"This is the human world, and it is also a fragile building block built on the unknowable abyss——"
Cthulhu worldview + I don't know what the era background is. The setting may be complicated and the plot may be slow.
The protagonist must not have a romantic line and develop alone; but he can trade in stocks privately.
#The author who struggled with the beginning for several days is Chen (convinced)#
Intent: no spoilers (sure)