[Speculation]
Lumi is a miner in my colony. She spends most of her days deep in the mines, mining ores in the dark all by herself, only seeing other people again at meal times or during raids. To keep her mind off the crushing loneliness, Lumi daydreams about romantic situations while she works. Princes, princesses, fairy-tail castles and so on. Then one day she came back from the mines babbling like crazy while wearing a strange look upon her face. Apparently there was a tree, and a prince, and goldfish down the mine. Lots of goldfish. Hundreds of goldfish swimming up and down the passageways as if the air was water.
To the amusement of the other colonists it turned out that she had been mining neutroamine pockets and the vapours in the enclosed space had sent Lumi a little loopy that day.
[/speculation]