There are no remaining chapters, its up to date
If you're ever wondering what chapters are out at look at Koogi's Twitter or Lezhin (you don't have to pay to see the list of episodes). Killing Stalking is released every Thursday on Lezhin.
https://www.lezhin.com/en/comic/killingstalking
https://twitter.com/kooo_gi
I badly want to finish this goddamn manga but fates are against me since I happened to be living in a third world country. In short, I can't afford paying for the manhwa to read it. Does anyone here know where I can read the remaining chapters? I'd appreaciate it a lot! *cries in blood and tears*