In the year 123 of the Universal Century, skirmishes between the Federation government and the rebel group Crossbones Vanguard echo across Earth's space colonies. One of these small battles breaks in the hometown of young Seabook Arno, forcing him and his friends to flee and ensnaring them in the political turmoil that is quickly evolving into an all-out war. Seabook meets Cecily Fairchild, granddaughter of the aristocrat Meitzer Ronah, who seeks to create a new political power called "Cosmo Babylonia." Using the Crossbone Vanguard as its muscle, the Ronah family schemes to restore aristocratic rule and establish an economic system that will benefit the nobility, thus devastating the quality of life for the common people of the Earth Sphere. Seabook is tasked with piloting the Gundam F91, a mobile suit created by his mother, and must choose between protecting the status Federation's status quo or cooperating with Cecily to find a better way of life for all.

Story of a girl born with a bad leg. Ritsuko longs to go to school and make lots of friends but it is not so easy. Her mother is very protective of her and at school she is teased by her classmates for her strange way of walking. Will she manage to keep her smile?

It is not strange that the Demon Lord's forces fear the Crimson Demons, the clan from which Megumin and Yunyun originate. Even if the Demon Lord's generals attack their village, the Crimson Demons can just easily brush them off with their supreme mastery of advanced and overpowered magic.

When Yunyun receives a seemingly serious letter regarding a potential disaster coming to her hometown, she immediately informs Kazuma Satou and the rest of his party. After a series of wacky misunderstandings, it turns out to be a mere prank by her fellow demon who wants to be an author. Even so, Megumin becomes worried about her family and sets out toward the Crimson Demons' village with the gang.

There, Kazuma and the others decide to sightsee the wonders of Megumin's birthplace. However, they soon come to realize that the nonsense threat they received might have been more than just a joke.

The story revolves around Nikolai, apparently a part-cyborg; Galory, a young boy who apparently is part human/part Crest person, and Althea, who is entirely a Crest person. Seems the Earth and the Crest people were at war for 300 years so there's still a lot of bad feelings present. The ship Galory, Nikolai and others are on is ambushed and almost everyone killed by some kind of automated attack ships from a huge Crest ship that has been taken over by an automaton. Galory, Nikolai and Althea go to the ship to try and see if there are any survivors of an advanced party from Galory's ship that can be saved, and to see if they can destroy the Type 38 automaton in the ship's core.