Story Structure — 5 Plot Phases
A Broken Killing Industry
Unemployed killers criticize the restrictions imposed by the old corporate system. The collapse of MK leaves Mantis determined to continue working rather than accept the end of his career.
Key Events
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Unemployed Killers Protest Rules — Unemployed killers complain about rigid industry rules and restricted job access. Characters: Lee Han-wool / Mantis
Location: Unspecified gathering place
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MK Rules Are Explained — The group discusses company-sanctioned jobs, priority assignments, and the ban on killing minors. Characters: Lee Han-wool / Mantis
Location: Unspecified gathering place
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MK Loses Its Power — The group recalls MK's collapse after the deaths of its key leaders. Characters: Lee Han-wool / Mantis
Location: MK organizational context
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Past Company Violence Recalled — The group recalls the role of a former assassin in a company leader's death. Characters: Lee Han-wool / Mantis
Location: Unspecified recollection
The Teacher's Test
Mantis visits his former teacher, whose nickname for him reflects their shared history. Their reunion mixes insults, playful violence, and debate about the industry's transformation.
Key Events
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Mantis Refuses Retirement — Mantis rejects the idea that his assassination career is over. Characters: Lee Han-wool / Mantis
Location: Unspecified location
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Mantis Seeks His Teacher — Mantis visits the former teacher who gave him his nickname. Characters: Lee Han-wool / Mantis
Location: Former teacher's meeting place
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Old Students Exchange Insults — The reunion becomes playful as Mantis and his former teacher trade insults. Characters: Lee Han-wool / Mantis
Location: Former teacher's meeting place
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Playful Fight Reveals Tension — Their reunion escalates into a playful fight before they discuss the changing industry. Characters: Lee Han-wool / Mantis
Location: Former teacher's meeting place
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Benjamin Offers New Work — Benjamin Jo presents himself as a fan and offers Mantis a place in a new company. Characters: Lee Han-wool / Mantis, Benjamin Jo
Location: Unspecified meeting place
A Rival Company Rises
Benjamin offers Mantis a position in a new company. Mantis accepts, seeking not only employment but also the power to build the next MK.
Key Events
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Benjamin Offers New Work — Benjamin Jo presents himself as a fan and offers Mantis a place in a new company. Characters: Lee Han-wool / Mantis, Benjamin Jo
Location: Unspecified meeting place
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Mantis Chooses Expansion — Mantis accepts the offer, aiming to build a company that can become the next MK. Characters: Lee Han-wool / Mantis, Benjamin Jo
Location: New company context
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The Team Becomes Entangled — Shin, Kim, and Yang become involved in the consequences of Mantis's decision. Characters: Lee Han-wool / Mantis, Shin Jae-yi, Kim Dong-yeong, Yang Soo-min
Location: Unspecified group setting
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Shin Faces Rivalry — Shin struggles with personal feelings and professional rivalry toward Mantis. Characters: Lee Han-wool / Mantis, Shin Jae-yi
Location: Unspecified group setting
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Kim Hides His Feelings — Kim resents being left behind and conceals his feelings for Shin. Characters: Shin Jae-yi, Kim Dong-yeong
Location: Unspecified group setting
Loyalties Under Pressure
Shin's rivalry and Kim's concealed feelings destabilize the group, while Yang criticizes their childish conflict. Mantis simultaneously advances through high-level assignments.
Key Events
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Yang Calls Out Immaturity — Yang warns that the group's childish conflict is affecting everyone. Characters: Shin Jae-yi, Kim Dong-yeong, Yang Soo-min
Location: Unspecified group setting
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Mantis Takes High-Level Assignments — After joining Benjamin's company, Mantis begins accepting high-level assignments. Characters: Lee Han-wool / Mantis, Benjamin Jo
Location: New company context
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Mantis Orders Strategic Obedience — Mantis tells the others to remain obedient to MK until his new company is strong enough. Characters: Lee Han-wool / Mantis, Shin Jae-yi, Kim Dong-yeong, Yang Soo-min
Location: Unspecified organizational setting
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Personal Revenge Takes Priority — Mantis makes clear that settling a personal score may override his loyalty to Benjamin. Characters: Lee Han-wool / Mantis, Benjamin Jo
Location: Unspecified organizational setting
The Student's Reckoning
Mantis pursues a personal score through a dangerous operation that violates industry rules. His confrontation with his former teacher turns shared history into a final test of skill and loyalty.
Key Events
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Rule-Breaking Operation Begins — Mantis confronts his former teacher during a dangerous operation that breaks industry rules. Characters: Lee Han-wool / Mantis
Location: Dangerous operation site
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Body Disposal Plan Revealed — Mantis plans to divide the body and send only the head after the confrontation. Characters: Lee Han-wool / Mantis
Location: Dangerous operation site
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Former Student Faces Teacher — The former teacher condemns the industry's ranking of human lives and demands Mantis show his true skill. Characters: Lee Han-wool / Mantis
Location: Dangerous operation site
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Mantis Prepares The Killing Blow — Mantis prepares to kill his former teacher as loyalty, resentment, and shared history collide. Characters: Lee Han-wool / Mantis
Location: Dangerous operation site
The secret society of contract killers falls into chaos, unleashing a new breed of assassins. With old rules in ruins, who dares claim the shadows?