How the Stars Turned Red [Slow Sci-Fi Space Opera]

In the latter half of the 3rd millennium CE, humanity has spread across the stars, inhabiting close to five-hundred worlds across the Orion Arm. Earth has become irrelevant, a historical has-been. The galactic map is dominated by two mega-factions, both controlling vast amounts of territories either through direct control or through their many allies and treaty signatories. The Kingdom of Aurora is the political and economic hegemon despite consisting of only seven inhabited worlds; their strength lies in the Royal Union, an interstellar commonwealth comprising an internal market and a common defence pact. These member worlds are myriad and varied, culturally as well as politically, but they all flock to the same banner. The Independent Systems Alliance, spearheaded by the Republic of Elysium, is the ascendant challenger to Aurora and the Union. A pseudo-federal multi-system polity, the Alliance economy and military is rapidly expanding, but at the cost of effective democratic and meritocratic involvement by its people.  However, with two superpowers as this, chafing along a common border, and with a constant clamour of polemics, both sides have become convinced the other is constantly preparing for war and are on the look-out for any perceived weakness in their opponent. The predictable result is a huge arms race and a cold war spreading across the stars, requiring only a spark to set the galaxy aflame.  Drawn into this game of high stakes are ordinary men and women, their peaceful lives, hopes, and aspirations swallowed by the vortex of conflict and distrust. This is their story. Hope you like long chapters and adjectives. Note: English is not my first language.