In a novel, there is the realm of illumination in the realm division

Answer 1

I'm not sure which novel you're referring to. The Illumination Realm was a common concept in novels. It usually referred to the cognitive level and state of the world or characters in the novel. It was often described as a transparent, visual, and relatively objective realm that allowed people to directly perceive the world and content of the work through their senses. The levels of the Illumination Realm were usually related to the theme and worldview of the work. Different stories might have different levels of the Illumination Realm.