The world is infiltrated by an abnormal phenomenon called "eclipse". They are invisible and insubstantial, but they can parasitize people's strong emotions, distort reality, and form "abnormal areas" with rules and weird stories.
A very small number of people have awakened the ability to resist "eclipse" due to mental trauma - transforming abstract pain (fear, guilt, despair) into concrete "pain creations". This is the "pain agent. The more real and profound the pain, the more powerful the creation.
