Story Structure — 4 Plot Phases
The Contractual Entry
Four strangers accept a high-paying psychological experiment. They are led into a pitch-black room containing only a table and four envelopes.
Key Events
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Experiment Briefing — Four strangers are briefed on a 10-minute psychological task for 100,000 yen.
Location: Pre-Experiment Room
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Entering the Dark Space — The group enters a dark room containing only a table.
Location: Pitch-Black Room
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Discovery of Envelopes — They locate a table with four envelopes placed precisely on it.
Location: Pitch-Black Room
Isolation and Discovery
The group settles into the dark space, feeling the weight of the environment. They locate the envelopes on the table, marking the start of the psychological test.
Key Events
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Discovery of Envelopes — They locate a table with four envelopes placed precisely on it.
Location: Pitch-Black Room
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Initial Silence and Tension — The strangers sit in silence, grappling with the isolation and the task.
Location: Pitch-Black Room
The Unveiling
Participants open their envelopes, revealing the true nature of the experiment. The initial calm shatters as psychological pressure mounts rapidly.
Key Events
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Opening the Envelopes — Each participant opens their envelope, revealing the experiment's core premise.
Location: Pitch-Black Room
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Psychological Unraveling — The contents trigger intense internal conflict and paranoia among the group.
Location: Pitch-Black Room
The Final Countdown
As the ten-minute deadline approaches, the strangers face their breaking point. The experiment concludes, leaving a lasting psychological impact.
Key Events
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Breaking Point — The group struggles to maintain composure as the ten-minute deadline nears.
Location: Pitch-Black Room
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Experiment Conclusion — The ten minutes end, leaving the strangers forever altered by the ordeal.
Location: Pitch-Black Room