Bum breaks in, not to harm Sangwoo, but to be closer to him and glimpse the object of his affection in private.
opens deceptively. We are introduced to Yoon Bum , a frail, socially awkward young man suffering from severe attachment disorder and a history of childhood abuse. Yoon Bum is obsessed with Oh Sangwoo , a handsome, charismatic, and seemingly perfect former classmate from his military service days.
The story opens by introducing Yoon Bum, a frail, socially isolated young man struggling with severe mental health issues. Bum harbors an intense, borderline delusional crush on Oh Sangwoo, a handsome, popular, and charismatic classmate from his university days. Sangwoo represents everything Bum is not: confident, beloved, and effortlessly attractive. killing stalking chapter 1 top
Chapter 1 introduces , a young man who is socially isolated, struggling with mental health issues, and carrying the trauma of a difficult past. His life revolves around an intense, dangerous obsession with Oh Sangwoo , a popular, charming peer from their time in the military.
From the very first chapter, the power dynamic is clearly established. Oh Sangwoo is physically dominant, holds all the power in his home, and is the one in control of the situation. He is depicted as larger, more aggressive, and in a position of authority over the smaller, frailer Yoon Bum. Despite the story being a psychological horror, the manga borrows heavily from BL aesthetics and character tropes, which is why the “top” keyword is so closely associated with it. Bum breaks in, not to harm Sangwoo, but
This "bait and switch" is widely considered one of the most effective hooks in modern webtoons. Visual Storytelling and Atmosphere
An analysis of the surrounding the series Share public link Yoon Bum is obsessed with Oh Sangwoo ,
Driven by this obsession, Bum learns Sangwoo’s address and breaks into his home while Sangwoo is away. This act of breaking-and-entering represents the point of no return for Bum.
What makes Chapter 1 especially affecting is its ambiguous morality. Bum’s interiority is rendered with empathy: his trauma, his insecurity, the fractures of his past are palpable and accusing. The chapter does not excuse his choices, but it refuses to flatten him into mere villainy. Sangwoo, by contrast, is at first legible as charisma and later, through small dissonant details, hints at something predatory. That asymmetry—of a vulnerable narrator and an inscrutable other—creates moral vertigo. The reader is unsettled not only by what might happen but by the way sympathy and revulsion intermix. It is an unsettling ethical experiment: how does one respond when the protagonist is both victim and transgressor?
When Bum follows muffled noises into the basement, the webtoon violently shifts from a dark romance/slice-of-life into visceral psychological horror. The discovery of a bound, bruised, and bleeding woman crying for help completely shatters Bum's illusion of Sangwoo.