In the era of information explosion, silence can "close" specific sensory reception channels - making eyes blind to advertisements and ears deaf to noise. He provides "sensory purification" services to elite clients, helping them block information junk and focus on important things. However, a customer who asked to "turn off all other people's negative emotions" turned into a cold capital machine after being blocked, eliminating the entire department without any burden. Silent Investigation found that the blocked sensory information did not disappear, but accumulated underground in the city, forming an "information dark side" composed of everyone's "ignorable things" and full of resentment. This dark side is looking for a host and trying to return to the human world. And that customer is the best gap.
