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Medusa Mechanism (MEDUSA (メドゥーサ) MECHANISM (メカニズム) Medoūsa Mekanizumu) is the twentieth volume of the Dr. Stone manga.

Volume Summary[]


Senku and Dr. Xeno are the Stone World's top two scientists, and now they're teaming up in search of the origin of the petri-beam that zapped all of humanity. But the road to where it all started is proving to be a bumpy one! Can the crew traverse nature to make it deep into South America, all while dodging the ferociously dogged Stanley?


Author's Comment[]

Volume 020.1 Intro Image

For a while now, I've been thinking we need to start viewing the comic arts as a singular, unified concept under an umbrella term. I've suggested "toon", which is what I've used personally for years now.

Because of these differentiated labels, we can't seem to see each other as being similar (even though we are all basically family) because of fundamental industry concerns. But the future we're headed for has no need of that. Try to imagine and era in which Western comics, manga, graphic novels and webtoons are distributed to everyone regardless of territory. We can learn from each other, grow together, and share in our mutual successes. Authors, editors, and fans can meet, interact, laugh, and debate. There will be a distinct feeling that deep down, we are all one.

I believe that's the grand future in store for us. I've been saying that the 21st century will be the era of manga. This is that moment. That's why the industry that ties us together needs a single name. Those of us who speak through our art are already united.

Riichiro Inagaki
Volume 020.2 Intro Image

I made some of Senku and Xeno's super soap bubble formula in real life, and my kids and I played with it in the bathroom.

Instead of blowing the bubbles with your mouth, I recommend using a big hoop.

The one in the picture is just a coat hanger twisted into a circle and taped together.

How'd the bubbles turn out? Extra gigantic!

The kids loved it!!

Extra Pages[]



  • On Brody's Knight File, his height is erroneously listed as 822 cm. In the Japanese version, it is 182 cm.


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Chapters and Volumes
Volume 1 1234567Extras
Volume 2 89101112131416Extras
Volume 3 17181519202122232425Extras
Volume 4 262728293031323334Extras
Volume 5 353637383940414243Extras
Volume 6 444546474849505152Extras
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Volume 11 899091929394959697Extras
Volume 12 9899100101102103104105106Extras
Volume 13 107108109110111112113114115Extras
Volume 14 116117118119120121122123124Extras
Volume 15 125126127128129130131132133Extras
Volume 16 134135136137138139140141142Extras
Volume 17 143144145146147148149150151Extras
Volume 18 152153154155156157158159160Extras
Volume 19 161162163164165166167168169Extras
Volume 20 170171172173174175176177178Extras
Volume 21 179180181182183184185186187Extras
Volume 22 188189190191192193194195196Extras
Volume 23 197198199200201202203204205Extras
Volume 24 206207208209210211212213214Extras
Volume 25 215216217218219220221222223Extras
Volume 26 224225226227228229230231232Extras
Volume 27 Terraforming4D Science: 14D Science: 24D Science: 3