The backstory of the main work (Legend of the Galactic Heroes), which tells about the childhood of Reinhard and Siegfried and their study at the Military Academy, as well as military service of young lieutenant Yang Wen-li and the attack of the Free Planets Star fleet on Iserlohn.
In humanity's distant future, two interstellar states—the monarchic Galactic Empire and the democratic Free Planets Alliance—are embroiled in a never-ending war. The story focuses on the exploits of rivals Reinhard von Müsel and Yang Wen Li as they rise to power and fame in the Galactic Empire and the Free Planets Alliance.
From Viz: The “golden brat” Reinhard von Lohengramm, a military prodigy and admiral of the Galactic Empire, has ambitions beyond protecting the borders or even defeating the empire’s enemies. He seeks to overthrow the old order and become a truly absolute - yet benevolent - dictator. His rival, the humble Yang Wen-li of the Free Planets Alliance, wishes to preserve democracy even if he must sacrifice his political ideals to defeat the empire. Their political and military battles play out over a galactic chessboard in an epic saga fifteen centuries in the making.
Continuation of Reinhard von Lohengramm's quest to rule space.

