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The Gunpowder Adventure (火薬冒険 Kayaku Bōken) is the seventh chapter of the manga Dr. Stone.

Summary

To enforce the plan to create gunpowder, they make their way to Hakone. Senku complains about the lack of accurate coordinates of the sextant: "Are we around Kamakura?" At this question, Yuzuriha runs and encounters a monumental outdoor bronze statue, The Great Buddha of Kamakura. Since the statue is made of bronze, it lacked the chemical reaction to break apart and the reason for the lack of greenery is that the copper ions spread out which are poisonous to most forms of vegetation.

Yuzuriha notes that the cherry blossoms seem different and Senku explains that they failed to self-pollinate and suddenly went extinct.

Taiju notes that Yuzuriha's toe is still petrified. For this they use their own created remedy.

Meanwhile, Tsukasa has come to grips with their plan.

Characters in Order of Appearance

Trivia

  • Through the bronze from the statue Senku wants to create a mirror for the sextant's accuracy.

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Arcs & Sagas
Prologue Saga
Stone Formula Arc
Chapters 1234
Episodes 12
Vs. Tsukasa Arc
Chapters 56789101112
Episodes 345
Ishigami Village Saga
Kingdom of Science Arc
Chapters 131415161718192021222324252627282930313233
Episodes 5678910111213
Village Games Arc
Chapters 34353637383940
Episodes 131415
Village Origins Arc
Chapters 4142434445
Episodes 1617
Stone Wars Saga
Vs. Hyoga Arc
Chapters 4647484950
Episodes 1819
Communications Arc
Chapters 5152535455565758596061626364656667686970717273747576777879808182
Episodes 2021222324
Source of the Petrification Saga
Age of Exploration Arc
Chapters 8384858687888990919293949596979899 100
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Treasure Island Arc
Chapters 101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138
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