Richard Plantagenet has dedicated his whole life to becoming strong enough to fight alongside his father, the Duke of York. Together they have waged war to reclaim the right to the throne of England from King Henry VI and the House of Lancaster. However, the young Richard hides a secret—one that his mother scorns him for, which the cruel voices in his head never fail to remind him of. Even amid his personal turmoil, he is fortunate to find solace in the light of his father's love. But when the War of the Roses takes a turn for the bloodier, the fervent ambitions of Richard grow while his old loyalties splinter, threatening to taint his family's path to glory.

Tsukasa Atsumi is a salaryman who leads an ordinary, solitary life. On his way back from work one evening, he is saved from a demon attack by a mysterious woman in a ninja outfit. Introducing herself as Shizuri Ideura, she claims that demons target people like Tsukasa, who have Samurai Blood in their veins, and that her kind have been protecting them from the shadows. Told by Shizuri that the attacks are going to become more frequent, Tsukasa makes a deal to provide her with housing in exchange for his safety. To his surprise, he quickly finds out that Shizuri is a shut-in who loves to play video games whenever she is not busy with her ninja duties. As the two spend more time together, Tsukasa grows to appreciate Shizuri's company—and his feelings just might be mutual.

The verdant, peaceful country of Simulacrum resides on the planet of Daikuuriku. The country owes its existence to flying machines called Simoun and their holy Sibylla pilots. Powered by ancient artifacts, these ships can utilize Ri Maajon, frighteningly powerful abilities that can tear the very sky apart. Aaeru is a wilful girl who joins the ranks of the Sibylla priestesses at Chor Tempest in hopes of being able to pilot a Simoun one day. But soon after she enlists, Simulacrum is plunged into a war, as hostile nations desperately try to claim the technology for themselves. Hoping to save their respective lands from doom, these nations at peril believe the Simoun are the key to preventing disaster. Now struggling against their enemies and dealing with personal losses, the girls of Chor Tempest have no choice but to adapt to their situation if they are to have any chance at unraveling the mysteries that lie at the heart of their country: the Simoun and the Ri Maajon.

Summer has arrived, and the students of Lillian Girls' Academy are on break! Yumi and Sachiko head out to the Ogasawara family's summer home, but what was supposed to be a relaxing vacation takes a turn for the worse when some of Sachiko's old acquaintances drop by for tea. These rich and snobby debutantes don't think Yumi is worthy of Sachiko's affection and they're out to make this summer one she'll regret. (Source: RightStuf)