Doctor Stone (DOCTOR (ドクター) STONE (ストーン) Dokutā Sutōn) is the forty-first chapter of the Dr. Stone manga.


Senku feeds Ruri the newly created Cure-all Sulfa drug, much to the villages fear. He then attempts to diagnose Ruri’s illness. After listening to her breathing via a wooden cup, he concludes that their is a water build up in Ruri’s lungs. Soon after he spots a dead rat carcass and rushes back to his lab.

To Gen’s disgust and Kohaku’s curiosity, Senku performs an autopsy on the dead rat. He discovers the rat has infected lungs and realises that bacteria was what infected Ruri. He informs Kohaku, Gen and Chrome if the illness is what he suspects it is - Pulmonary Tuberclosis - they have no means of saving Ruri.

Suddenly Suika runs over to the three and asks them to come quick. They sprint to the village to find Ruri’s condition has gotten worse, and she is choking on the ground. The village chief exclaims this is the worse she’s ever been, and she may be in critical condition. This prompts one of the villagers to accuse Senku of poisoning Ruri with his “Sorcery Drug.”

As Senku kneels down to examine her, Kokuyo attempts to strangle Senku out of anger. Senku explains Ruri’s sudden turn for the worse is due to the bacteria fighting back. He then realizes that this means Ruri has Pneumonia - something the Sulfa-drug can easily counter, if enough of it is given. The chief tries to stop Senku, but Kohaku, Chrome and the others convince the chief to let him try.

Once Ruri is cured, Senku concludes it was Kohaku bringing back the warm water every day that kept her alive those whole 18 years. As Ruri emerges from the lab, both her and Kokuyo cry with tears of joy. Ruri remarks its been longer than she can remember since stepped outside the village or ran. Kokuyo joyfully declares that Senku is the new chief of “Ishigami Village.” This causes Senku to look up, confused. Ruri then explains she has always known, somehow, Senku’s full name was Senku Ishigami.

Characters In Order Of Appearance


Science Stuff

  • Pneumonia‘s full name is Streptococcus Pneumoniae, a bacteria that can inject its genes into other harmless bacteria to increase its numbers.
  • When put together, ”Ishigami” and “Senku” translate to “Stone God”
  • The Village is called Ishigami Village.
    • Ishigami is Senku's last name.

Site Navigation

v  e
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
Treasure Island Arc
Chapters 101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138
The Truth of the Petrification Saga
New America City Arc
Chapters 139140141142143144145146147148149150151152153154155156

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