The witcher: Aftermath (Concept story)

The world was occupied by two human races descended from acient humans, they are phantasia populus (people of fantasy) and terra populus (people of terra). Phantasia populus were ruler of human world due to their mastery of magic. Those with source become mages, those without it can turn to alchemy, ritual and runes, to use magic indirectly without needing the source. As the result, terra populus is treated as second class citizens by their own cousins, as terra populus has no affinity towards supernatural powers. They cannot even create runes, perform rituals and practice higher alchemy. But, while they cannot use magic, their innate strong affinity in learning and understanding, allow them to create modern technology allowing them to recreate the magical phenomena with non-magical means and without bypassing the natural order of the universe. Eventually, many wars between two human races broke out, ending with victory of terra populus everytimes despite the phantasia populus having advantage of them bypassing the natural order through magic. The conflict between two ultimately ended with an unknown cosmic phenoma swallowed the phantasia populus, leading to total victory of terra populus who become sole humans of human world. But one day, another mysterious phenomena engulf the world, which the terra populus initially suspected to be white frost mention in scrolls of phantasia populus. But after their failure to stop it, and investigation that was done later, they are shocked after learning that the white frost is actually a similar but more devastating supernatural disaster. Forcing terra populus to abandon the human world and immigrate to another world with their spaceship. Thus, the terra populus left the human world and begin their search for new one to live in. Not knowing that they will soon reunite with their cousin who no longer remember their past legacy and arrived in this world before them thanks to the mysterious cosmic event that brought phantasia populus from human world to this one. Thus, a new chapter of human rivalry and dualism of human races starts anew. [PS: This is a concept story I wrote for witcher story, although I don't own witcher franchise, but I have no problem with game developers using my work as reference for their own. Also my story follow game canon not the book.]