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Dr. Stone Wiki

The Universe is Written in the Language of Mathematics ( () (ちゅう) (すう) (がく) という (げん) () () かれている Uchū wa Sūgaku to iu Gengo de Kakarete iru) is the two hundred and fourth chapter of the Dr. Stone manga.


The chapter begins with the Perseus penetrating the dam blocking the Suez Canal passage. Kohaku asks the significance of Math City, to which Ryusui responds that extremely accurate calculations are needed to ensure that the space mission goes according to plan. He adds that the math education in India couldn't be beat, and that Nanami Corp. set up a university to cultivate their human resources there. He also hopes to find Sai.

On October 1st, 5750, the Perseus arrives in India and the team quickly collect spices such as cardamom and cumin to make curry. Over the meal, Kohaku says that she's glad they didn't have to wait, otherwise she'd be the older sister between her and Ruri. Suika gets worried about the statues breaking, however Kohaku assures her that Ruri would have ensured everyone was in a safe position.

The team try to locate Sai using Ryusui's knowledge of him and Chelsea's and Senku's combined science power to figure out how the land changed. They quickly find him, dress him, and revive him. Sai is initial thankful for being saved, however the moment he lays eyes on Ryusui he begins screaming and running. Ryusui asks that he be caught, and Kohaku quickly pins him with her leg.

Sai protests from the floor, ranting about fleeing from Japan and never returning to Nanami Corp. as long as Ryusui was around. Sai then reveals that Ryusui is his younger brother.

Characters in Order of Appearance[]

Chapter Notes[]

  • The team successfully break through the dam.
  • The Perseus arrives in India on October 1st, 5750.
  • Math City is needed to perform the intense and accurate calculations for the space mission.
  • It was approximately 9:30 A.M. when India was petrified.
  • The team collect statues from around the school.
  • Ryusui's older brother Sai is introduced.
    • He does not seem to like Ryusui.
    • Sai also states he ran away from the Nanami Corp.


  • When Sai is found, he is on top three other statues with their arms out; in homage to an Indian deity.
  • Kohaku makes another subtle jab at Chrome's love for Ruri.

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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
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Village Games Arc
Chapters 34353637383940
Episodes 131415
Village Origins Arc
Chapters 4142434445
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Stone Wars Saga
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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
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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