The Kingdom of Science Strikes Back (反撃の科学王国 Hangeki no Kagaku Ōkoku) is the 117th chapter of the Dr. Stone manga.


Now revived, Ryusui assesses the situation, aiming to revive Kaseki next. However, his statue, along with all of the others, are guarded by Mozu and Minister Ibara aboard the Perseus. Unable to hold their breath for long enough to swim underneath the ship, Senku and the science team set out to develop an oxygen tank.

Using parts from the mobile lab, the team completes the tanks and pump. After ten hours of pumping, the tanks are ready for use.

The next day, Ryusui and Soyuz use the tanks to swim underneath the Perseus. Soyuz's exceptional memory helps them to find the broken statues lying in a nearby reef. All of the crew appear present, including Kaseki. With the master artisan found, it's time to strike back against the Petrification Kingdom!

Chapter Notes

  • Oxygen tank acquired!! Senku creates an oxygen tank using parts from the lab car.
  • Ryusui is freed and aids his friends.
  • Kaseki's statue is found.

Characters in Order of Appearance

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Chapters and Volumes
Volume 1 1234567Extras
Volume 2 89101112131416Extras
Volume 3 17181519202122232425Extras
Volume 4 262728293031323334Extras
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Volume 6 444546474849505152Extras
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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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