Dr. Stone Wiki
Dr. Stone Wiki

Scientist, All Alone (ひとりぼっちのサイエンティスト Hitoribocchi no Saientisuto) is the one hundred and ninety-sixth chapter of the Dr. Stone manga.


The chapter begins with Suika determined to revive everyone, writing "e=mc2" in blood onto her poncho. She checks the instructions left behind for methods of recreating the Revival Fluid. She decides to try options 1 and 2 as they are faster processes, leaving 3 in Senku's clothing where she found it.

She the processes she attempts are the Ostwald process and the electrical arc process, neither of which succeed. The science is simply too difficult to attempt with the resources at hand. She remembers she has the third option: using feces. Collecting it from various sources, Suika buries it with ashes, following the instructions.

Years later after Suika began making nitric acid, Suika successfully revives Senku who was counting 236,109,753 seconds, over 7 years after everyone got petrified. Suika seems to have grown up a little in that time. Suika apologizes to Senku for taking too long to revive him but he is not bothered and congratulates her for her success. Overjoyed, Suika embraces Senku, happy at the reunion.

Characters in Order of Appearance

Chapter Notes

  • Suika attempts to make nitric acid using Senku's notes.
    • The first two methods fail.
    • The third method Suika implements is a modified version of what Senku did in the Stone Formula Arc.
  • Suika has grown older and is roughly twice the height she originally was.
  • Senku awakens and reveals that it has been 7 years since the second petrification.


  • Suika copies the formula on Senku's cloak onto her poncho, a callback to Senku in Chapter 14.
  • Senku is wearing a modified version of his outfit, implying Suika stitched together new patches as the cloak got worn down over the years.

Site Navigation

[v  e]
Chapters and Volumes
Volume 1 1234567Extras
Volume 2 89101112131416Extras
Volume 3 17181519202122232425Extras
Volume 4 262728293031323334Extras
Volume 5 353637383940414243Extras
Volume 6 444546474849505152Extras
Volume 7 535455565758596061Extras
Volume 8 626364656667686970Extras
Volume 9 717273747576777879Extras
Volume 10 808182838485868788Extras
Volume 11 899091929394959697Extras
Volume 12 9899100101102103104105106Extras
Volume 13 107108109110111112113114115Extras
Volume 14 116117118119120121122123124Extras
Volume 15 125126127128129130131132133Extras
Volume 16 134135136137138139140141142Extras
Volume 17 143144145146147148149150151Extras
Volume 18 152153154155156157158159160
Volume 19 161162163164165166167168169
Volume 20 170171172173174175176177178
Volume 21 179180181182183184185186187
Volume 22 188189190191192193194195196
Chapters not yet in tankōbon format 197198199200201202203204205206207208209210211212213214
[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 35
Treasure Island Arc
Chapters 101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138
The Truth of the Petrification Saga
New America City Arc
Chapters 139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169
South America Arc
Chapters 170171172173174175176177178179180181182183184185186187188189190191192193
New Stone World Arc
Chapters 194195196197198199200
Globetrotting Arc
Chapters 201202203204205206207208209210211212
Stone to Space Saga