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The Strongest Weapon is... ( (さい) (きょう) () () Saikyō no Buki wa) is the one hundred and thirty-second chapter of the Dr. Stone manga.


The chapter begins with Yo shooting Ibara's hand, forcing him to drop the Petrification Weapon into the ocean. With the last bullet used, Yo rushes over to rescue the petrification weapon from sinking too deep. He tries to use it, but realizes he doesn't know how to.

Hyoga and Moz continue to fight, Moz with the upper hand thanks to his "genius natural talent". Hyoga dives into the water to escape him, swimming towards shore. He hopes that Senku had a plan in mind, and races after them.

With a bamboo pipe and some dry lubricant made of graphite, Magma throws the tube to Hyoga, who catches it perfectly on the butt of his spear. Now armed with his preferred weapon, Hyoga challenges Moz once more and ends up overpowering him easily. Awed by Hyoga's sudden increase in power, Hyoga explains it's through generations of incremental technique improvements that he's gotten so strong. Moz ultimately loses.

Near the Perseus, Yo is still floundering about trying to get the medusa to work and scaring people away pretending his gun works. Ibara dives after him and whispers something to the device as he passes, activating it.

Characters in Order of Appearance[]

Chapter Notes[]

  • Yo gains control of the petrification weapon.
  • Senku gives Hyoga a lubed pipe so he can use his weapon better.
  • Hyoga defeats Moz.


  • The cover page is a reference to City Hunter, with Senku dressed as Ryo Saeba and Kohaku as Kaori Makimura. The 100t hammer is a repeated gag.

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Story Arcs
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Source of the Petrification Saga
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The Truth of the Petrification Saga
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