but demons trapped in ice also sound rather stupid, like once they have their fun they just go back to the frozen wastes to freeze up and do it again next year? wouldn't surprise me though, as the devs were insistent about the tsaesci as snakemen despite any evidence in-game.
1. Starting hypothesis: the Kamal are imprisoned in ice and they don't like it.
2. Consequence from 1: when summer arrives and they thaw out, they try to move to a warmer clime so that they won't be frozen alive again.
3. Consequence from 2: they invade the neighboring Tang Mo lands.
4. Consequence from 3: the Tang Mo defend their homeland and fight the Kamal back.
5. Consequence from 4: the Kamal invasion fails and they have to retreat to their own land.
6. Consequence from 5: the Kamal are caught by wintertime and become frozen again.
7. Conclusion: what happens is exactly what the only source of information on the Kamal we have says is what happens.
Also, evidence in-game points that elves, humans and beastfolk are all incapable of sixual reproduction and instead pop up advlt, clad, and fully-formed in the world.