Terra
Terra is a distant planet, the home of the present civilization on Talos-II — yet the relationship between these two worlds is profoundly complex.
In the distant past, the ancestors of Terran Civilization originally inhabited Talos-II, later venturing to Terra where they built a glorious civilization amidst Catastrophes. One hundred and fifty-two years ago, they crossed through the Cosmic Gate once more, returning from Terra to Talos-II. While most celebrated this as "Paving the Way", those few who knew the historical truth would whisper another term for it — "The Homecoming".
Several years later, the Cosmic Gate was destroyed during the First Aggeloi War, severing all connection between Talos-II and Terra. The surviving humanity could only reminisce about their ancestral home through fragmented records.
With an average radius approximately 1.55 times that of Talos-II, Terra bears planetary dimensions far exceeding its colonial counterpart. Yet remarkably, the cyclical rhythms of day and night, along with seasonal variations, demonstrate negligible differences between the two worlds. This synchronization is widely believed to be the result of precursor technology, an unknown mechanism that somehow calibrated both planets' rotations to match some lost celestial template. It is this mysterious harmony that allowed the people of Talos-II to seamlessly adopt the fundamental calendar systems brought from Terra.
Terra stands as the primordial birthplace of Originium, where the "Prime Veins" first emerged and vast crystalline clusters dominate the landscape. Its resource abundance dwarfs anything found on present-day Talos-II.
From the moment humanity first crossed the Cosmic Gate, scholars have tirelessly attempted to determine the celestial relationship between Terra and Talos-II through comparative astrometrics, searching the skies of Talos-II for any trace of their lost homeworld. Yet to this day, such research has made no conclusive evidence to pinpoint Terra's location among the stars.