History Manga / DrStone

* AluminumChristmasTrees: Aside from the various outlandish deeds Senku accomplished using not only completely real, but also (relatively) simple science, there is the Owari-Kan-Ryu spearfighting style used by Hyouga, which may seem made-up but is actually also a completely real martial art.

* ActorAllusion: While the statement was also in the Japanese version, [[Creator/AaronDismuke Senku]] talking about [[Anime/FullmetalAlchemist equivalent exchange]] in episode 6 was sure to get more than a few raised eyebrows from dub viewers.

** During the TournamentArc, Suika's watermelon helmet becomes this, specifically because of the lenses in the eyeholes. It first allows Kinro to actually see well enough to put up a fight against Magma, and Chrome is able to use the lenses to [[spoiler: set Magma on fire and ultimately defeat him.]]

** Foxtail Millet does not contain any gluten proteins. This makes it nigh impossible to make it into noodles like Senku does without using another grain (like wheat flour) as binder to provide the missing gluten. The resulting noodles would not be green as depicted, and would taste very different from regular ramen noodles to Senku and Gen.

* TheAdjectivalMan: The Why Man.

* BestHerToBedHer: Played with. The village tradition is that whoever wins the [[TournamentArc Grand Bout]] becomes the new chief and marries the priestess. The current priestess, Ruri, is an IllGirl, and the strongest man in the village, Magma, openly talks about murdering her once he becomes chief and has no further use for her. Ruri's sister, [[ActionGirl Kohaku]], refuses to let anything happen to her, and fights against Magma herself. So it's more like "best her sister to bed her".

*** His comments about his sister [[IllGirl Mirai]] seemed to imply that she was dead, particularly the line about how he has nobody precious to him. [[spoiler: Come chapter 78, we learn that she's still alive, albeit was diagnosed clinically brain dead]].

* TryNotToDie: Chrome refuses to carry on science if Senku dies collecting sulfuric acid, as a way of forcing him to come back alive. This is followed by a flashback to Kohaku doing the same thing for her sister Ruri. [[IllGirl Ruri]] and their father asked Kohaku to memorize the [[OralTradition 100 Stories]] in case Ruri died, but she refused to let that be a possibility.

** Chapter 213: [[spoiler:The making of the rocket is going smoothly, with the computer recently acquired. Senku decides to keep the Medusa device they have in a vacuum tube to help preserve it. Not long after, BAM! The Medusa exploded, prettifying Gen and Yo, the latter shattering!]]

* OldFashionedFruitStomping: The earlier chapters has Senku and Taiju stomping fruit to make wine to distill into brandy for making revival fluid.

* EdutainmentShow: Many episodes contain factual information on chemistry, physics, and architecture woven into the plot. You'll learn, for example, about different methods of generating electricity, and about how glass bends light.

** On the reverse end of the spectrum is Dr. Xeno, a NASA scientist that woke up in post-petrification America and uses his science to form his own empire, complete with airplanes and machine guns. He believes that science can be used to control the masses, and even in the 21st century, he was open with his co-workers about how he would use his knowledge to conquer the local humans if he was sent to the distant past. [[spoiler:As a matter of fact, he was Senku's science mentor in the 21st century, [[EvilMentor and his talk about how science can be used to harm people]] inspired Senku to research how to use science to help people, such as traveling to Africa to study how to fight Ebola when he and Xeno discussed plague-carrying missles]].

** Sulfuric acid is depicted as a beautiful green-haired woman who transforms into a grotesque skeletal figure, representing the dual nature of the scenic green acid lake near the village and the highly deadly fumes it emits. Senku even nicknames her "Ryuu-san"[[note]]A pun on "ryuusan", the Japanese name for the acid. It is instead "Sal" for sulfuric acid in the Viz translation.[[/note]], and "she" pops up as the shorthand image for sulfuric acid in Senku's scientific roadmaps.

** In Chapter 174, [[spoiler:when the Perseus crew sends out the Mobile Lab to distract Stanley and the other Americans, Kaseki, Chrome, Suika, and Taiju wave it goodbye. Taiju in particular is holding up the back of his arm with an 'X' drawn on his wrist, a reference to [[Manga/OnePiece the Strawhat Pirates goodbye to Vivi and Carue at the end of the Alabasta arc]]]].

** With an army breathing down the village's neck, does Senku get to work on trying to make firearms? Nope, his next step is inventing [[spoiler:cell phones]], since Senku would prefer a non-violent resolution to the conflict. Plus, without nitric acid, making gunpowder would not be possible.

** Possibly the most badass instance of this trope during the TournamentArc. Chrome ends up faced off against [[JerkJock Magma]] and has no hope of winning in a straight fight, so he uses a pair of glasses that were left on the arena floor to try and light Magma's clothes on fire. It takes a ''massive'' string of contrivances to work -- since eyeglass lenses are concave, Chrome has to fill them with his own sweat and tears to create a convex lens, then hold absolutely still to keep from disturbing the surface of the water. Likewise Magma needs to be held in place for 60 seconds, so [[ConsummateLiar Gen]] claims that he cast a spell that will make Magma's heart explode if he moves a muscle, adding that he can only maintain the spell for one minute. [[DeconReconSwitch The plan works perfectly]] because Magma plays along with the bluff (he either believes it, or sees it as an opportunity to catch his breath for a minute), and because [[{{Determinator}} Chrome's dedication]] to [[ThePowerOfLove saving the woman he loves]] allows him to stay stock-still and keep the water "lens" from breaking.

* DefeatMeansFriendship: A very typical {{Shounen}} trope, but happens in ridiculous amounts. [[spoiler:So far, ''every'' antagonist barring [[EvilOldFolks Minister Ibara]] has joined or at least nominally allied with Senku sometime after their defeat. Yes, this includes Magma, Tsukasa, Hyoga, Moz, Xeno, Stanley, and all other citizens of the Empire of Might, the Petriifcation Kingdom, and America.]]

* SurprisinglyRealisticOutcome:
** Senku makes ramen for the villagers since it works for what they plan to do (they need easily frozen food and to get the villagers on his side). After going through all the hardwork and being able to make it, both he and Gen eat some, and find that it doesn't taste all that great since they aren't making the same ramen they are used to and are using basically substitute ingredients. The villagers instead are floored by how good it is, since they never had ramen before and don't know what normal ramen tastes like.
** Gen uses his VoiceChangeling skills to try and imitate Lillian Weinberg, hoping that by pretending to be her, he can convince people from the Kingdom of Might to defect to their side. While the voice is convincing for normal people, Gen finds that it fails completely when used on Niki and Ukyo, because Niki is a ''huge'' fan of Lillian and asks questions that Gen and Senku [[FailedASpotCheck never thought about]] and get wrong, while Ukyo figures it out right away because he has [[SuperSenses amazing hearing skills]] and can easily tell that Gen's impression is not quite right.
** Tsukasa is a powerful guy who can kill a lion with only one or two punches, but when [[spoiler:Hyoga tries to stab his sister and he [[TakingTheBullet takes the hit instead]], he becomes critically wounded and basically dies only a few hours later from his wound. Senku has no choice but to let Tsukasa essentially die so he can be stored in a semi-freezer he made, because while he is confidant that they can use the revival fluid to save him if they can find a way to petrify him, without a way to cyrogenically freeze Tsukasa till then, trying to invoke HumanPopsicle isn't possible without higher levels of technology, averting HarmlessFreezing.]]
** RagnarokProofing is thoroughly {{Averted}}. After almost four millennia, natural disasters and time has taken its toll on the land, terraforming the continent and rendering any maps or geographical charting made before the petrification incident useless. Everything designed to last eventually falls apart because too much time has passed for it to remain standing or operational, and only select few locations remain relatively intact.
** In Chapter 117, Senku and his team craft oxygen tanks for scuba diving. Building the tanks is relatively easy, but the act of filling them with pressurized air takes 10 hours of increasingly difficult pumping and ends up destroying their kit-bashed hand pump, and after all that work, the tanks are only good for about 10 minutes apiece.
** In ''reboot'', the ISS astronauts attempt to use the Internet to coordinate their landing attempt, only to discover that it's gone down. Connie says that the Internet was designed to stay active even in case of disaster, but Byakuya explains that the problem is on the other end: with everybody petrified, there's no one operating the world's power plants, and no electricity means no Internet.
** All devices require energy, and [[spoiler: The Petrification Device]] is no different. In Chapter 141, [[spoiler: Senku reveals that Ibara using the device to petrify the entire island cost Dr. Stone a lot of power, and being used to petrify Ryusei and Ibara, barely had enough energy to petrify Tsukasa when the Exploration Team returned.]]
** The team builds a stealth ship using geometric lines and line the walls with rubber to absorb radar waves. It only barely has any effect at all, and certainly not enough to truly avoid radar. Despite all their impressive accomplishments, stealth technology is some of the most advanced in the world; they can't replicate it overnight with some old tires. [[spoiler:Fortunately, the Medusas they found earlier are revealed to be radar-invisible, and coating their stealth ship with them handles the issue]].
** In Chapter 215, the Kingdom of Science [[spoiler:builds a rocket... which topples over and crashes almost as soon as it's launched. They then build at least four more rockets, which takes many years, and all of which blow up spectacularly. As it turns out, there's a ''reason'' why [[ThisAintRocketSurgery "rocket science" as an expression means "extremely difficult work"]]: the slightest mistake ''will'' cause a catastrophic failure. Even modern rockets explode sometimes, never mind one built from scratch in the Stone World.]]

* LoadsAndLoadsOfCharacters: Pretty much every arc introduces an entirely new large group of people. The biggest contributor is the Ishigami Village, with about 40 named villagers (a far jump from [[MinimalistCast the four main characters in the first few arcs]]). To bring things into perspective, as of March 2021, the official popularity poll lists 82 characters.

* TheNameless: When the [[LoadsAndLoadsOfCharacters 40 villagers]] are first introduced, all of their names are given save one. [[spoiler: In the third arc, he reveals that his name is Soyuz, named after the Soyuz spacecraft that the astronauts returned to Earth in, and that he and the inhabitants of Treasure Island are their direct descendants.]]

* AdultFear:
** [[spoiler: Byakuya watches ''something'' happen to Earth when in space, fully aware his son is back there and turned to rock.]]
** [[spoiler: After the second petrification in chapter 193, [[TagalongKid Suika]] is the first to be unpetrified, and the only human left to save everyone for ''years'', with a fear of dying before she could even free her friends]].

** ''Amanita muscaria'' mushrooms are not poisonous and can be legally gathered for consumption in most of the United States. They do contain psychoactive chemicals, but these can easily be removed during preparation. This is brought up again and corrected during Senku's conversation with [[spoiler:Tsukasa as he gets ready to freeze him]], where he doesn't describe it as a deadly poison, instead pointing out that it can cause hallucinations if eaten in large quantities.
* ArtisticLicenseGeography: The crew travels to what would be Araxá on the Brazilian state of Minas Gerais to look for mineral resources, only to later need to gather iron ore elsewhere from the remains of the Perseus and from Isla Martin Garcia on Argentina. The [[https://en.wikipedia.org/wiki/Iron_Quadrangle Iron Quadrangle]] metallogenetic province right there on Minas was completely ignored by the story. Chelsea outright claims that "there's no iron in this part of South America".

* BittersweetEnding: [[spoiler:The end of the manga shows Senku is nowhere near close to his goal of reviving the entire world population even given everything he has been through. There are just too many people on Earth; many of which are either missing or damaged beyond repair. However it is implied he has started work on something that can prevent this entire calamity: a time machine! Something that wouldn’t be possible even with modern technology thanks in-part to the Why-Men.]]

* {{Bookends}}: The war between Senku and Tsukasa starts and ends over soap. Senku being able to produce it reveals to Tsukasa he's incredibly resourceful and a hindrance to his anti-science ambitions. In the end, Senku uses soap to produce [[spoiler: nitroglycerin-powered explosives]] and forces a stalemate with him.

* DanBrowned: The science portrayed in the series is fairy accurate, if "sometimes" exaggerated for the same of being cool, and names the people consulted by the autthor for information. There are a few big inaccuracies in it though: