You might be able to find it on some dedicated manga reading platforms or websites. But be aware that some sources might not be legal or of good quality.
You could try looking on manga subscription services or even some fan-run manga forums. But remember, reading manga from unauthorized sources is illegal and not recommended. Always look for legitimate ways to enjoy 'Killing Stalking' if you can.
There were a few novels about zombies tracking humans that could be recommended. The first was Zombie Hiker. This novel told the story of an otaku who became a zombie but maintained his human consciousness. He began to travel around and various events happened. The other book was " Heaven's Wings System." This novel described the situation where humans became zombies and evolved under the influence of a virus brought by a meteorite. There was also " Doomsday Cockroach." This novel used the transformation of a small character in the doomsday survival as the main line, depicting a real and reasonable apocalyptic world. In addition, novels such as Doomsday and Thriller World also involved zombies chasing humans.
One popular 'Killing Stalking' fanfiction might be those that explore the backstories of the main characters more in - depth. For example, some fanfictions focus on how Sangwoo's troubled childhood led to his actions. They add more layers to the already complex characters in the original work.
Unlimited Stalking was a novel of another genre by HiAPM60. However, the search results provided did not mention any other novel recommendations similar to Unlimited Stalker. Therefore, it was impossible to recommend unlimited stalking novels.
Killing Stalking exists in both manga and anime forms. The manga provided the basis for the anime adaptation. However, both have their unique characteristics and might appeal differently to viewers depending on their preferences.