In the spiritual world, Evolvers can successfully open portals and pass through barriers like doors or walls mainly because they change the state of the barriers and themselves. Hard walls can be broken open as easily as sponges or air, allowing them to pass smoothly, not only reducing obstacles but also shortening distances. This is the transformation of the surrounding environment by spiritual power. In this spiritual world, everything in the environment can temporarily become as intangible as air to the Evolvers.
But in the Mirror World, everything in the environment is real, just as people seem to possess the properties of walls in the Library Tower World. They can pass through any object. Simply put, it's like achieving the state of a spiritual world opener. However, unlike openers, those in the Mirror World seem to have been decomposed by power, appearing still as a whole, yet achieving the state of walls in the Library Tower World, where objects can pass through them.
