The Undying Target: Everything You Need To Know About 'What Can't Kill Me' Manhwa Chapter 1

As of December 2025, the Manhwa world is buzzing about a new dark romance series that flips the 'assassin falls for target' trope on its head: What Can't Kill Me (Korean: 날 죽이지 못하는 것은). While the query specifically mentions "manga 1," this thrilling series is, in fact, an original Korean Webtoon, or Manhwa, that has quickly garnered attention for its intense psychological drama and supernatural conflict. The first chapter, often the most critical part of any series, immediately establishes a high-stakes, morally ambiguous dynamic between a professional killer and her seemingly immortal prey. This article breaks down the essential plot points, characters, and shocking setup of Chapter 1.

The series plunges readers into a world where ancient demonic lore collides with modern-day high school life. Chapter 1 serves as a masterclass in genre fusion, introducing a protagonist who is far from the typical innocent heroine, and a love interest who is literally the Devil. It sets the stage for a twisted, complex relationship where the very act of trying to kill someone becomes the foundation for a dangerous, inescapable obsession.

The Creative Team and Core Conflict: A Biography of Blood and Ink

The Manhwa What Can't Kill Me is the product of a compelling creative partnership, establishing a strong foundation for its dark fantasy and romance elements. The series is officially an Original Webtoon, which explains the vibrant, full-color art style typical of the Manhwa format.

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• Original Title: 날 죽이지 못하는 것은 (Literal: What Can't Kill Me)
• Format: Manhwa / Original Webtoon
• Author (Story): Chang-i
• Artist (Illustrator): Nakseo Jang-i
• Genre: Dark Romance, Fantasy, Supernatural, Psychological, Action, High School (Disguise)
• Protagonist: Kim Cheon-sa (The Demon Slayer/Assassin)
• Antagonist/Love Interest: Wang Ma-hyeon (The Undying Satan/Demon Lord)
• Initial Release Year: 2025 (as of the latest cataloging)

The central premise, immediately established in the opening chapter, is the ultimate paradox: a professional assassin whose mission is to eliminate a target who cannot die. This conflict is the engine of the entire narrative, forcing the assassin, Kim Cheon-sa, to confront not just an immortal being, but the nature of her own purpose and burgeoning feelings.

What Can't Kill Me Manhwa Chapter 1: The High School Disguise and the Satanic Target

The first chapter of What Can't Kill Me is a crucial exposition that wastes no time in establishing the dual life of its lead character and the impossible nature of her mission. It begins not with a bloody battle, but in the mundane, brightly-lit halls of a high school.

The Introduction of Kim Cheon-sa

Kim Cheon-sa is introduced as a seemingly ordinary, perhaps slightly aloof, high school girl. This persona, however, is a meticulous facade. Chapter 1 reveals that Cheon-sa is, in reality, a highly skilled professional killer, or a demon slayer, depending on the translation and context. Her mission is of the highest order: to locate and exterminate the Demon Lord, a being of immense power who poses an existential threat to the world. Her choice of disguise—a high school student—is strategic, allowing her to operate under the radar while getting close to her mark.

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The Revelation of Wang Ma-hyeon

The chapter quickly pivots to introduce Wang Ma-hyeon. In stark contrast to his true identity, Ma-hyeon is also operating under a human guise, often portrayed as a charismatic, perhaps slightly mysterious, male student or figure within the school environment. The shock of Chapter 1 is the immediate revelation of his true nature: he is the undying Satan, or the Demon Lord in human form. This is the ultimate target, the one who, as the title suggests, "Can't Kill Me."

The Initial Spark of Twisted Love

The true genius and dark appeal of Chapter 1 lie in the moment the central conflict shifts from a simple assassination mission to a complex, twisted romance. Cheon-sa, the cold-blooded killer, finds herself inexplicably drawn to the very person she is sworn to destroy. The chapter hints at, or outright shows, her initial attempts to "kill" him, which prove futile due to his immortality. Instead of fear or renewed determination, his resilience and perhaps a perverse amusement at her efforts ignite a dangerous obsession within her.

The core theme established is that Ma-hyeon, the Demon Lord, is not only aware of her intentions but is also intrigued by her twisted sense of love—the desire to possess and destroy something simultaneously. This mutual, dangerous attraction is the hook that secures the reader for the rest of the series, promising a rollercoaster of psychological tension and supernatural action.

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Thematic Entities and LSI Keywords: Why This Manhwa is a Must-Read

The immense popularity of What Can't Kill Me stems from its successful integration of several high-demand thematic entities and narrative tropes. The first chapter alone sets up a rich tapestry of conflict and character depth, appealing to fans of dark fantasy and supernatural romance.

• The Immortality Trope: Ma-hyeon's status as the undying Satan immediately raises the stakes. If the target cannot be killed, the assassin must find a new purpose, leading directly to the romance sub-genre.
• Assassin Falls for Target: This classic trope is given a fresh spin. It's not just a forbidden love; it's a love born from a failed, and repeatedly attempted, murder. This adds a layer of dark psychological drama.
• Demon Slayer vs. Demon Lord: The fundamental conflict of light versus darkness is personified in Cheon-sa and Ma-hyeon. She represents the forces trying to contain the supernatural threat, while he is the embodiment of it. Their union is a literal conflict of interest.
• High-Stakes Dual Identity: Cheon-sa's high school disguise contrasts sharply with her lethal skills, creating constant narrative tension. The reader is always aware that the sweet schoolgirl could, at any moment, transform into the ruthless professional killer.
• Manhwa Art Style: The vibrant, full-color vertical scroll format typical of a Webtoon enhances the visual impact of the fantasy elements and the emotional intensity of the close-up character work.

The initial chapter of What Can't Kill Me is a powerful opening that establishes a narrative built on paradox and obsession. It successfully transitions the series from a simple action manhwa to a deep, multifaceted supernatural thriller. Fans of intense character dynamics, forbidden love, and stories featuring powerful, morally grey characters like Kim Cheon-sa and Wang Ma-hyeon will find the dark, twisted world crafted by Chang-i and Nakseo Jang-i utterly compelling.

The series promises to explore the limits of love and destruction, constantly asking: if the thing you desire most is also the thing you are sworn to destroy, what then becomes of your purpose? The answer, as Chapter 1 suggests, is a dangerous, thrilling, and utterly addictive pursuit.