History Main / SekaikeiGenre

%%* ''Manga/DestinyOfTheShrineMaiden'': With the twist that the relationship is between [[GirlsLove two such girls]].

* ''VideoGame/NightsOfAzure'': Another GirlsLove example, with the plot of the game revolving around the growing relationship between Arnice and Lily, which is stymied partly by the fact that Lily is the next chosen Saint who needs to [[HumanSacrifice sacrifice herself]] [[BarrierMaiden to save the world]]. Which ending you get, and whether the world is saved or not, is dependent on [[RelationshipValues Arnice's relationship with Lily]], [[spoiler:with two showing Arnice and Lily staying together at the cost of the world, while another two showing the world being saved at the cost of their love for each other. It's only in the GoldenEnding where the world is saved with the two remaining together]].

-->-- '''The Doctor''', ''Series/DoctorWho'', [[Recap/DoctorWhoS31E5FleshAndStone "Flesh and Stone"]]

* ''Anime/NeonGenesisEvangelion'' is believed to be a prototype of this concept. The characters can be said to draw the strength to face any given Angel from a specific relationship with others; in the end, when Shinji briefly reaches RealityWarper status, the fate of the world is dependent not on any specific relationship of his, but rather on what he wishes to become of the world in which some people hurt him, while others encouraged him not to give up.
* ''Manga/{{Saikano}}'' deconstructs the living hell out of this setup. Chise is an ultimate weapon in a war and how she decides to fight (if at all) depends on her boyfriend, Shuuji.
%%* ''Anime/ThisUglyYetBeautifulWorld''
%%* ''Manga/DestinyOfTheShrineMaiden'', with the twist that the relationship is between [[GirlsLove two such girls]].
%%* ''Anime/VoicesOfADistantStar''
* ''Manga/{{Clover}}'': Suu has an ambiguous ability which could reshape the world in multiple ways, and it soon becomes clear that she doesn't need to be escorted by a highly-trained and augmented ex-soldier because she's a target (although she is) but because of a long-ago connection between them. The plot isn't really about getting her to her destination, but about how the journey will affect what happens when she reaches it.
%%* ''Anime/EarthMaidenArjuna''
* ''Anime/EurekaSeven'''s plot all centers around the relationship between Renton and Eureka. The story focuses heavily on their romance and how they both grow and mature as people. Their relationship ends up being a central part of the plot, as their relationship has to prove to the world that humans and Coralians can co-exist in some capacity.

%%* ''Manhwa/ImmortalRegis''
%%* ''Literature/ShakuganNoShana''
%%* The ''Manga/GaRei'' manga toss the role of "boy" and "girl" like volleyballs, but eventually it's between Kagura and Yomi.
%%* ''Manga/BlueDrop'', a human girl and [[DiscountLesbians an alien girl]].
* ''Anime/PuellaMagiMadokaMagica'' has magic dependent on EmotionalPowers, and the relationship between [[spoiler:Madoka and Homura]]--either StarCrossedLovers or [[PseudoRomanticFriendship star-crossed close friends]] depending on [[AmbiguouslyGay your perspective]]--eventually has cosmological implications. By the time of [[Anime/PuellaMagiMadokaMagicaTheMovieRebellion The Movie]]'s conclusion, both characters have taken a stab at [[spoiler:rewriting the laws of reality for the greater good, tragically pushing their partner away in the process.]]
%%* The second ''VideoGame/{{Drakengard|2}}'' game.
* ''VideoGame/LifeIsStrange'' revolves around the rebuilding of protagonist [[TimeMaster Max]] and her ChildhoodFriend [[TroubledButCute Chloe's]] relationship as they use Max's new TimeTravel powers to attempt to find out what happened to [[LivingMacGuffin missing girl Rachel Amber]] and prevent a storm from destroying their town. In the end, [[spoiler:[[PlayerPunch the player]] is forced to make a [[SadisticChoice choice]] between saving [[ButterflyOfDoom Chloe's]] life and allowing the storm to destroy the town, or [[TheNeedsOfTheMany letting her die so the town will live.]]]]
* In ''VideoGame/OneShot'', [[TheChosenOne the only one who can save the world]] is a young child named Niko. [[AmbiguousGender They]] have been transported to this world and can only return home once they return the sun (a giant lightbulb) to the top of a tower. [[spoiler: At the end of the game it is revealed that the only way for Niko to return home is to smash the lighbulb - which would destroy the world. The player- whom [[BreakingTheFourthWall Niko has been talking with directly throughout the game]] [[SadisticChoice has to choose between saving the world and letting Niko return home]]. The [[GoldenEnding true ending]] lets you do both, but this was released after the original game and requires getting one of the other endings first.]]
%%* A Western example is the Bad Wolf arc in ''Doctor Who''. On a smaller scale, the Impossible Girl arc is, too.
* In ''Manga/SailorMoon'', the forbidden love between Usagi and Mamoru was the reason their old world collapsed. In their reincarnation, this is reversed; their love becomes the sustaining force that helps her save the present world. However, at one point in ''R'', it appears that their relationship will doom the world again - the actual situation is more complicated.
%%* ''Literature/IriyaNoSoraUFONoNatsu''
* ''VideoGame/NightsOfAzure'' is another GirlsLove example, with the plot of the game revolving around the growing relationship between Arnice and Lily, which is stymied partly by the fact that Lily is the next chosen Saint who needs to [[HumanSacrifice sacrifice herself]] [[BarrierMaiden to save the world]]. Which ending you get, and whether the world is saved or not, is dependent on [[RelationshipValues Arnice's relationship with Lily]], [[spoiler:with two showing Arnice and Lily staying together at the cost of the world, while another two showing the world being saved at the cost of their love for each other. It's only in the GoldenEnding where the world is saved with the two remaining together]].
* Proving this trope to be OlderThanTheyThink, 1973's ''Anime/{{Devilman}}'' revolves around Ryo taking any means he deems necessary to ensure his ChildhoodFriend and the only person he loves, Akira Fudo, will survive the impending apocalypse [[spoiler:which he himself has instigated, as he is literally Satan incarnate. [[DownerEnding It does not end well]]]]. Anno and Sadamoto have even freely admitted that Evangelion was basically [[RecycledInSpace Devilman with a mecha bent]].

* This is also apparent in Eren and Mikasa’s relationship in ''Manga/AttackOnTitan'', where they seem to be at the center of every major turning points throughout the story.
-->'''Kawakubo:''' The story of Eren and Mikasa can be read from that of sekaikei. It’s difficult to explain, but he [Isayama] felt that he had to decide on his stance, or rather, make his stance clear, in order to draw a manga by his own intentions towards the sekaikei.

%%* ''LightNovel/ShakuganNoShana''

%%* ''LightNovel/IriyaNoSoraUFONoNatsu''

* in ''[[VideoGame/OneShot OneShot]]'' [[TheChosenOne The only one who can save the world]] is a young child named Niko. [[AmbiguousGender They]] have been transported to this world and can only return home once they return the sun (a giant lightbulb) to the top of a tower. [[spoiler: At the end of the game it is revealed that the only way for Niko to return home is to smash the lighbulb - which would destroy the world. The player- whom [[BreakingTheFourthWall Niko has been talking with directly throughout the game]] [[SadisticChoice has to choose between saving the world and letting Niko return home]]. The [[GoldenEnding true ending]] lets you do both, but this was released after the original game and requires getting one of the other endings first.]]

* ''Anime/PuellaMagiMadokaMagica'' has magic dependent on EmotionalPowers, and the relationship between [[spoiler:Madoka and Homura]]--either StarCrossedLovers or [[RomanticTwoGirlFriendship star-crossed close friends]] depending on [[AmbiguouslyGay your perspective]]--eventually has cosmological implications. By the time of [[Anime/PuellaMagiMadokaMagicaTheMovieRebellion The Movie]]'s conclusion, both characters have taken a stab at [[spoiler:rewriting the laws of reality for the greater good, tragically pushing their partner away in the process.]]

* in ''[[VideoGame/OneShot OneShot]]'' [[TheChosenOne The only one who can save the world]] is a young child named Niko. [[AmbiguousGender They]] have been transported to this world and can only return home once they return the sun (a giant lightbulb) to the top of a tower. [[spoiler: At the end of the game it is revealed that the only way for Niko to return home is to smash the lighbulb - which would destroy the world. The player- whom [[BreakingTheFourthWall Niko has been talking with directly throughout the game]] [[SadisticChoice has to choose between saving the world and letting Niko return home]]. The [[TrueEnding true ending]] lets you do both, but this was released after the original game and requires getting one of the other endings first.]]

* ''Manga/AttackOnTitan''

%%* ''Manga/KannazukiNoMiko'', with the twist that the relationship is between [[GirlsLove two such girls]].

Not to be confused with the [[TrappedInAnotherWorld Isekai Genre]] or the IyashikeiGenre.

* in ''[[VideoGame/OneShot OneShot]]'' [[TheChosenOne The only one who can save the world]] is a [[CatFolk young cat girl]] named Niko. [[AmbiguousGender They]] have been transported to this world and can only return home once they return the sun (a giant lightbulb) to the top of a tower. [[spoiler: At the end of the game it is revealed that the only way for Niko to return home is to smash the lighbulb - which would destroy the world. The player- whom [[BreakingTheFourthWall Niko has been talking with directly throughout the game]] [[SadisticChoice has to choose between saving the world and letting Niko return home]]. The [[TrueEnding true ending]] lets you do both, but this was released after the original game and requires getting one of the other endings first.]]