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Righteous Science-User ( (せい) () () (がく) 使 (つか) Seigi no Kagaku Tsukai) is the 150th chapter of the Dr. Stone manga.


Descending down a river, Senku's group discusses a new threat posed by the culprit behind the machine-gun attack. Senku and the group deduce that the attacker was likely de-petrified on their own like him and that their scientific tools are more advanced than the groups.

In the midst of the discussion, Ukyo notices an engine sound coming from above. After a brief argument of what should be done, they increase their descending speed whilst being assaulted by another machine gunfire. Ginro panics as Matsukaze is grazed and Yo desperately tries to shoot the plane above with Hyoga telling him it's pointless and a waste of ammo. Soon after, Senku quickly combines water and calcium carbide to form acetylene gas, which he then gives to Kirisame who throws it at the plane, knocking the engine down and making the plane crash, much to the pilot's amusement.

After they come out of the crashed plane, the mysterious attacker explains to the person on the other end of their communication device how the attack was carried out. Senku's enemies conclude that the opposing group has an experienced scientist just like the pilot.

Once things have calmed down, a scared Ginro suggests running away as their foes might bring reinforcements now that their attack has failed, while Senku and Ryusui gleefully disagree and suggest they take the crashed plane before reinforcements arrive. As they drag the stolen plane down the river, Senku and Ryusui celebrate, having captured a part of their enemy's firepower.

Characters in Order of Appearance[]

Chapter Notes[]

  • The Kingdom of Science acquires the plane of the enemy.
    • Ryusui wants it for luxury traveling.
    • Senku wants it to learn how to reverse-engineer the technology.
  • The person in the plane has a radio and cigarettes.
  • The face of the revived American is seen. However, their name and gender are unknown.
    • There appear to be more revived people in America.
    • The people of America have created communicators.
      • Given the level of technology, the Americans likely revived quite a few years before Senku did.
    • It seems they have mistaken the Kingdom of Science for the true enemy.

Site Navigation[]

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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
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Volume 21 179180181182183184185186187Extras
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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