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Dr. Stone Wiki

Pure White Seashells ( (じゅん) (ぱく) (かい) (がら) Junpaku no Kaigara) is the fourth chapter of the Dr. Stone manga.


Senku adds that Tsukasa is too strong. Taiju, while still amazed at Tsukasa's strength, asks him what's so bad about it. Senku argues that Tsukasa may be a bad person and unstoppable in the non-weapon world.

In the tree house Tsukasa introduces himself properly and Senku explains the situation to him. While cooking, Senku starts a quiz: "What's the most important thing that we need in modern civilization? 10 billion points for the right answer." Tsukasa and Taiju guess, but they don't come up with the desired answer. The answer is calcium carbonate. "Big guy, this is the shell that was so useful in taking care of your beard. By just crushing it to dust, we can create something - carbonate!" He goes on to explain that there are four deadly important ways to use it: "First! Agriculture. We can get rid of hydrogen ions with calcium carbonate. In other words, it levels up the soil. Second, by heating it and mixing it to sand, we can make mortar. It's like baby cement. We could build a big oven or a house with it. Third! Soap. In this world where disease means game over, this small block that eliminates bacteria is the life stone that replaces doctors. It's Dr. Stone!" Tsukasa is shocked by Senku's wealth of knowledge. He compliments him, to why Senku shows skepticism towards him. This skepticism is compounded with Tsukasa's statement: "You could end up recreating modern civilization from scratch. Yeah ... I just thought that." Taiju recalls that Senku has left out the fourth path. But Senku insists that there are only three.

As they gather seashells by the sea, Tsukasa talks: This Stone World, it's free. To begin with, shells don't belong to someone. Even the sea or the land. Long ago, there was a poor little boy. He tried to make a shell necklace. For his sister who was going to undergo surgery ... She loved the little mermaid. And then appeared a guy just like this", he leans toward a petrified man, "A middle-aged man who had the fishing permit in the area, with his alcohol tainted breath. The boy who was gathering shells ... was in fact stealing them, or so said the middle-aged man. The boy was hit until his face changed. He couldn't make his sister into a mermaid until the very end ...", and crashes the statue in pieces. Senku alerts him that he has just killed a human being. Tsukasa rings out to him that he fully understands it and proposes to revive only young people to build a new structure of society in which nature or or other belongs to no one. Senku rejects on the ground that "he's a technology loving kid, who's excited by mecha, space and doraemon." They stare at each other for a while and Senku regrets his revival. He considers to keep the miracle water secret. But his plans are dying. Taiju runs screaming with enough miracle water for Yuzuriha towards them.

Characters in Order of Appearance[]

Chapter Notes[]

  • Tsukasa wears the skin of the lion he killed.
  • Tsukasa properly introduces himself.
  • Tsukasa hunts for them.
  • Senku explains the uses of calcium carbonate: soap, mortar, and fertilizer.
  • Tsukasa wants to rid the world of selfish older people.
    • Tsukasa destroys a statue.

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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 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
[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 20212223242526272829303132333435
Source of the Petrification Saga
Age of Exploration Arc
Chapters 8384858687888990919293949596979899 100
Episodes 35Ryusui3637383940
Treasure Island Arc
Chapters 101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138
Episodes 4142434445464748495051525354
The Truth of the Petrification Saga
New America City Arc
Chapters 139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169
Episodes 555657
South America Arc
Chapters 170171172173174175176177178179180181182183184185186187188189190191192193
New Stone World Arc
Chapters 194195196197198199200
Globetrotting Arc
Chapters 201202203204205206207208209210211212
Stone to Space Saga
Moon Mission Arc
Chapters 213214215216217218219220221222223224225226227228229230231232