History TimeTravel / AnimeAndManga

* The ''Literature/HaruhiSuzumiya'' stories/anime feature time travelers, most notably [[{{Woobie}} Mikuru]]. It gets important in a major way in the novels, which also push Mikuru from being the NeutralFemale somewhat. [[spoiler:They travel to [[ArcWords 3 years ago]], and [[TrustPassword Kyon is the goddamn John Smith!]] ]] The 7th novel also circles around it, this time with a Mikuru from a week in the future, setting off events to inspire the future inventor of time-travel and set off events necessary to bring about her organization. Like by nailing a can to the ground to send a man to hospital so that he can meet his future wife, or by dropping a turtle into freezing water to teach the inventor of time-travel something.

* ''Manga/NegimaMagisterNegiMagi, with the (multiple in the manga, one in the original series) version(s) of the Cassiopeia, which is (literally) a watch that allows you to time-travel.

* In ''Anime/DigimonAdventure02TheBeginning'', [[spoiler:Davis and Ken follow Lui back to the past, allowing them to witness Lui's childhood and the circumstances behind his first meeting with Ukkomon. Davis attempts to intervene the first time but is stopped by Ken, concerned about the possible consequences of changing history. Later in the movie the memory is revisited and Lui himself intervenes to plead with his mother that his child self loves her despite everything, leading her to soften up on him in the flashback. It isn't made clear if this actually changed Lui's past or was simply Ukkomon letting him enjoy a moment of catharsis his young self never got]].

* In ''Anime/DigimonAdventure02TheBeginning'', [[spoiler:Davis and Ken follow Lui back to the past, allowing them to witness Lui's childhood and the circumstances behind his first meeting with Ukkomon]].

* The ''LightNovel/HaruhiSuzumiya'' stories/anime feature time travelers, most notably [[{{Woobie}} Mikuru]]. It gets important in a major way in the novels, which also push Mikuru from being the NeutralFemale somewhat. [[spoiler:They travel to [[ArcWords 3 years ago]], and [[TrustPassword Kyon is the goddamn John Smith!]] ]] The 7th novel also circles around it, this time with a Mikuru from a week in the future, setting off events to inspire the future inventor of time-travel and set off events necessary to bring about her organization. Like by nailing a can to the ground to send a man to hospital so that he can meet his future wife, or by dropping a turtle into freezing water to teach the inventor of time-travel something.

* ''LightNovel/TsuyokuteNewSaga'': The story begins within the climax of a very tragic take on the "heroes embark on a journey to defeat the Demon Lord" cliche; at this point most of humanity has been wiped off the face of the earth, and the heroes are on a suicide mission to kill the Demon Lord. They aren't expecting to survive or get back home. However, the last surviving hero, the leader Kail, manages to grab onto an artifact the Demon Lord seemed very concerned about before giving in to his wounds, and it sends him back in time by four years, before he [[DoomedHomeTown lost everyone he loved.]] Knowing what's about to happen, he dedicates his life to preparing humanity for the coming disaster and making sure his family and friends survive this time.

* In ''Anime/{{Simoun}}'', time travel requires the successful completion of the Emerald Ri Maajon, an extremely dangerous maneuver that can only be accomplished by a pair of the most skillful pilots with [[TeamSpirit a powerful emotional bond]] with each other. Failed attempts are generally fatal, with [[NuclearWeaponsTaboo explosive consequences]].
* ''LightNovel/TsuyokuteNewSaga'': The story begins within the climax of a very tragic take on the "heroes embark on a journey to defeat the Demon Lord" cliche; at this point most of humanity has been wiped off the face of the earth, and the heroes are on a suicide mission to kill the Demon Lord. They aren't expecting to survive or get back home. However, the last surviving hero, the leader Kail, manages to grab onto an artifact the Demon Lord seemed very concerned about before giving in to his wounds, and it sends him back in time by four years, before he [[DoomedHomeTown lost everyone he loved.]] Knowing what's about to happen, he dedicates his life to preparing humanity for the coming disaster and making sure his family and friends survive this time.

* It's revealed in ''Anime/EurekaSevenAo'' that Scub Coral uses time travel to transport parts of itself away to a different time and space to avoid the 1st series's calamity known as "Limit of Questions". It eventually lead to the existence of Secrets, the entire series major antagonists, and begins Ao and Generation Bleu's quest to stop Scub Bursts from happening. The 1st series hero and heroine, Renton and Eureka, are time travellers in Ao's world.
* Becomes a major theme in ''Manga/PandoraHearts'' after it is revealed that time flows differently in [[TheUnderworld the Abyss.]] Any character that falls down there, [[EldritchLocation if they make it out alive,]] hardly ever comes back to his or her original timeline.
* In ''Manga/{{Dazzle}}'', it becomes a major plot point later on in the story, and very clearly a part (possibly even the cause) of Kiara's [[ThePlan plan]].
* ''Anime/DragonBallZ'':
** The Android Saga is kicked off by the arrival of Trunks, a FutureBadass who owns both Frieza and King Cold when they come to Earth to seek revenge on Goku before revealing himself to be the son of Vegeta and Bulma. He's traveled back in time because the future he came from is a BadFuture where human civilization has been destroyed by the Androids and he wants to prevent that future from coming to pass by making sure that Goku doesn't die from the heart disease that he picked up on Planet Yadrat. He's only half successful because while Goku does survive the heart disease, he's out of action for the good part of the saga, leaving Trunks and the rest of the Z team to battle the Androids. Then an even more dangerous villain arrives from a ''third'' timeline...
** Whis is revealed to have the ability to manipulate time, enough to go back by three minutes, anyway. It's debatable whether his ability is true time travel though, as it's implied that what he's doing is more along the lines of ''undoing'' the last 3 minutes across the entire universe, which is in some ways even more impressive.
** ''Anime/DragonBallSuper'' has this happen for its fourth arc, as Future Trunks once again travels to the past to escape the new ArcVillain, Black. This surprises Whis, who didn't think mortals were capable of developing the means to time travel... and makes Beerus angry, as apparently time travel is something even the gods are not supposed to do.
** The Supreme Kais are able to time travel using "Time Rings", but they can only go to the future (and back again) to help themselves evaluate long-term consequences of mortal actions. Travelling to the past is absolutely forbidden: every time it happens, the timeline splits and an alternate reality is created (there are seemingly five in total, and the Supreme Kais have rings that allow them to jump from one to the other as well). Black has one of these Time Rings, which concerns Whis and Beerus, since only the Supreme Kais should ever be in possession of one of those.
* Time travel is specifically taboo in the ''Franchise/SailorMoon'' universe, and it's the job of Sailor Pluto to guard the gate of time and make sure no one uses it. That said, The sailor soldiers (Chibi-usa especially) make occasional trips between the 20th and 30th centuries.
* ''Anime/YuGiOh5Ds'' gives us the Infinity Device, which is capable of creating wormholes, useable for time travel. Illiaster intends to use the device to further their own schemes in [[spoiler:guiding history on the correct path]].
* ''Manga/NegimaMagisterNegiMagi, with the (multiple in the manga, one in the original series) version(s) of the Cassiopeia, which is (literally) a watch that allows you to time-travel.
* This comes into play in the Wano arc of ''Manga/OnePiece''. Momonosuke's [[PosthumousCharacter now-deceased mother]], Kozuki Toki, had the powers of the Time-Time Fruit, which gave her the ability to send herself or other people forward in time. (Time traveling backwards is established to be impossible.) Toki was born in the far-distant past and repeatedly travelled forward in time until she met Momo's father, Oden, and settled down with him. When Kaido and Orochi took over the Wano country and killed Oden, [[spoiler:Toki chose not to use her powers to save herself, but did use them to send Momonosuke and four of his retainers--Kin'emon, Kanjuro, Raizo, and Kiku--20 years into the future, to the current time of the story]].

* It's revealed in ''Anime/{{Eureka Seven Ao}}'' that Scub Coral uses time travel to transport parts of itself away to a different time and space to avoid the 1st series's calamity known as "Limit of Questions". It eventually lead to the existence of Secrets, the entire series major antagonists, and begins Ao and Generation Bleu's quest to stop Scub Bursts from happening. The 1st series hero and heroine, Renton and Eureka, are time travellers in Ao's world.

* Manga/MahouSenseiNegima, with the (multiple in the manga, one in the original series) version(s) of the Cassiopeia, which is (literally) a watch that allows you to time-travel.

* In ''Manga/HatenkouYuugi'', it becomes a major plot point later on in the story, and very clearly a part (possibly even the cause) of Kiara's [[ThePlan plan]].