History AdaptationExpansion / AnimeAndManga

* Several ''Manga/{{Doraemon}}'' movies are expansions of earlier manga shorts:
** It dates all the way back to ''Anime/DoraemonNobitasDinosaur'', the first feature-length film of the franchise which started as a manga story. The manga ends with Nobita and Doraemon sending Piisuke the dinosaur into the past, before [[ItMakesSenseInContext Nobita asks Doraemon for a gadget that allows him to eat carbonara through the nose]]. The movie continues with Nobita and Doraemon realizing they had sent Piisuke to the wrong era and must travel back in time to retrieve him, only to be ambushed by the Dinosaur Hunters (who doesn't exist in the original story) and TrappedInThePast for the rest of the adventure.
** ''Anime/DoraemonNobitaAndTheSteelTroops'' is adapted from "Let's Assemble a Handmade Robot", both stories starting with Suneo boasting his new, human-sized robot causing Nobita to beg Doraemon into getting him a new robot to compete against Suneo's. Nobita does get a HumongousMecha in both instances (the original being part of the 22nd-Century Titanic Robo Giant Series purchased by Doraemon, the expansion being a planet-destroying machine from Planet Mechatopia) where the robot parts arrive bit by bit, starting with the legs, torso, and gradually the rest of it's body. The latter however has a RobotGirl spy named Riruru thrown in the mix, and an invading robot army that forms majority of the movie's threat, as well as inclusion of Shizuka convincing Riruru to pull a HeelFaceTurn.
** ''Anime/DoraemonNobitaAndTheBirthOfJapan'' is based on a manga short where both stories have the gang deciding to collectively [[TheRunaway run away from home]] after constant peer pressure and scoldings from their parents, and decide to spend a week in prehistoric times to avoid the responsibilities of life... only to learn an {{aesop}} to value what they already have after stumbling into harshness and loneliness in ancient times. The expansion however has added subplots about warring cavemen tribes, time-traveling criminals intending to change history, and Nobita creating three legendary animals as his pets.
** ''Anime/DoraemonNobitasDiaryOfTheCreationOfTheWorld'', like the manga short "The Earth Creation Kit", have Nobita literally playing God and creating a brand-new universe with Doraemon's gadgets, before exploring the world he created himself. The film have even more scenes within Nobita's self-created world, however, and it remains intact at the end of the story (unlike the manga short which have the Earth Creation Kit accidentally destroyed when Tamako thought it was trash).
** ''Anime/DoraemonNobitaAndTheGalaxySuperExpress'' is adapted from "Milky Way Railroad", where Nobita and friends sneaks off to board a futuristic [[WagonTrainToTheStars Galaxy-Faring Space Train]] after finding leftover tickets in Doraemon's possession. Ironically, the original short have Doraemon strictly forbiding Nobita to use his tickets due to safety concerns (only for Nobita to sneak off with those tickets without Doraemon's permission, like always), but in the expanded story, it's Doraemon himself who ''invited'' the gang to come along!
** The 2007 remake of the 1980s movie, ''Anime/DoraemonNobitasGreatAdventureIntoTheUnderworld'' is noticeably some 20 minutes longer than the original, and even have a subplot where TheDragon of the film is [[RelatedInTheAdaptation related to one of the new heroes, Miyuki]], a completely new storyline introduced. There are also additional flashbacks for the new characters, including a prologue without the gang in it, something absent in the originals.
** ''Anime/DoraemonNobitasGreatAdventureInTheSouthSeas'' expands an anime short based on the manga where Nobita drags Doraemon, Suneo and Gian into a seafaring adventure for PirateBooty. In the movie version, Shizuka was thrown into the mix as well, before the gang accidentally enters a time warp and into UsefulNotes/TheGoldenAgeOfPiracy where they realize the oceans of the past is infested with {{Sea Monster}}s. The movie version even recycles StockFootage from the anime!
** ''Anime/DoraemonNobitaAndTheWindmasters'' turns a manga short "Typhoon Fuuko", into a feature-length film where the sentient baby typhoon adopted by Nobita (named Fuuko in both instances) turns out to be a SealedEvilInACan fated to revive an ancient eldritch monster in destroying humanity. Also absent in the original are a village of Wind-Manipulating wizards in Mongolia, spirits of ancient warlocks, another sentient typhoon named Gorado who's an EvilCounterpart to Fuuko, and yet another time-traveling OmnicidalManiac criminal who abducts Fuuko to initiate doomsday.
** ''Anime/DoraemonNobitaInTheWanNyanSpacetimeOdyssey'' is based on the manga story "Stray Dog Ichi's Country" with Nobita and friends coming across entire packs of stray cats and dogs, one named Ichi (in both stories) who forms a bond with Nobita. The gang realize there's no place in the present for raising these strays, so they instead send them to ancient times and uses the Evolution Ray to have the animals evolve and adapt on their own. The expanded version have new subplots including a rogue cat named Jara who plots to TakeOverTheWorld as retaliation on humanity, the gang spending more time in the past with the evolved cats and dogs, and plenty of action scenes, fights against Jara's minions and a lengthy climax in an amusement park (while the original short contains ''no'' action at all since it's a comedic drama).
** ''Anime/DoraemonNobitaAndTheGreenGiantLegend'' extends an already longer-than-usual manga story, "Goodbye Kibo!" (whose anime counterpart is a two-parter) into a full-length film, with more scenes involving Kibo's fate as an ApocalypseMaiden in terraforming the galaxy. The gang (including Suneo, Gian and Shizuka - opposed to the original where only Doraemon, Nobita and Kibo are involved) also made it to the PlantAliens' home planet and spends most of the movie in there, something the manga alluded but never really shows.
** ''Anime/DoraemonNobitasGreatBattleOfTheMermaidKing'' is based on "Underwater Pump Simulator", a story where Nobita begs for Doraemon to bring him on a scuba-diving adventure after being envious of Suneo, so Doraemon brings out the titular gadget to summon fishes from the Atlantic into an underwater simulation in Tokyo. The movie however have the gadget summoning a mermaid as well who ends up accidentally stranded in Japan, and the gang's attempts to find the mermaid's home kickstarts the adventure.
** ''Anime/DoraemonNobitaAndTheIslandOfMiraclesAnimalAdventure'' borrows elements from "Long Live the Dodo Bird", where Doraemon and Nobita attempts to rescue extinct, prehistoric animals with the Time Hole. Unlike the manga where the extinct animals are sent to an uninhabited island (and ends right there), the movie have them sending the animals to a 22nd Century animal preserve, the titular Miracle Island, only to contend with poachers from the future intending to enslave the animals with their giant mechas.
** ''Anime/DoraemonNobitaAndTheSpaceHeroes'' is (rather loosely) expanded from "Special Effects Ultra Dora-Man" where the gang tries making their own {{toku}} film using Doraemon's gadgets, with Doraemon insisting that he's cast as the BigGood of the story. And then they stumble into an alien seeking for help to save his home planet, mistaking the gang's film to be real, and kickstarting a whole new adventure.
** ''Anime/DoraemonGreatAdventureInTheAntarcticKachiKochi'' have it's first act being based on a manga story where Doraemon and Nobita, intending to escape the summer heat, goes to an uninhabited iceberg in Antartica to create their own mini-wonderland. The similarities end when Nobita found a 100,000-year-old golden bracelet in the ice and realize it's an artifact to prevent an eldritch monster from destroying the world.
** ''Anime/DoraemonNobitasChronicleOfTheMoonExploration'' took the manga short, "Doctrine Association Badges" and [[RecycledInSpace recycles it on the moon]], with new subplots involving immortal aliens fleeing from the genocidal AI hunting them to extinction added to the mix.

** Hector Malot's novel ''[[Literature/NobodysGirl En Famille/Amongst Family]]'' begins with the arrival of the protagonist Perrine, her IllGirl mother Marie and their donkey Palikare to Paris. Its WMT version, ''Anime/TheStoryOfPerrine'', shows ''how'' they traveled there from Bosnia in the first place, gives Perrine a CanineCompanion named Baron, and adds more "meat" to Perrine's travel to the northern village of Maraucourt and her early days there.

** Some cases adapted from manga to anime, the anime adds all kinds of details to the basic layouts already given, and sometimes these work ''really'' well. A great example is the resolution of the [[spoiler: Detectives Koshien]] case: the manga makes TheReveal that [[spoiler: Koshimizu killed Tokitsu to punish him for driving her best friend Kana to suicide, upon wrongfully getting her accused of killing her boss (who actually commited suicide)]] rather straightforward and short, but the anime expands this via adding [[spoiler: flashbacks of Kana crossing the DespairEventHorizon due to the false accusation ''and'' of her throwing herself off a cliff (one of them [[StartsWithASuicide almost at the start of the special]]), alongside another that shows [[TheOphelia the boss herself]] falling in madness]], and concluding with [[spoiler: Koshimizu [[CryCute crying as she explains her reasons]].]]

* ''Manga/{{Touch}}'' goes through this, as might be expected from turning a 26-volume manga into a 101-episode TV series, three theatrical movies and two TV-movies.

* ''Manga/KaguyaSamaLoveIsWar'': During the scene where the entire school ends up mistaking Shirogane's intentions to ask Kaguya to help with his reelection for a LoveConfession, there's a brief segment of Karen and Erika doing a piece on it for the Mass Media Club. They are also shown trying to interview Hayato after Kaguya coerces him in to dropping out of the election.

** ''Anime/DoraemonNobitaAndTheIslandOfMiraclesAnimalAdventure'' borrows elements from "Long Live the Dodo Bird", where Doraemon and Nobita attempts to rescue extinct, prehistoric animals with the Time Hole. Unlike the manga where the extinct animals are sent to an uninhabited island, the movie have them sending the animals to a 22nd Century animal preserve, the titular Miracle Island, only to contend with poachers from the future intending to enslave the animals with their giant mechas.

* Most ''Manga/{{Doraemon}}'' movies are expansions of earlier manga shorts:

* ''Literature/MoribitoGuardianOfTheSpirit'' is a 26 episode adaptation of a 300 page book. Needless to say, it greatly expands upon the story, giving more focus and characterization to the Mikado's trackers. Balsa and Chagum spend the first half of the anime trying to avoid and escape them, while in book and manga, they completely escape for two seasons after their first encounter.

* ''Manga/MonthlyGirlNozakiKun'':

* Instead of relying on filler arcs to provide padding, the anime eventually took to following a 1:1 chapter/episode pacing, expanding on and lengthening the already-present material. Creator/EiichiroOda has admitted that despite the manga being so long and stuffed with ideas and happenings, if he had his way there would be even MORE. His editors tend to make him throw out a lot of ideas which aren't essential to keeping the story moving. These concepts often make it into the anime.
** The anime also fully covers the fates of the other eight Straw Hats following [[spoiler:their defeat by Kuma]] presented while Luffy was traveling to Impel Down.
** They also show Rob Lucci's backstory in frightening detail.
** The anime also adapts the cover illustrations for Chapters 35-37, 39, 42-43, 46-48, and 50-51, which chronicle Buggy after his defeat at the hand of Luffy, from the time he is nearly eaten by a giant bird, to when he meets Gaimon, and the first time he joins forces with Alvida into two full-length episodes.
** Many of the major fights Post-TimeSkip have been expanded, most likely for two reasons: 1. padding, and 2. so that the villains don't suffer under TheWorfEffect so badly like they do in the manga.
** Brook looking for milk before going back to fight Oars in the Thriller Bark Arc.
** In the manga, Zoro's past is revealed in the form of a brief flashback with a few scenes. The anime expands it into an entire episode just before the start of the Baratie arc and includes additional scenes, such as when Zoro first came to the dojo.
** In the Alabasta arc, there are a few fillers in the anime of the crew making their way across the desert with Ace tagging along as he tries to find info on Blackbeard's whereabouts. They provide a better explanation of why Ace up and leaves after a while, but also create a conundrum of a bogus Poneglyph appearing where it shouldn't.

* Inverted with ''LightNovel/{{Slayers}}'' and its original source of canon, the LightNovel series. The regular series is fifteen books long, and the first half is the basis for one manga series and two seasons of the anime. The ''Slayers Special''/''Smash'' novels take place before the original series. While four movies and six [=OVAs=] cover a good amount of Lina's prequel time, there are ''over thirty'' novels. As of this writing, ''Smash'' is on hiatus, but definitely not cancelled, so it won't end anytime soon. This creates some serious FridgeLogic when it's revealed that the ''Special/Smash'' series takes place over the span of two years, while the regular series spans roughly four.

* ''Anime/SuperCrooks2021'' expands on how each characters know one another, and the events leading to the original storyline of ''Series/{{Supercrooks}}''.

** Also, in the manga, Matt, while still a very minor character, had a bigger role than he did in the anime.

* As a result of having relatively few opportunities to put in filler arcs in later anime episodes, later ''Manga/OnePiece'' episodes cover exactly a chapter worth of material to avoid [[OvertookTheManga getting closer to where the manga is]]. As most chapters don't have 20 minutes worth of material, a good portion of the episodes ends up being filler, primarily expanding on scenes, giving what is happening in a single panel more time on-screen and showing what a character who had not been shown in the actual manga chapter is doing (for example, Brook looking for milk before going back to fight Oars in the Thriller Bark Arc).

* The ''Manga/HidamariSketch'' {{yonkoma}} started at around the same time (early 2004) as ''Manga/LuckyStar'' and both were first animated at roughly the same time (early 2007). Yet, ''Hidamari Sketch'' has a much slower pace. It is only through Creator/StudioShaft's expansion (with the insertion of original stories) that it can sustain the 42 episodes it has or will air. Major expansion points: [[AscendedExtra Chika was ascended from a referenced unnamed character to arguably one of the major characters]]. The anime played up the manga's relatively normal RomanticTwoGirlFriendship content, to the level that Hiro and Sae can be said as platonically married in the anime. Natsume's {{tsundere}} tendencies are magnified in the anime.

** ''Anime/ThreeThousandLeaguesInSearchOfMother'' tells the adventures and misadventures of an Italian boy named Marco Rossi, who goes to Argentina [[IWillFindYou to find his mother Anna]]. The basis for it is a mere ''chapter'' of the book ''Cuore'' by the Italian writer Edmondo De Amicis, so the series itself takes the basic idea and timeline and builds a whole story from there by inserting SliceOfLife episodes with Marco and his remaining family (his father Pietro and older brother Tonio) preparing for the travel, Marco befriending a nearby family [[PuppyLove and especially]] the middle daughter Fiorina [[spoiler: and finding them again in Argentina]]), the addition of Marco's [[EverythingsBetterWithMonkeys pet monkey]] Amedio, etc.

* In some ''Manga/DetectiveConan'' cases adapted from manga to anime, the anime adds all kinds of details to the basic layouts already given, and sometimes these work ''really'' well. A great example is the resolution of the [[spoiler: Detectives Koshien]] case: the manga makes TheReveal that [[spoiler: Koshimizu killed Tokitsu to punish him for driving her best friend Kana to suicide, upon wrongfully getting her accused of killing her boss (who actually commited suicide)]] rather straightforward and short, but the anime expands this via adding [[spoiler: flashbacks of Kana crossing the DespairEventHorizon due to the false accusation ''and'' of her throwing herself off a cliff (one of them [[StartsWithASuicide almost at the start of the special]]), alongside another that shows [[TheOphelia the boss herself]] falling in madness]], and concluding with [[spoiler: Koshimizu [[CryCute crying as she explains her reasons]].]]
** The animated special ''Episode One'' expands on the first two episodes of the series, adding LOTS of anime-original material (and those were episodes that ''already'' added scenes to the original manga's rendition): a cameo of [[spoiler: Sherry/Shiho/Ai finding out that the fatal drug can be a FountainOfYouth]] a scene where [[ActionGirl Hina Wada]] apprehends a thief on her own, several scenes [[ShipTease with Ran and Shinichi interacting on their own]], another where the culprit of the first case is seen visiting Sonoko's parents and panicking when Shinichi shows up, [[spoiler: Gin and Vodka disposing of an apparent traitor]], the karate tournament that Ran wins and leads to Shinichi taking her to Tropical Land to celebrate ''and'' showcases the time when Makoto fell in LoveAtFirstSight with Sonoko, [[spoiler: Shinichi's parents in disguises]], tiny apparitions of [[spoiler: Kir (as Rena Mizuhashi), Korn and Chianti]], a change in how the Detective Boys first appeared, [[spoiler: more details about Gin and Vodka's blackmail operation that led to Shinichi being shrunk into Conan]], etc. The very final sequence also includes ''quite'' a change: [[spoiler: it showcases Akemi Miyano's death... but following the manga rendition, as her first and last intervention had been changed in the anime to make her survive for some time: here, such a modification is probably retconned.]]

* The ''Anime/{{Pokemon}}'' anime is a shining example, having perhaps a whole two-thirds of the episodes being content added into the world provided by the games. In fact, they did a 36-episode ''story arc'' based outside of the established worlds (The Orange Islands -- the ''second'' season, no less!)

** The [[Anime/FullmetalAlchemist 2003 anime version]] deviated from the manga on many points due to a huge case of OvertookTheManga (which was finished ''in 2012''), but even the ones where it stayed the same had additional scenes. The Liore arc, one of the more faithfully adapted ones, has several added scenes expanding on Rose's backstory, and shows Father Cornello and his minions giving the Elric brothers more trouble than they did in the manga. Some minor plots are expanded upon, as in the anime, Ed has a TenMinuteRetirement after [[spoiler:Nina's death]], during which he and Winry are captured by Barry the Chopper (whom the brothers don't meet in the manga until his soul is bound to a suit of armor) and Ed has to fight him to free himself and Winry and then help arrest him.

** In yet another major example, episode 460 marks the beginning of one of the few short filler arcs to not only be accepted, but outright regarded as necessary: [[spoiler: giving the formerly [[GenericDoomsdayVillain generic]] and [[GiantSpaceFleaFromNowhere unexplained]] [[BigBad Kaguya Otsutsuki]] some much-needed attention in the form of a greatly-expanded backstory and personality. Whether it worked or not, it's in the eye of the beholder.]]