Chaldea Security Organization-tasked with preserving human history for as long and as strongly as possible-has developed a new method of time travel to repair these events, stabilizing humanity's future. But when an unknown threat pushes mankind to the brink of extinction, young recruits Mash Kyrielight and Ritsuka Fujimaru find themselves at the helm of the rescue mission: Obtain the Hol...

After just barely escaping from Singularity F, Mash and Ritsuka rayshift to the year 1431, to the site of a new singularity located in Orléans, France. As dragons fill the sky, the duo finds that the era they have been transported to is home to not one, but two Jeanne d'Arcs. What is this new, alternate history that awaits them? And will the woman reborn from the ashes be a witch, or a savior…?

As Romulus awaits in his united capital, Nero advances in a frenzy of violent love for her people and her empire. Boudica must act to keep Nero from destroying the world. Nero and Boudica fight to prove the power and beauty of love, when a formidable ruler from an ancient time suddenly appears on the scene…as the curtain closes on Septem, site of the Second Singularity!

The second singularity is back in the Roman Empire, where a ruler that should be dead is back to life and challenging Nero Claudius, the fifth emperor. Mash and Ritsuka lend Nero their assistance, but before the battle can begin, Caligula-Nero's uncle and the third emperor-stands in their way! The stage is set for a new Grand Order in ancient Rome!

THE STAR THAT GUIDES THEMJeanne d’Arc’s flag flies high above France once more—but is it a flag of justice, or oppression? With the Dragon Witch Jeanne d’Arc still at large, Ritsuka, Mash, and the real Jeanne d’Arc join forces with new servants Marie Antoinette, Wolfgang Amadeus Mozart, and Elisabeth Báthory and head for the witch’s castle in Orléans. With France’s history and humanity’s future on the line, can Ritsuka and Mash put an end to the evil Dragon Witch’s reign of terror? Just what ...

After defeating the third Heroic Spirit Swordmaster, Ritsuka and Musashi retreat to Muramasa's smithy for a well-deserved rest. But their safe haven is sieged by two fearsome Swordmasters and they are rocked by the thunderous force of Kalasutra Hell and the mesmerizing allure of Samghata Hell. The Master of Chaldea and the wandering samurai battle to protect innocent lives…but they know too well that the brutality of these oni knows no bounds!

Having defeated the first of the Heroic Spirit Swordmasters, Ritsuka and Musashi set out for Toke Castle in search of the truth behind the irregularities in Shimousa Prefecture. To their surprise, many familiar faces await them in the castle town. Perhaps these chance encounters will help them get to the bottom of things…or perhaps they're a portent of further chaos on the horizon. Then, not a moment after they recruit a new ally on their quest, they encounter the second of the fearsome Sw...

The death of Orimura Ichika!Phantom Task has gained control of the English anti-IS orbital cannon “Excalibur” after a successful raid, but things go wrong when the controls stop responding and it begins to de-orbit. Meanwhile, Cecilia scores a theme park birthday date with Ichika on Christmas Eve, but that glimmer in the sky isn’t a romantic flurry of snow—it’s a barrage of lasers from Excalibur! Amidst the commotion, Chelsea appears in the third BT prototype, challenging Cecilia t...

“Ufufu. And YOU shall be my attendant.”Iris, the seventh princess of Luxembourg, has arrived at IS Academy—and taken Ichika as her servant.Ling is less than pleased, and when Iris proposes eloping back to her country, she challenges her to an IS match to put a stop to it. But even teamed up with Houki, the two can’t keep up with her fourth-generation IS... And if that isn’t bad enough, the changes Houki’s been going through prompt a previously unknown squad of mass-produced...

The battle against Phantom Task and Unnamed during the World Purge incident didn't just leave Tatenashi wounded—when Ichika swooped in to save her life, it melted her heart, too.(What do I do? I'm falling for him...)But she's not the only one after our hero, as the rest of the crew won't be content to sit back and watch as they grow closer. With Field Day coming up, it's the kind of race for his affection that could only happen at IS Academy!All's fair in love and w...

In the aftermath of the Golem III attack, Kanzashi confesses her love to Ichika, while Houki and the others watch like hawks to make sure that he's not too interested in return. Meanwhile, with the school still heavily damaged, and a desperate need to repair Byakushiki, Ichika visits its manufacturer, Kuramochi Engineering... And while he's gone, a shadowy plot seizes its chance to strike IS Academy. What is the Kurokagi, and its World Purge ability? How far will the girls go to catch Ichi...

IS Academy's second semester kicks off with a race to get Ichika into a club! Meanwhile, the appearance of the student government president Sarashiki Tatenashi, rumored to be the strongest student in the whole school, presages a descent into chaos. And a shadowy organization makes itself known for the first time?! The story settles into high gear in the fifth installment of the high-speed school action romantic comedy!