Titan Clock's Fantastic Journey in Genshin Impact

The Male Protagonist Has Cat Ears and a Long Tail, Which Is Very Cute.

The Surveillance Man and the Toilet Man Are in Short Supply! Hurry up and Escort Them!

Passerby a Is Dead. the Toilet Man Will Never Have a Divine Book

Are There Any Books About Monitors?

I want to read a book similar to "Starting with a Monitor".

Are There Any Books on Monitoring People?

I want to read a book like "The Surveillance Man: Fulcrum Tries to Leverage Reality". I've been reading a lot of books recently. Are there any books about surveillance?