Zhou Yuguan was a little tired, so he took over the leaky power reception bureau and released it to the 19th floor underground.
A thousand-year-old demon who tricked high school students into joining, invited the down-and-out rich second generation to work at the front desk, interrogated the high school students' weird cousins, and looked for the master who complained about the crime...
Idea: What to do if you are under great pressure