Plot Analysis Summary
Yū's search for religious approval and love collides with Koike's manipulation, culminating in loss, recovered memory, and reunion.
Story Structure — 5 Plot Phases
The Search for Sin
Tetsu asks his son to confess, but sees through his invented sins. Yū responds by seeking real transgressions and learning them from other boys.
Key Events
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A Priest Raises His Son — After his wife's death, Tetsu becomes a devout priest and raises his son. Characters: Tetsu Tsunoda, Yu
Location: Tetsu's church
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A Demand for Confession — Tetsu asks his son to confess his sins, but sees through his invented admissions. Characters: Tetsu Tsunoda
Location: Tetsu's church
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Seeking Real Sins — To satisfy his father, Yū becomes determined to commit real sins.
Location: Unspecified
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Learning to Steal and Fight — Yū's new friends teach him to steal, fight, and take stealth photographs.
Location: Unspecified
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The Disguise Bet — After losing a bet, Yū agrees to enter the city dressed as a woman.
Location: Unspecified
The Scorpion's First Encounter
A lost bet sends Yū into the city in disguise. He helps Yōko fight thugs, kisses her, and becomes emotionally attached while she falls for his alter ego.
Key Events
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A Fight in the City — In disguise, Yū helps Yōko fight off a group of thugs.
Location: City
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The Kiss and the Escape — Yū kisses Yōko while still disguised, then runs away.
Location: City
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Koike Takes an Interest — Koike becomes infatuated with Yū after catching him photographing her panties. Characters: Koike
Location: Unspecified
Koike's Deception
Koike becomes infatuated with Yū and impersonates Sasori to influence Yōko. Her manipulation draws Yū's family into the Zero Church.
Key Events
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Koike's Disguise — Koike impersonates Sasori to gain Yōko's favor. Characters: Koike
Location: Unspecified
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The Family Drawn In — Koike manipulates people around Yū, and his family becomes caught up in the cult. Characters: Koike, Tetsu Tsunoda
Location: Zero Church
The Church Confrontation
Yū's attempt to rescue Yōko fails, and he returns to the Zero Church armed with a sword. Koike fights him and dies by suicide after recognizing his love for Yōko.
Key Events
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A Failed Rescue — Yū kidnaps Yōko to free her from the cult, but cannot persuade her to leave.
Location: Unspecified
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Breaking into the Church — Yū enters the church with a sword and again attempts to escape with Yōko. Characters: Koike, Tetsu Tsunoda
Location: Zero Church building
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Koike's Final Act — Koike fights back, then kills herself with the sword after realizing Yū loves Yōko. Characters: Koike, Tetsu Tsunoda
Location: Zero Church building
Memory and Reunion
At a mental hospital, Yū has forgotten his past and believes he is Sasori. After Yōko is escorted away, he remembers her, escapes, and catches up with her car.
Key Events
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A Forgotten Past — Yū is taken to a mental hospital, loses his memories, and believes he is Sasori.
Location: Mental hospital
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The Hospital Visit — Yōko visits and says she loves him, but Yū does not recognize her and she is escorted away.
Location: Mental hospital
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Running After Yōko — Yū remembers Yōko, escapes, catches her car, breaks its window, and joins hands with her.
Location: Outside the mental hospital