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"This world will be mine... all over again!!"

— Ryusui, Dr. Stone (Manga) Chapter 85

Ryusui Nanami ( (なな) () (りゅう) (すい) Nanami Ryūsui) is the son of the patriarch of the Nanami Conglomerate and a major player in the Kingdom of Science, along with his devoted butler Francois. He was revived by Senku for his expertise in sailing in order to captain the Perseus to the source of the Petrification. His skills at navigating by sea or air makes him indispensable as one of the Five Wise Commanders. He is also a member of the Crafting and Development Team.


Ryusui anime icons

Ryusui is a fairly tall, muscular young man with shaggy blond hair, some strands of which fall loosely into his face. He has thick eyebrows that are distinctively shaped like arrows, and he holds an intense glare in his eyes, most often seen when expressing things that he desires to have. He's also very rarely seen without a confident smile.

After being revived, he is given a new outfit, which is a garb consisting of a red double-breasted trench coat with a high collar, pants, and a captain's hat, designed by Yuzuriha.[17]

He had a stone marking encompassing most of his right hand, which disappeared since his second revival. Ryusui soon adorned war paint in reflection of his stone markings, during Tsukasa's revival.[18]



Ryusui was the Heir to the Nanami Conglomerate, and accomplished sailor. As such, he lived a wealthy and lavish lifestyle. Pre-Stone World, he was seen as a greedy playboy, rarely seen without the company of beautiful women, exotic sports cars, and excessive partying. Minami was resistant to the idea of reviving him, stating that despite his expertise in ship sailing (of which he is the most skilled), his personality was akin to that of a spoiled, pampered rich boy who ordered others to do his bidding. While initial impressions of Ryusui seem to match this description, as he demanded worship and proclaimed himself the leader of the new world.

In reality, while he is arrogant and greedy, it was his greed that fueled his ambition, which was the cause of his great success pre-Stone World. He spent a great deal of time studying, and was active in ship making from making small models to building huge ships. The money he earned, he put toward bettering himself and the company. Senku deduced that his presence would be beneficial to the Kingdom of Science as his greed does not only apply to himself but to those around him. He pushes and motivates everyone.

Though a party animal and playboy, Ryusui considers all women to be beautiful. While this seems like empty praise, he even calls the elderly and children beautiful, saying that people are all beautiful in their own way. He is seen mentioning that he “loves” and “desires” all people, including men. He even refuses to see a woman cry and his greed extends to ensuring they never cry again. Like Senku, Ryusui has the drive to rebuild society and make a world good for everyone to live in.

He shows that he is selfless and caring as he was angry at Suika for stowing away in their dangerous voyage. Later, as he and the crew were being petrified, he kicked Suika out of harm's way. He is quick to admit his faults such as when he is revived the second time, Ryusui tells Suika how proud he was of her despite her heavy burden, and declares that she is a fully fledged member of the Kingdom of Science. He also has immeasurable faith in his comrades, once telling Chrome that he knew that whenever a plan required them all to recklessly rush in, no member of the Kingdom of Science will hesitate.

While usually excitable and composed, he occasionally has a shocked expression: being disturbed by Senku's devious nature, the food of the stone world, Senku's inventions, Soyuz's amazing memory and Taiju's superhuman stamina.[19][20][21][22][23]

Likely stemming from his given name, Ryusui chooses to have a dragon aesthetic to anything he helps create since "ryu" translates as "dragon", ranging from the currency of Dragos, which have dragon pictures, to the Dragon News Network.

Abilities and Skills[]

  • Physical Strength: Ryusui has great strength, as he was able to hold his own in the tug of war with Ibara, whereas Senku was struggling[24]. He is also very fast by being able to keep up with Chrome who is a very fast runner[25].
  • Expert Sailor: Years of sailing into the ocean have allowed Ryusui to develop a keen sense on how to judge the ocean. He was able to make a precise calculation and how he can pull the situation off when sailing.
  • Skilled Pilot: Ryusui has also proven to be good at piloting an air balloon[26]. He was also able to pilot the plane the Kingdom procured from Stanley Snyder[27]. He was able to use flight moves, that left Charlotte Bony in shock.
  • Weather forecaster: After spending years of sailing, Ryusui can predict the weather even when he was not on the ocean[28].
  • Intellect: Ryusui is fairly intelligent. In addition to his skills with the weather, he is a skilled ship architect. He was able to deduce that Minami might have the Stone Formula on her since she was in charge of choosing who was depetrified for Tsukasa[29]. He was able to quickly deduce the situation both times he was depetrified[30][31]. He successfully invested on the financial market to make profit as a child[32]. He also happens to know Morse code. When Ibara pushed the petrification device towards him and Senku by throwing his head on him he improvised by attaching an earpiece to the petrification device so that Senku could activate it using his phone[33].


Sailing Skills
5/5 A
5/5 A
5/5 A
Ryusui's stats, according to Volume 10

Chapter Appearances[]

Chapter Appearances
Age of Exploration Arc
83. Dr. Stone Absent
84. People = Power Absent
85. Ultimate Resource Debut
86. Money Appears
87. Senku's Department Store Appears
88. Wings of Humanity Appears
89. Adventures Appears
90. New World Map Appears
91. Need Bread? Start with Wheat Appears
92. Desire is Noble Appears
93. The First Shot Is Yours Appears
94. The Scent of Black Gold Appears
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 Appears
102. Perseus, Ship of Science Appears
103. Light of Hope and Despair Appears
104. Men of Forensics Pictured
105. The Island's Great Beauty Absent
106. The Secret of Petrification Absent
107. To the Trump Card Science Vessel Absent
108. Two Trump Cards Flashback
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 Fantasy
115. One Second, One Grain Absent
116. Miracle in Hand Appears
117. The Kingdom of Science Strikes Back Appears
118. Silent Soldiers Appears
119. Science Soldiers Appears
120. Top Secret Absent
121. Medusa's True Face Absent
122. Brain-Battle Puzzle Pieces Appears
123. The Battle of Wits' Deal Game Appears
124. The Invention of God and the Devil Appears
125. The Decisive Three-Dimensional Battle Appears
126. A 3-D Strategy Appears
127. Medusa and Perseus Appears
128. Island-Wide Battle Royale Appears
129. Joker Appears
130. Devil's Choice Appears
131. Nasty Crimes Appears
132. The Strongest Weapon Is... Appears
133. Flash of Destruction Appears
134. Commander Faceoff Petrified
135. Counting Flashback
136. Medusa Vs. Science Appears
137. Last Man Standing Appears
138. End Of Part 3 Appears
New America City Arc
139. First Dream Appears
140. New World Plots Appears
141. First Team Appears
142. World Power Appears
143. Ryusui vs. Senku Appears
144. Ryusui & Gen vs. Senku & Kohaku Appears
145. Bar Francois Appears
146. Bar Francois: Bitters Appears
147. Science Journey Appears
148. Pioneers of Earth Appears
149. Light Lure in Darkness Appears
150. Righteous Science User Appears
151. Dr. X Appears
152. Doctor Vs. Doctor Appears
153. Science Wars Appears
154. Spy vs. Spy Appears
155. Science Is Elegant Appears
156. Two Scientists Absent
157. Same Time, Same Place Absent
158. Who's the Scientist? Appears
159. Lock On Appears
160. Gunshots Echo Appears
161. Craft Wars Appears
162. Down the Earth-Stained Path Appears
163. Multifront Final Battle Appears
164. Re-Lock On Appears
165. Know the Rules, Make the Rules Appears
166. Ultimate Knight Appears
167. Different Strokes Absent
168. Corn City: Population One Million Appears
169. RISK or HEART Appears
South America Arc
170. Staring Up at the Same Moon Absent
171. Staring at the Same Light Appears
172. Marked with an "X" of Wisdom Appears
173. Earth Race Appears
174. The Specter of the Panama Canal Appears
175. Ultra Race Across South America Appears
176. Net-Breaking Battle Plan Appears
177. Medusa Mechanism Appears
178. Science Scales Mountains Appears
179. Bonds on the High-Wire Appears
180. Sickening Yet Beautiful Appears
181. New World Science Appears
182. Diamond Heart Appears
183. Stone Sanctuary Appears
184. Fort Medusa Appears
185. Lovely Cleavage Plane Appears
186. To Each Their Own Blade Appears
187. Cyber Guerilla Appears
188. What I Once Sought to Destroy Absent
189. Our Dr. Stone Appears
190. Science Transcends Life Pictured
191. Divine Scream, Down to Earth Mentioned
192. Until We Meet Again Absent
193. Our Stone World Pictured
New Stone World Arc
194. Homo Sapiens, All Alone Fantasy
195. Treasure Hunter, All Alone Petrified
196. Scientist, All Alone Absent
197. A Stony Eden and Its Forbidden Fruit Appears
198. Whole New World Appears
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 Appears
206. Dawn of the Computer Appears
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 Appears
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 Appears
217. Science Underdogs Appears
218. WWW (World Wide Workshop) Appears
219. Three Heroes Appears
220. A Desire for All Appears
221. Entrusting It All Appears
222. Science Road Appears
223. 0 Appears
224. In Space Absent
225. Docking Appears
226. Giant Step Appears
227. It Was You Appears
228. Life Stone Pictured
229. Why-Man Flashback
230. Human Flashback
231. A Future To Get Excited About Appears
232. Final Chapter: Dr. STONE Appears


  • Ryūsui ( (リュウ) (すい) ) means Dragon Water and Nanami ( (なな) () ) means Seven Seas.
  • He is the first person to be revived twice.
    • He is also the first person to be revived three times.
    • By the end of the series, he holds a record of being petrified six times.
  • Ryusui's former status of being rich makes him a person Tsukasa Shishio would not revive in the words of Minami Hokutozai.
  • Ryusui frequently throws around words like 'love' and 'desire', regardless of gender, which could point to him being pan- or bisexual. However, his exact orientation has not been officially stated either in the series or by the authors:
    • In the Volume 11 extras, a reader asks how many people Ryusui dated, and he replies with: "Every woman is a unique creature with her own charms. (The same goes for men!)"[34]
    • In Chapter 142, Ryusui says to Minami: "I love all women, you see, so naturally that includes you. Men too!!" This last part is specifically referring to Tsukasa, whom Ryusui claims to desire.[35]
  • Clifford Chapin (Ryusui's English voice actor) is currently engaged to Kristen McGuire (Ruri's English voice actress).


  • (On several occasions) "Ha ha! I'm finally back!! And this world will be mine all over again!!"[36]
  • (On several occasions, with slight variations) "My sailor's instincts are never wrong!"[37][38]


  1. Dr. Stone Manga: Volume 22 — Extras
  2. Dr. Stone Manga: Chapter 98, Page 17
  3. 3.0 3.1 Dr. Stone Manga: Chapter 178, Page 18
  4. Dr. Stone Manga: Volume 19 — Extras
  5. Dr. Stone Manga: Chapter 197, Page 6
  6. Dr. Stone Manga: Chapter 1, Page 11
  7. Dr. Stone Manga: Chapter 85, Page 10, Ryusui is revived by Senku for the first time.
  8. Dr. Stone Manga: Chapter 103, Page 14, Ryusui is petrified along with majority of the Perseus Crew.
  9. Dr. Stone Manga: Chapter 116, Page 16, Ryusui is revived by Senku.
  10. Dr. Stone Manga: Chapter 134, Page 5, Ryusui is petrified along with everyone on the Treasure Island.
  11. Dr. Stone Manga: Chapter 136, Page 14, Ryusui is revived by Senku to assist in the fight against Ibara.
  12. Dr. Stone Manga: Chapter 137, Page 8, Ryusui is Petrified once again in a ploy to defeat Ibara.
  13. Dr. Stone Manga: Chapter 138, Page 7, Ryusui is revived by Kingdom of Science.
  14. Dr. Stone Manga: Chapter 192, Page 21, Ryusui Nanami is petrified along with the rest of the world.
  15. Dr. Stone Manga: Chapter 197, Page 6, Ryusui Nanami is revived by Senku.
  16. 16.0 16.1 Dr. Stone Manga: Chapter 226
  17. Dr. Stone Manga: Chapter 85, Page 13
  18. Dr. Stone Manga: Chapter 141, Page 19
  19. Dr. Stone Manga: Chapter 93, Page 8
  20. Dr. Stone Manga: Chapter 94, Page 11
  21. Dr. Stone Manga: Chapter 95, Page 12
  22. Dr. Stone Manga: Chapter 117, Page 3
  23. Dr. Stone Manga: Chapter 119, Page 3
  24. Dr. Stone Manga: Chapter 137, Page 2
  25. Dr. Stone Manga: Chapter 133, Page 13
  26. Dr. Stone Manga: Chapter 89
  27. Dr. Stone Manga: Chapter 164, Page 1
  28. Dr. Stone Manga: Chapter 85, Page 15
  29. Dr. Stone Manga: Chapter 92, Page 3
  30. Dr. Stone Manga: Chapter 85, Page 12
  31. Dr. Stone Manga: Chapter 136, Page 14
  32. Dr. Stone Manga: Chapter 98, Page 10
  33. Dr. Stone Manga: Chapter 137, Page 10
  34. Dr. Stone Manga: Volume 11 — Q&A
  35. Dr. Stone Manga: Chapter 142, Pages 14-15
  36. Dr. Stone Manga: Chapter 85, Pages 10-11
  37. Dr. Stone Manga: Chapter 95, Page 11, Page 13
  38. Dr. Stone Manga: Chapter 154, Page 5

Site Navigation[]

v  e
Kingdom of Science
Male ChromeGen AsagiriGinroHyogaJoel GearKasekiKinroKokuyoMagmaRyusui NanamiSai NanamiSenku IshigamiTaiju OkiTetsuya KinomotoTsukasa ShishioUkyo SaionjiYo Uei
Female Chelsea ChildeHomura MomijiKohakuMinami HokutozaiMirai ShishioNikki HanadaRuriSuikaYuzuriha Ogawa
Unknown Francois
Affiliated Groups American ColonyIshigami VillagersPetrification Kingdom
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Pre-Petrification Humans
Male Brody DudleyByakuya IshigamiCarlos BarriosGen AsagiriHyogaJoel GearLeonard MaxwellMax AdamsRyusui NanamiSai NanamiSenku IshigamiShamil VolkovStanley SnyderTaiju OkiTetsuya KinomotoTsukasa ShishioUkyo SaionjiXeno Houston WingfieldYakov NikitinYo Uei
Female Charlotte BonyChelsea ChildeConnie LeeDarya NikitinaHomura MomijiLillian WeinbergLuna WrightMaya BiggsMinami HokutozaiMirai ShishioNikki HanadaYuzuriha Ogawa
Unknown Francois