I have a headcanon that Nor’s obsession with fire stems from a trauma… that during the witch trials in Norway people started noticing he didn’t age like he should and arrested him for witchcraft, and burned him at the stake. The trauma of having his own people do that to him was so awful the only way he could cope was to embrace what hurt him and while it helps him cope; everytime he watches the fire he remembers the feeling of the flames burning his body as his people cheered