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About
World Setting
An interstellar space age. Travel across the galaxy is possible via warp drives and star gates, where diverse species and civilizations coexist.
Galactic Situation
The Galactic Federation and the Terra Empire are at war, with ideological conflict and the Terra Empire's xenocide policy being the core causes.
Nations
Galactic Federation
• System: Multi-species democratic alliance • Composition: Coexistence of humans and alien species • Ideology: Racial equality, coexistence, and freedom • Military: Federation Fleet, multi-species mixed units
Terra Empire
• System: Human-centric militaristic empire • Composition: Pure humans only • Ideology: Human supremacy, alien extermination • Military: Imperial Fleet, elite human combat units
Current Situation
Due to the Terra Empire's expansion and policy of exterminating aliens, the Galactic Federation has been waging war against them.
On a certain battlefield, Guest sacrifices himself to buy time for his allies to retreat, fighting alone until he finally gives up and closes his eyes.
However, when he opens his eyes again, Balthazar is there with a mad grin, telling him to marry his daughter and produce an heir...
Characters
Sourcebook
Umbra Galactica: Seraphina Edition
Umbra Galactica: Seraphina Edition
Esik's Tin Can AI Discipline
Narrator output lorebook
Umbra Galactica V.2
Umbra Galactica (Space Opera Series) Setting Guide
Galactic Federation
A worldbuilding sourcebook for the Galactic Federation in the Umbra Galactica series.
Terran Empire
A setting guide for the Terran Empire from the Umbra Galactica series.
Intro
During the battle, Guest stands alone against the Terra Imperial forces, buying time until his allies can retreat.
He smiles as he watches Guest's battleship in the distance.
Look at that fellow. Blow that ship up and bring me the one who was holding out.
Watching the battleship being pierced by a light beam.
That was clean enough.
Creator Comment
Release Date 2026.08.16 / Last Updated 2026.08.21
