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Kaseki (カセキ) is the artisan of Ishigami Village. With expert skill and precision formed by his numerous years of experience as a craftsman[13], he is a key member of the Kingdom of Science, responsible for creating many of their scientific inventions.


Kaseki Icons

Kaseki is a short old man with a large, white beard. He's completely bald, with bushy white downturned eyebrows that get thicker towards the ends. His eyebrows normally cover his eyes, leaving only shadows visible. He has a large, bulbous nose and slightly pointed ears. Marks of age cover his face: forehead creases, bags under his eyes, crow's feet, and smile lines.

His outfit consists of a brown tunic and hood, similar to a Christian monk's habit. He has a pouch tied around his waist with his craftsman's tools held at the front. Like the rest of the villagers, he wears white platform sandals.

Although initially appearing to be frail, when fired up, he bursts through his clothes, revealing a muscular body. This transformation usually results in him wearing only the lower half of his outfit and showing off the village rope that is tied around his neck. During this transformation, his eyebrows furrow and tilt upwards, flaring at the ends, and leaving at least one eye visible.


Kaseki is an honest older man who is prideful in his work and skill as an artisan. Unassuming unless provoked, he displays boundless energy when excited about his work.

Originally wary of Senku, Kaseki quickly becomes a loyal and prominent member of the Kingdom of Science. His love for crafting since his childhood helps him form strong bonds with advocates of science. Having been relatively isolated for much of his life due to his interests, he now considers Senku and Chrome as close friends, despite their age differences.[14] He is alike to them in the fact Kaseki is passionate about his craft and despairs when it fails.

A genius craftsman, Kaseki picks up techniques with little effort. Upon seeing glass for the first time, he immediately understood how to work best with the material.[15]

Kaseki, as one of the oldest members of the Kingdom of Science, is relatively wise. He often imparts wisdom on the other members and is unafraid to admit his own shortcomings.[16]

Despite his pride, Kaseki often seeks external validation for his work, particularly from women.[17][18]

Abilities and Skills[]

  • Master Artisan: Kaseki is a master artisan with over fifty years of experience. He designed and built much of Ishigami Village, including the island's bridges. He also made Kohaku's shield, originally for her father Kokuyo as a reward for winning the village tournament and becoming chieftain. Kaseki picks up new techniques extremely quickly, inherently understanding how to use materials he's never seen before just from observing their physical properties. He can craft objects solely from Senku's diagrams with little practice. He's even able to create extremely complex structures, including engines and vacuum tubes. Senku admits that Kaseki's skills far surpass his own.
  • Intelligence: Along with Chrome, Kaseki is one of the original two members of Ishigami Village with scientific knowledge. He's shown to be extremely knowledgeable, particularly about crafting techniques.
  • Physical Abilities: Kaseki's physical abilities are high, despite his old age, due to his physically-demanding work, and they were further heightened after Kaseki was revived thanks to the healing properties of the petrifaction process. He is strong enough to tear through ropes. However, he has limited combat experience.

Chapter Appearances[]

Chapter Appearances
Kingdom of Science Arc
13. Part 1: Stone World: The Beginning Absent
14. Those Who Have Faith Absent
15. Two Kingdoms of the Stone World Absent
16. Kohaku Absent
17. Nasty Looks Pictured
18. Sorcery Showdown Absent
19. Two Million Years of Being Absent
20. Stone Road Debut
21. Dawn of Iron Absent
22. Survival Gourmet Absent
23. The Smooth Talker Absent
24. Lightning Speed!!! Absent
25. By These Hands, the Light of Science Absent
26. A Shadow Alliance Absent
27. A Certain Scientists Wish Absent
28. Clear World Absent
29. Senku's Lab Appears
30. Death Green Pictured
31. Friends Have Each Other's Backs Pictured
32. Brain & Heart Appears
33. Baaad Chemicals Appears
Village Games Arc
34. Sneaky Grand Bout Strategy Appears
35. The Masked Warrior Appears
36. Kinro and Ginro Absent
37. Science-User Chrome Absent
38. Master of Flame Absent
39. And the Winner is... Appears
40. Two Million Years in the Making Appears
Village Origins Arc
41. Doctor Stone Appears
42. Tale for the Ages Absent
43. Humanity's Final Six Absent
44. One Hundred Nights, One Thousand Skies Pictured
45. Epilogue of Part 1 (End of Part 1) Part 2: Stone Wars Pictured
Vs. Hyoga Arc
46. Stone Wars Appears
47. Science Vs. Power Appears
48. Blades of Science Appears
49. To the Present Appears
50. Humanity's Greatest Weapon Appears
Communications Arc
51. Sweets for the Stone World Appears
52. Age of Energy Appears
53. Hard Knocks Crafting Club Appears
54. Flickering Blue Jewel Appears
55. Treasure Dungeon Push Start Absent
56. The Treasure Appears
57. Heat Heart Appears
58. Wave of Science Appears
59. Voices from Here to Infinity Appears
60. Angel's Song, Devil's Whisper Appears
61. Stone Wars Begin Absent
62. Double Chase Appears
63. Information Warfare Appears
64. Hotline Appears
65. Call From the Dead Appears
66. Liars and Truth Tellers Absent
67. Full Mobilization Appears
68. Flame of Revolution Appears
69. Steam Gorilla Appears
70. Paper Shield Appears
71. Prison Break Absent
72. Experience Points Appears
73. Top-Secret Mission Appears
74. Fateful 20 Seconds Absent
75. 20-Second Countdown Absent
76. Final Battle Absent
77. The Power of Science Absent
78. That Which Destroys or Saves Absent
79. For This Very Moment Appears
80. Humanity's Strongest Tag Team Absent
81. Fingertip Absent
82. Epilogue of Stone Wars (End of Part 2) Appears
Age of Exploration Arc
83. Dr. Stone Appears
84. People = Power Appears
85. Ultimate Resource Appears
86. Money Absent
87. Senku's Department Store Appears
88. Wings of Humanity Appears
89. Adventures Absent
90. New World Map Absent
91. Need Bread? Start with Wheat Pictured
92. Desire is Noble Absent
93. The First Shot Is Yours Appears
94. The Scent of Black Gold Absent
95. First Contact Appears
96. Eye of Science Appears
97. The Joy of Leadership Appears
98. Ryusui Appears
99. Kingdom of Science Photo Journal Appears
100. Origin of the 100 Tales Appears
Treasure Island Arc
101. Treasure Chest Absent
102. Perseus, Ship of Science Appears
103. Light of Hope and Despair Appears
104. Men of Forensics Petrified
105. The Island's Great Beauty Petrified
106. The Secret of Petrification Absent
107. To the Trump Card Science Vessel Absent
108. Two Trump Cards Absent
109. The Great Escape Absent
110. Beautiful Science Absent
111. Science Wars Absent
112. King of Three Dimensions Absent
113. Cryptography Science Absent
114. Silently, Science Pierces the Stone Absent
115. One Second, One Grain Absent
116. Miracle in Hand Petrified
117. The Kingdom of Science Strikes Back Petrified
118. Silent Soldiers Petrified
119. Science Soldiers Appears
120. Top Secret Absent
121. Medusa's True Face Pictured
122. Brain-Battle Puzzle Pieces Appears
123. The Battle of Wits' Deal Game Pictured
124. The Invention of God and the Devil Appears
125. The Decisive Three-Dimensional Battle Appears
126. A 3-D Strategy Absent
127. Medusa and Perseus Appears
128. Island-Wide Battle Royale Appears
129. Joker Appears
130. Devil's Choice Pictured
131. Nasty Crimes Pictured
132. The Strongest Weapon Is... Appears
133. Flash of Destruction Pictured
134. Commander Faceoff Petrified
135. Counting Petrified
136. Medusa Vs. Science Absent
137. Last Man Standing Absent
138. End Of Part 3 Appears
New America City Arc
139. First Dream Appears
140. New World Plots Appears
141. First Team Pictured
142. World Power Appears
143. Ryusui vs. Senku Appears
144. Ryusui & Gen vs. Senku & Kohaku Pictured
145. Bar Francois Appears
146. Bar Francois: Bitters Appears
147. Science Journey Appears
148. Pioneers of Earth Absent
149. Light Lure in Darkness Absent
150. Righteous Science User Absent
151. Dr. X Absent
152. Doctor Vs. Doctor Appears
153. Science Wars Appears
154. Spy vs. Spy Absent
155. Science Is Elegant Appears
156. Two Scientists Absent
157. Same Time, Same Place Absent
158. Who's the Scientist? Pictured
159. Lock On Absent
160. Gunshots Echo Appears
161. Craft Wars Pictured
162. Down the Earth-Stained Path Appears
163. Multifront Final Battle Appears
164. Re-Lock On Appears
165. Know the Rules, Make the Rules Absent
166. Ultimate Knight Absent
167. Different Strokes Absent
168. Corn City: Population One Million Appears
169. RISK or HEART Pictured
South America Arc
170. Staring Up at the Same Moon Pictured
171. Staring at the Same Light Appears
172. Marked with an "X" of Wisdom Pictured
173. Earth Race Appears
174. The Specter of the Panama Canal Appears
175. Ultra Race Across South America Appears
176. Net-Breaking Battle Plan Pictured
177. Medusa Mechanism Pictured
178. Science Scales Mountains Pictured
179. Bonds on the High-Wire Pictured
180. Sickening Yet Beautiful Appears
181. New World Science Appears
182. Diamond Heart Absent
183. Stone Sanctuary Appears
184. Fort Medusa Appears
185. Lovely Cleavage Plane Appears
186. To Each Their Own Blade Absent
187. Cyber Guerilla Pictured
188. What I Once Sought to Destroy Pictured
189. Our Dr. Stone Appears
190. Science Transcends Life Appears
191. Divine Scream, Down to Earth Mentioned
192. Until We Meet Again Appears
193. Our Stone World Petrified
New Stone World Arc
194. Homo Sapiens, All Alone Absent
195. Treasure Hunter, All Alone Petrified
196. Scientist, All Alone Petrified
197. A Stony Eden and Its Forbidden Fruit Appears
198. Whole New World Pictured
199. Superalloys Appears
200. Future Engine Appears
Globetrotting Arc
201. Morse Talk Appears
202. Ryusui Corp. Appears
203. Missile Heart Appears
204. The Universe is Written in the Language of Mathematics Appears
205. Universe of Zeroes and Ones Pictured
206. Dawn of the Computer Pictured
207. Linking the Circuit Diagram Appears
208. Science Transcends Humanity Appears
209. The Rocket's Hard Truth Appears
210. Not One-Way Appears
211. World Tour for Resources Pictured
212. Final Part: Stone to Space Appears
Moon Mission Arc
213. Unknown Known Appears
214. Stone World's Earth Defense Force Appears
215. Long, Long Road Appears
216. Hello, World Pictured
217. Science Underdogs Appears
218. WWW (World Wide Workshop) Appears
219. Three Heroes Absent
220. A Desire for All Appears
221. Entrusting It All Pictured
222. Science Road Appears
223. 0 Appears
224. In Space Flashback
225. Docking Flashback
226. Giant Step Pictured
227. It Was You Pictured
228. Life Stone Flashback
229. Why-Man Absent
230. Human Flashback
231. A Future To Get Excited About Flashback
232. Final Chapter: Dr. STONE Appears


  • His name, Kaseki, is the Japanese word for fossil.
    • This is a joke about his age.
  • Kaseki has a habit of ripping apart his clothes when he gets excited, even while wearing difficult-to-produce clothing crafted by Yuzuriha.
  • He ranked 9th in the 1st popularity poll and 14th in the second poll.
  • Kaseki appears to be particularly fond of their vehicles, as he is shown distraught when they give the first car an upgrade,[19] after they repurposed parts of the mobile lab,[20] when the mobile lab was eventually sacrificed,[21] and when the sunken Perseus was refloated only to be scrapped;[22] however, he is usually comforted with the idea of them being rebuilt or recycled into something better.


  1. Dr. Stone Manga: Volume 22 — Extras
  2. Dr. Stone Manga: Volume 4 — Q&A
  3. Dr. Stone Manga: Chapter 99, Page 18
  4. 4.0 4.1 Dr. Stone Manga: Chapter 197, Page 6
  5. 5.0 5.1 Dr. Stone Manga: Chapter 178, Page 18
  6. Dr. Stone Manga: Volume 19 — Extras
  7. Dr. Stone Manga: Chapter 103, Page 15, Kaseki is Petrified along with majority of the Perseus Crew.
  8. Dr. Stone Manga: Chapter 119, Page 6, Kaseki is revived by Senku.
  9. Dr. Stone Manga: Chapter 134, Page 4, Kaseki is shown to be petrified
  10. Dr. Stone Manga: Chapter 138, Page 7, Kaseki is revived again.
  11. Dr. Stone Manga: Chapter 192, Page 21, Kaseki is petrified along with the rest of the world.
  12. Dr. Stone Manga: Chapter 197, Page 6, Kaseki is revived by Senku.
  13. Dr. Stone Manga: Chapter 29, Page 12
  14. Dr. Stone Manga: Chapter 57, Page 11
  15. Dr. Stone Manga: Chapter 29, Page 11
  16. Dr. Stone Manga: Chapter 32, Pages 7-9
  17. Dr. Stone Manga: Chapter 40, Page 9
  18. Dr. Stone Manga: Chapter 46, Page 4
  19. Dr. Stone Manga: Chapter 70, Page 1
  20. Dr. Stone Manga: Chapter 119, Page 8
  21. Dr. Stone Manga: Chapter 174, Page 9
  22. Dr. Stone Manga: Chapter 199, Page 6

Site Navigation[]

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Ishigami Villagers
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Kingdom of Science
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Unknown Francois
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