The story introduces us to Yoon Bum, a frail, isolated young man with a history of stalking his college crush, Oh Sangwoo. Sangwoo is portrayed as the literal opposite of Bum: handsome, charismatic, athletic, and universally loved. Bum’s fixation is framed through a lens of desperate loneliness and mental instability, as he spends his days trying to crack the passcode to Sangwoo’s front door. The Turning Point: Entering the House

Chapter 1 is not merely an introduction; it is a masterclass in psychological tension and narrative misdirection. Here is a comprehensive breakdown of how Killing Stalking Chapter 1 hooks its audience, establishes its core characters, and delivers one of the most memorable twists in webtoon history. The Illusion of a Stalker's Romance

Koogi uses desaturated tones and sharp, expressive character acting to convey Bum’s anxiety.