Dr. Stone Wiki
Dr. Stone Wiki

The Vs. Tsukasa Arc is the second arc of Dr. Stone and the second and final arc of the Prologue Saga.

Revealing conflicting goals, Senku and Tsukasa begin clashing. At a significant power disadvantage, Senku and his friends escape to Hakone to create a weapon of science.


Taiju accidentally lets slip the secret of the Cave of Miracles as he didn't hear Tsukasa's plan. Senku pretends that they don't have enough nitric acid to make the Revival Fluid as a ploy to get Tsukasa away from seeing the recipe. They act quickly and manage to revive Yuzuriha Ogawa before Tsukasa gets back, and Senku makes Taiju and Yuzuriha decide whether to run and live somewhere else, or to fight Tsukasa.[1]

They decide to fight Tsukasa just as he arrives from the cave, bringing more nitric acid. Tsukasa throws down some rocks which Taiju recognizes as broken statue and realizes what sort of person Tsukasa is. He runs at him to fight, and takes one of Tsukasa's kicks, but doesn't fight back since fighting is wrong. Instead, Tsukasa wonders out loud if he should kill Yuzuriha instead, which Taiju responds by blocking her with his body. Tsukasa simply tells them to not get in his way and leaves. Senku suggests they make gunpowder.[2]

Faking escaping out of fear, the trio head to Hakone. They get lost on the way, but the The Great Buddha of Kamakura puts them back on the correct path. It's revealed that Yuzuriha still had some stone left on her foot, which Senku undoes with more revival fluid. She comments that it feels like the pain is washing away. Meanwhile, Tsukasa sees they've escaped and understands they left to get better weapons, and chases after them.[3]

Relaxing in the hot springs of Hakone, Taiju and Yuzuriha talk, and Taiju decides he'll confess when humanity is restored. While they do that, Senku makes gunpowder. Senku and Tsukasa acknowledge that this battle will result in someone getting killed. After accidentally setting off the gunpowder, Yuzuriha notices that there's a fire in the distance, and Senku tells them to set it off more to try signalling to whoever lit the fire, as the direction means it wasn't Tsukasa.[4]

The pair head off to collect more wood for fires, but Yuzuriha is captured by Tsukasa. He leads her back to Senku, and they try to discuss a compromise.[5] Neither agrees, and ultimately Tsukasa kills Senku by snapping his neck.[6] Slightly too late arriving, Taiju seems to get angry and throws a rock at Tsukasa, which distracts Tsukasa long enough for Yuzuriha to throw the remaining gunpowder at them, and the pair escape with Senku's body.[7] Knowing Senku would find a way to save everyone, they remember about the revival fluid and pour it onto Senku's neck, where a stone piece remained.[8]

Story Impact[]

  • Tsukasa is revealed as an antagonist to Senku, and kills him.
  • Tsukasa is given the revival fluid formula in exchange for Yuzuriha's life.
  • Yuzuriha is depetrified.
  • Senku's early life and what he was like before the Petrification is revealed.
  • Hints at the healing properties of the depetrification process are shown.
  • A new human's silhouette is shown.

Characters Introduced[]

Inventions in Order of Acquisition[]

For a complete list of inventions in more detail, see Inventions and Discoveries.

  • Crossbow
  • Sextant
  • Bronze
  • Potassium Nitrate
  • Glucose
  • Sulfur
  • Gunpowder


  1. Dr. Stone Manga: Chapter 5
  2. Dr. Stone Manga: Chapter 6
  3. Dr. Stone Manga: Chapter 7
  4. Dr. Stone Manga: Chapter 8
  5. Dr. Stone Manga: Chapter 9
  6. Dr. Stone Manga: Chapter 10
  7. Dr. Stone Manga: Chapter 11
  8. Dr. Stone Manga: Chapter 12

Site Navigation[]

[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