Shatterburst

Do you wish to know how the legend goes, my dear? Truely? It's not a happy tale, or a fair one. It doesn't have a 'happy ending,' not even a kind one. Do you still wish to hear how the Shatterburst came to be? Then sit down, get comfortable, and listen.
Once, before everything, before we knew the other races, when we were the only ones in this lonely world, the stars in the sky followed no one, went nowhere. Under their light, two who were closer then blood and bond danced. By day they were separate, by night, they were as close as they could be without becoming one. They danced carelessly, brilliantly, ever following the other.
And then one vanished from the face of the world. I told you, it is not a happy story. The other did not dance, not while they were alone. They waited and waited, for days they waited under the unguided stars. One night, they looked up to the stars and realized that something was wrong. You see, the two of them had danced under the stars for so long that they knew the patterns they made by heart. There were stars missing from that pattern.
The one left behind looked up and saw that these missing stars made a pattern, a pattern they had traced in the fur of the one who vanished. They saw it as a sign, for if those stars were stolen, then so had been their other. The next night, they gathered their things and set out to find them.
First, they went to the tallest mountain and climbed to the peak. There, they found the oldest and wisest one and asked for their advice. The oldest and wisest looked at them for several long moments before saying, 'There is a thief, who steals the brightest stars. I see in you a dimmed light, one I can tell was far brighter once, and it's twin, who is missing but no less brilliant. So trust that light, one who follows and leads, and follow it to your missing other.' With that, the oldest and wisest fell silent.
The one who followed thought of the dances under the stars, of how both of them both lead and followed and understood. The left the mountain and walked. They walked through sunrise and sunset, through bog and forest, through mountain and plain until they ran across a thief. They looked at the thief and knew, this was the star-thief. The thief held a bag and in that bag was all the stolen stars.
'Where are they.' the one who had walked demanded, staring down the star-thief. The thief denied knowing who they were asked
...

They bent over the lifeless both of their other and cried. It was only when they heard a noise that they looked up and saw the thief. 'I didn't mean to.' the thief said, 'I saw their light and thought them a star, so I stole it, for I am a thief. I stored it in my pouch with all the stars. But you released them all, and with them, their light. Now, they are a star and you are alone.' They said more, said they wished to right their wrongs. But the thief's words were honeyed poison, for you see, the thief coveted both their light.
The thief did not lie, oh no, the second's light was a star now, but they sought to steal the light of the first and then hunt the star-second, for together, they were the most brilliant star. The one who had searched remembered the words the oldest and wisest said, and knew the thief lied. They pretended to believe the thief, however, and asked for their help burying the one who was stolen.