Shen Yanan discovered a virus. When "people" are infected with this virus, they will gradually disappear and become corrupted, and finally become nothingness. In order to develop a medicine that can resist this virus, he traveled from world to world, but on the way, he seemed to have accidentally discovered the "secret" of this world. He hopes to find answers that can unlock the world, but when that day comes, it may be the end of them.
Concept: What is this world like?