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


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


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

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[v  e]
Chapters and Volumes
Volume 1 1234567Extras
Volume 2 89101112131416Extras
Volume 3 17181519202122232425Extras
Volume 4 262728293031323334Extras
Volume 5 353637383940414243Extras
Volume 6 444546474849505152Extras
Volume 7 535455565758596061
Volume 8 626364656667686970
Volume 9 717273747576777879
Volume 10 808182838485868788
Volume 11 899091929394959697
Volume 12 9899100101102103104105106
Volume 13 107108109110111112113114115
Volume 14 116117118119120121122123124
Volume 15 125126127128129130131132133
Volume 16 134135136137138139140141142
Chapters not yet in tankōbon format 143144145146147148149150151152153154155156157158159160161162163164165166
[v  e]
Story Arcs
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
Treasure Island Arc
Chapters 101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138
The Truth of the Petrification Saga
New America City Arc
Chapters 139140141142143144145146147148149150151152153154155156157158159160161162163164

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