Story Structure — 5 Plot Phases
A Reunion and a Dangerous Device
Yuuga searches for his twin sister and reunites with Eia. He explains the SCM and persuades her to help him explore its contests.
Key Events
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SCM Spreads Again — The SCM, a device that can make a contest's loser the winner's slave, begins spreading again.
Location: Unspecified
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Yuuga Searches for Eia — After years apart, Yuuga searches for his twin sister. Characters: Yuuga Oda
Location: Unspecified
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The Twins Reunite — Yuuga is reunited with Eia, his twin sister. Characters: Eia Arakawa, Yuuga Oda
Location: Unspecified
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Two SCM Devices — Yuuga explains the devices' scarcity and value and says he wants to try one. Characters: Eia Arakawa, Yuuga Oda
Location: Unspecified
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Eia Agrees to Help — Though reluctant, Eia is persuaded to help Yuuga with the SCM. Characters: Eia Arakawa, Yuuga Oda
Location: Unspecified
Learning the Rules of Control
Eia and Yuuga encounter other holders and learn that belief about losing can matter as much as a contest's rules. They see slaves transferred when masters change and hear of loyalty to Ryuo.
Key Events
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Eia Agrees to Help — Though reluctant, Eia is persuaded to help Yuuga with the SCM. Characters: Eia Arakawa, Yuuga Oda
Location: Unspecified
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Contests Create Slaves — They encounter other SCM holders and learn that losing a contest makes a player the winner's slave. Characters: Eia Arakawa, Yuuga Oda
Location: Unspecified
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Belief Shapes Victory — They learn that victory depends on making an opponent believe they have lost, not just on game rules. Characters: Eia Arakawa, Yuuga Oda
Location: Unspecified
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Yuuga Gains Slaves — Yuuga gains slaves through contests. Characters: Yuuga Oda
Location: Unspecified
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Eia Proves Her Skill — Eia demonstrates that she is a sharp and capable partner to Yuuga. Characters: Eia Arakawa, Yuuga Oda
Location: Unspecified
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Slaves Change Masters — A change of master transfers slaves, who experience a shock. Characters: Eia Arakawa, Yuuga Oda
Location: Unspecified
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Loyalty to Ryuo — Some slaves say they are happy obeying their master, Ryuo. Characters: Eia Arakawa, Yuuga Oda, Ryuo Edogawa
Location: Unspecified
The Scheme Behind the SCM
The pair investigate the website and the device's origins. Eia learns about consciousness research and a special SCM that can control people temporarily without a contest.
Key Events
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Loyalty to Ryuo — Some slaves say they are happy obeying their master, Ryuo. Characters: Eia Arakawa, Yuuga Oda, Ryuo Edogawa
Location: Unspecified
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The SCM Website — They learn the website promoting the SCM may aim to raise its price and attract wealthy buyers. Characters: Eia Arakawa, Yuuga Oda
Location: Unspecified
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Yuuga Challenges Ryuo's Associates — Yuuga challenges people working for Ryuo. Characters: Yuuga Oda, Ryuo Edogawa
Location: Unspecified
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Eia Investigates the SCM — Eia investigates the device and learns of its research origins. Characters: Eia Arakawa
Location: Unspecified
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Consciousness Research Origins — Eia learns the SCM originated in research into human and animal consciousness. Characters: Eia Arakawa
Location: Unspecified
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A Special SCM — They discover a special SCM can control people without a contest for only a few hours. Characters: Eia Arakawa
Location: Unspecified
Eia's Challenge to Ryuo
Eia faces Ryuo's group in a contest testing whether players respond sensibly to provocation. Her victory makes her the temporary master and representative of the slaves and grants her the right to challenge Ryuo.
Key Events
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A Special SCM — They discover a special SCM can control people without a contest for only a few hours. Characters: Eia Arakawa
Location: Unspecified
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Eia Faces Ryuo's Group — Eia faces members of Ryuo's group in a contest about resisting provocative remarks. Characters: Eia Arakawa, Ryuo Edogawa
Location: Unspecified
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Eia Wins Representation — Eia wins, becomes the temporary master and representative of the slaves, and earns the right to challenge Ryuo. Characters: Eia Arakawa, Ryuo Edogawa
Location: Unspecified
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Ryuo Chooses Othello — Ryuo chooses Othello, a game Eia remembers playing with Yuuga. Characters: Eia Arakawa, Ryuo Edogawa
Location: Unspecified
An Unfinished Othello Match
Ryuo chooses Othello and warns Eia of the danger of defeat. She accepts, and the match begins without a stated outcome.
Key Events
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Ryuo Chooses Othello — Ryuo chooses Othello, a game Eia remembers playing with Yuuga. Characters: Eia Arakawa, Ryuo Edogawa
Location: Unspecified
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The Match Begins — Eia accepts Ryuo's challenge despite his threats, and their Othello match begins with the result unresolved. Characters: Eia Arakawa, Ryuo Edogawa
Location: Unspecified