Seiso Academy is a prestigious high school that sorts students into two majors: General Studies, characterized by distinct grey uniforms, and Music Studies, characterized by pristine white uniforms. While rushing to class one morning, General Studies student Kahoko Hino has a chance encounter with Lili, a small fairy searching for someone with the ability to see her. Lili flies away, and Kahoko, puzzled by their meeting, continues on her way.

Later that day, the participants of a school-wide music competition are announced, and all of them are, unsurprisingly, Music Studies students—at least until Kahoko's name is read out. Immediately tracking down Lili, the small fairy gifts Kahoko a magical violin and convinces her to participate in the competition.

Kiniro no Corda: Primo Passo follows Kahoko's endeavors alongside Lili, as the young student must now face the challenges of competition and go head-to-head against her competitors while navigating a new world of classical music.

[Written by MAL Rewrite]

In the mysterious future, crystalline organisms called Gems inhabit a world that has been destroyed by six meteors. Each Gem is assigned a role in order to fight against the Lunarians, a species who attacks them in order to shatter their bodies and use them as decorations. Phosphophyllite, also known as Phos, is a young and fragile Gem who dreams of helping their friends in the war effort. Instead, they are told to compile an encyclopedia because of their delicate condition. After begrudgingly embarking on this task, Phos meets Cinnabar, an intelligent gem who has been relegated to patrolling the isolated island at night because of the corrosive poison their body creates. After seeing how unhappy Cinnabar is, Phos decides to find a role that both of the rejected Gems can enjoy. Houseki no Kuni follows Phos' efforts to be useful and protect their fellow Gems. [Written by MAL Rewrite]

The 150-year-long stalemate between the two interstellar superpowers, the Galactic Empire and the Free Planets Alliance, comes to an end when a new generation of leaders arises: the idealistic military genius Reinhard von Lohengramm, and the FPA's reserved historian, Yang Wenli. While Reinhard climbs the ranks of the Empire with the aid of his childhood friend, Siegfried Kircheis, he must fight not only the war, but also the remnants of the crumbling Goldenbaum Dynasty in order to free his sister from the Kaiser and unify humanity under one genuine ruler. Meanwhile, on the other side of the galaxy, Yang—a strong supporter of democratic ideals—has to stand firm in his beliefs, despite the struggles of the FPA, and show his pupil, Julian Mintz, that autocracy is not the solution. As ideologies clash amidst the war's many casualties, the two strategic masterminds must ask themselves what the real reason behind their battle is. [Written by MAL Rewrite]

Ginga Eiyuu Densetsu Gaiden (1999) is the second of two OVA adaptations of side stories from the Ginga Eiyuu Densetsu novel series. This second adaptation follows the achievements of Yang Wen-li of the Free Planets Alliance before the fateful Battle of Astarte, and continues the tales of Reinhard von Müsel and Siegfried Kircheis of the Galactic Empire. Spiral Labyrinth Yang is propelled to the spotlight after his famous evacuation of civilians from El Facil. Following an unofficial double promotion and a flurry of media attention, he chronicles his research of the Year 730 Mafia—a close-knit group of Alliance military officers centered around the famed tactician Bruce Ashbey. He investigates a startling claim by Ashbey's deceased widow that may have enormous political ramifications: that the great war hero was not killed in action but murdered. The Mutineer Reinhard and Kircheis are posted on the destroyer Hameln II, docked at Iserlohn Fortress. After gaining the respect of the crew, Reinhard's leadership is tested when the captain is severely wounded and passes command authority to Reinhard, the next-highest ranking officer on deck. The Duelist While Reinhard and Kircheis are working in the Imperial capital Odin, Reinhard learns of a mining rights dispute involving Dorothea von Schaffhausen, a friend of his sister Annerose von Grünewald. Upon hearing that Count Herxheimer intends to settle the matter with a duel, Reinhard volunteers to represent the Schaffhausen family. The Retriever After falling out of favor with the nobility, Count Herxheimer is trying to escape to the Free Planets Alliance with a stolen Seffle particle generator prototype. Reinhard is tasked with retrieving both the prototype and the defector, but is only assigned the cruiser Hässliche Entlein due to the confidential nature of the mission. The Third Battle of Tiamat To commemorate the 30th year of the reign of Kaiser Friedrich IV, the Empire announces a large-scale military campaign against the Free Planets Alliance. In the ensuing clash between the Imperial expeditionary force and three Alliance fleets, Reinhard's timely intervention shapes the tides of war. The Neighbor Concluding the OVA series and spanning episodes 29 to 31, Reinhard and Kircheis discover that while Count Herxheimer may be a member of the nobility, he is not just a normal neighbor from next door. They hatch a meticulous plan with the Galactic Empire’s best sniper to take the neighbor down. [Written by MAL Rewrite]