Ps: The name of the last chapter's sin of peeping was incorrect; it should be called [Tendou]. The overall design of "Guilt World" is directly linked to Dongying.
"Pupil Surgery"
In Holy City, the demon circles, or any other worlds, it is often regarded as an advanced technique.
Aside from the very few individuals who are naturally born with or by chance are capable of performing pupil surgery, most users have to go through a lengthy process to find out if they can master it.
Typically, their initial goal is to become 'Investigators', focusing mainly on training their own perception.
During their growth period.
Some excel in the visual aspect and concentrate on the development of [The Eye]... When they reach a certain stage, they gradually realize that their eyes are capable of not just observing but also slightly influencing the environment.
As they continue to grow, their eyes may even become like limbs, able to manipulate physical matter.