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Linking the Circuit Diagram ( (つな) がる (かい) () () Tsunagaru Kairozu) is the two hundred and seventh chapter of the Dr. Stone manga.

Summary

The chapter begins with the team in Corn City assembling several parametrons. In India, Sai puts together several half adder circuits to create a circuit capable of adding up to 255. They need to send the circuit diagram over to Corn City, so Xeno recommends creating a fax machine. He already sent instructions over to Brody with Taiju, so all that's left is for Senku to make one. Using sphalerite and other materials, they quickly make thermal paper and the fax machine itself.

As the team in Corn City are making the computer, Senku's team can continue their globetrotting. Sai bids them farewell, insisting that he stay in India to work. However Ryusui insists that Sai come with them. Some time later, they receive their first fax from Corn City, featuring an image of most of the group there.

Seeing the image makes Sai and Ryusui go quiet, so Gen sneaks away later to dig for information. Before he can begin questioning Sai, Chelsea breaks into the room and starts asking blunt questions. Sai then explains over tea that Ryusui and Sai weren't born to the matriarch of the Nanami family and were excluded from group photos. Sai also found Ryusui's constant demands to be overwhelming, so he flew to India to escape. Gen and Chelsea then explain to Sai that Ryusui was never demanding those things of Sai, only that he wished to spend time with his brother.

That evening, Ryusui enters Sai's room and asks to play chess once more, and Sai begins turning him down but then cedes. When the Perseus is all packed up to go, Sai had a change of heart and joins the others onboard, officially joining the Kingdom of Science.

Characters in Order of Appearance

Chapter Notes

  • A larger adder circuit is made.
  • A proper fax machine is built to send schematics over to Corn City.
  • It is revealed that Sai and Ryusui are not born to the matriarch of the Nanami family and were treated different.
    • Sai hated Ryusui for trying to exploit him.
  • Gen and Chelsea speak to Sai, making him realize that it wasn't exploitation, but a want to spend time with his brother.
  • Sai joins the Kingdom of Science onboard the Perseus.

Trivia

  • Despite the chapter publishing on his birthday, Magma is not present in this chapter.

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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
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 35
Treasure Island Arc
Chapters 101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138
Episodes
The Truth of the Petrification Saga
New America City Arc
Chapters 139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169
Episodes
South America Arc
Chapters 170171172173174175176177178179180181182183184185186187188189190191192193
Episodes
New Stone World Arc
Chapters 194195196197198199200
Episodes
Globetrotting Arc
Chapters 201202203204205206207208209210211212
Episodes
Stone to Space Saga
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