History HonkaiImpact3rd / TropesAToF

** The "bubble universes" in the Sea of Quanta are essentially pocket universes simulating the effects of ForWantOfANail. Chapter 25-EX elaborates further about the nature of bubble universes: they used to be proper realities that exist in the Imaginary Tree, but had their link to the Tree severed for one reason or another. Bubble universes can sustain themselves in 2 ways: by simply absorbing energies around them (including other bubble universes)[[note]]this is called the "brute force" method and works better with bigger bubble universes, as their size means they can absorb energy more efficiently[[/note]], or by creating a link to another reality within the Imaginary Tree, so that the bubble universe will get a share of the energy provided by the Tree[[note]]this is called the "workaround" and works better with smaller bubble universes, as the Tree will deem the small bubble as a "newborn reality" that needs sustenance[[/note]].

* ForWantOfANail: Chapter 11 has multiple "bubble universes" in the Sea of Quanta, demonstrating how the world might have turned out had things been different:
** World 1 is a timeline where Cecilia actually survived the Second Honkai Eruption, and founded St. Freya. As a result, this timeline is actually better than reality in some ways, including Cocolia being a Valkyrie and a genuinely heroic person.
** World 2 is a timeline where Otto and Theresa are running what is implied to be the same orphanage Cocolia owned in the main timeline, and Otto, unlike his real self, is a genuinely good person.
** World 3 is a timeline where the Second Honkai Eruption happens several years later than it should, and Anti-Entropy was slaughtered by Schicksal, with Welt being the only survivor. [[spoiler:Welt rebuilt the organisation, stole Sirin's core, and proceeded to return the favor, basically annihilating Schicksal and slaughtering nearly all of its Valkyries, including Kiana and Mei.]]

* CrapsaccharineWorld: This setting may be placed in a generally thriving TwentyMinutesIntoTheFuture, but no one is safe here, as there's Honkai all over the place, and the organizations opposing them are not much better. Also, the Valkyries [[RedshirtArmy are extremely expendable]], and generally, their lifespans get [[YourDaysAreNumbered cut off for good measure]] by artificial Stigmata augmentation[[note]]although among playable characters, only Himeko (presumably) has this problem[[/note]].

* CreatorCameo: In the first Summer event, the miHoYo building exists in Soukai City. In the story, you can sometimes see miHoYo advertisements and logos in Arc City.

* AlliterativeName: Three of the Kaslanas go with this trend, namely Kiana Kaslana, Kallen Kaslana, and Kevin Kaslana. Aside from them, there's also Rita Rossweisse.

* AlienInvasion: The "Alien Space" supplementary comic, set some time after the events of "A Post-Honkai Odyssey", has "Otto" [[spoiler:(Void Archives)]] explain to Welt that the "Sky People" are a civilization from a faraway planet, who have apparently conquered the Honkai of their own planet and used them as an energy source. They're also looking for Honkai energy in other planets to try to harvest them; they send interplanetary vessels shaped like natural space rocks to random planets filled with their "scouts" in order to analyze the Honkai energy levels and the stage of civilization in said planets. Those "scouts" are the monsters you find in the "A Post-Honkai Odyssey" mode.

** In a variant, you can upgrade your [=ELFs=] the same way (use specific leveling and upgrading materials), with a twist: they also have "ELF Fragments" like Valkyrie battlesuits, and in order to increase their star rank (and thus max level and stats), you have to acquire enough of their fragments. Unique to them is the "ELF Talents", skills that can [[PowersAsPrograms be equipped to your ELFs]] and leveled up by their own, with specific materials. To equip the talents, you have to unlock their talent slots, which also costs materials. Version 3.7 gives a big overhaul to the ELF mechanics following Book of Fuxi's release: their [[{{Cap}} max level]] is no longer dependent on the star rank (which is upgraded by collecting their fragments), and each ELF now has a predetermined skillset instead of having to take skills from the "talent bank" and slot them in. Each of the ELFs' skills (basic attack, Ultimate, passive, team) have sub-skills that can be unlocked and upgraded with materials, and with leveling the ELF up to certain levels, upgrading their star rank, and leveling up the previous sub-skill as a prerequisite.

** In Chapter 9, [[spoiler: Himeko, who had been looking for a man to settle down with, dies after suppressing the Herrscher of the Void.]]

** In Chapter 28, [[spoiler:Otto dies after finally fulfilling his wish to create an alternate timeline where Kallen survives the Honkai beast rampage that he released to enable her to escape from her execution.]]
** In Chapter 35, [[spoiler: Kelvin is finally able to reunite with his beloved Dr. MEI after Kiana gains the authority of Finality]].

* AbortedArc: Chapter 1 of the game involves an unmanned flying CoolAirship that our Valkyries try to stop before it could endanger the city. Inside, they find out that someone sent that ship specifically "for Kiana" and that it talks about "4 gems" to power the ship up, which leads them to find Herrscher Cores, starting from Wendy. This only serves as {{Foreshadowing}} to [[spoiler:Kiana being the vessel for the Herrscher of the Void (who used to have those 4 gems)]]; the story after the Wendy plot goes to other directions and said mysterious ship is never addressed again.

* {{Fanservice}}: A document with the volume of a [=PhD-level=] thesis paper could be written trying to exhaustively note all the fanservice elements in the Valkyries' battlesuits and alternate outfits, the Stigmata, and even Ai-chan, with BareYourMidriff, CleavageWindow, {{Stripperiffic}} and VaporWear as four of the most prevalent. More specific instances include:

* ChunkyUpdraft: In one cutscene in Chapter 17, the activation of the 2nd Divine Key causes the ruined buildings in Nagazora to get uprooted and float up.

[[WMG:[[center: [-''VideoGame/HonkaiImpact3rd'' Tropes: '''A to F''' | HonkaiImpact3rd.TropesGToL | HonkaiImpact3rd.TropesMToR | HonkaiImpact3rd.TropesSToZ -]]]]]

[[WMG:[[center: [-''VideoGame/HonkaiImpact3rd'' Tropes: '''A to F''' | [[HonkaiImpact3rd.TropesGToL | [[HonkaiImpact3rd.TropesMToR | [[HonkaiImpact3rd.TropesSToZ -]]]]]

[[WMG:[[center: [-''VideoGame/HonkaiImpact3rd'' Tropes: '''A to F''' | [[VideoGame/HonkaiImpact3rdTropesGToL G to L]] | [[VideoGame/HonkaiImpact3rdTropesMToR M to R]] | [[VideoGame/HonkaiImpact3rdTropesSToZ S to Z]]-]]]]]

*** In one of the side missions, Sora asks Seele to help her find a boy who sneaks out to gather some supplies on his own. When Seele arrives at the mining area, a boy warns Seele that the area is off limits. Suddenly, a group of monsters arrives, and Seele fends them off. After that, Seele advises the boy to never take on everything alone and trust in his friends' strength. Seele introduces herself to the boy, and in return, the boy introduces himself as Lyle Collodi. For those who played APHO Chapter 2, Lyle Collodi is a member of the 2nd Squad, known for his confident and friendly personality, although sometimes his antics annoy other people. In certain conversations, Lyle almost constantly mentions a girl who was his childhood sweetheart. He never gets her name right, but he is still looking for her. Given the context of APHO Chapter 2, it's implied that Seele is Lyle's childhood sweetheart, although time will tell if Lyle ends up secretly referring to her as such.

** Version 3.4 introduces "PRI-ARM" weapons, upgraded versions of existing weaponry that have 6-star rarity. They have a max level of 65, higher attack power and upgraded skills, but to make them available for crafting, it requires you to have the corresponding existing weaponry in question[[note]]E.g Magstorm for MAG-Typhoon, Ice Epiphyllum for Frozen Naraka[[/note]] and they consume new upgrade materials that take quite some time to farm. Every PRI-ARM seen so far is a ''significantly'' improved version of the "[[WeaponOfChoice signature weapon]]" of older S-Rank Valkyries and clearly intended to be used by them, having abilities that are tailor-made to address their weak points and make them much more viable in the endgame.[[labelnote:For Example...]] Some of Lightning Empress's biggest failings are her short range, complete lack of stopping power and needing to use her full combo to apply a powerful debuff. The improved Magstorm PRI-ARM (dubbed "MAG-Typhoon") can apply this debuff by itself, temporarily grants Lightning Empress a considerable amount of [[ImmuneToFlinching Ignore Interruption]], paralyzes enemies, moves her closer to the target ''and'' deals significant damage all with the press of its ''completely-free-of-SP-cost'' active skill, which even leads straight into LE's powerful combo move and can be used up to three times in quick succession, single-handedly turning what was primarily a support character into a top tier elemental damage dealer.[[/labelnote]] However, the ability to upgrade these weapons into the PRI-ARM stage is locked until the player reaches Level 80, so these are exclusive to very long-time players deep into their endgame experience.

*** From the Main Story:
*** '''"Elegy to Yesterday" arc[[note]]Chapters 15 - 17[[/note]]:''' In Chapter 16, Mei and Tesla set up a few Honkai energy detectors to try to detect Kiana in the ruins of Nagazora City; they specifically talk about finding "somewhere wide and flat" to place them, and Tesla claims that it's still a new tech. However, they could only find Mei's trace of Herrscher energy instead. This is a reference to the early part of the first chapter of the game mode, where the older Mei and the Protagonist set up multiple detectors in different places in the St. Fountain (specifically, wide and flat places) to find the missing Welt, and they expect to find two results: Welt, and Mei herself.
*** '''"Here Lies Bellflower" arc[[note]]Chapters 18 - 19[[/note]]:''' In Chapter 18, one of the files titled "Project Galactic Stairway" mentions that its primary goal is to construct a space elevator as a direct transport link for building a massive space station in low Earth orbit, which also serves as a bridgehead for human space exploration efforts. The aforementioned project is set to be completed by 2025. This is a subtle reference to the game mode's setting, which takes place 8 years after the banishment of the Honkai to the outer space at some point in 2017.
*** '''"Thus Spoke Apocalypse" arc[[note]]Chapters 26 - 28[[/note]]:'''
*** In one of the side missions, Durandal and Tesla are visiting Reanna's old residence in Kolosten. There, they discovered a safe box containing a letter and a comb. Durandal then reads the letter, and when this happens, the scene changes to Reanna's old photo with a building that appears to be the Sa'ad Station. In ''A Post-Honkai Odyssey'', Sa'ad Station is one of the points of interest in St. Fountain where Theresa dispatches the 3rd Squad to investigate the anomalies in that city while searching for the missing Welt Yang. The photo also suggests that at some point Reanna was on vacation in St. Fountain, years before the strange phenomenon happened in that city.
*** Another side mission has Bronya having a conversation with Rita where the latter advises her to add some flashiness and elegance to her combat style to help her reputation and have more people buy her services. One of Bronya's battlesuits, Silverwing N-EX, shows that her fighting style becomes more elegant and refined. Sure enough, she has two rookies working with her, despite her status as a Substitute Captain for the 2nd Squad. The developers confirm that this is a result of Bronya's "acquired taste in elegance and composure", meaning that Bronya took her advice to heart.
*** In one of the secret conversations, [[spoiler:Otto tells Void Archives that if he hadn't been depleting all the Honkai energy he gathered as a part of creating an alternate timeline where Kallen never died, the "invasion" would have happened. Void Archives then berates Otto, telling him that he should've resigned as the Schicksal Overseer 60 years ago, only for Otto to tell the Divine Key to take care of Theresa after he's gone. Following Theresa's inauguration as the new Schicksal Overseer, Void Archives is making his own way to become one of the antagonists of ''A Post-Honkai Odyssey'' by taking one of the now-dead Otto Apocalypse's empty clones, and, eight years later, secretly instigating the invasion of the Sky People under the pretext of stopping the Honkai for good. This conversation also implies that Otto knew of the existence of living things beyond the scope of the Honkai, particularly the aforementioned Sky People.]]
*** From the "Elysian Realm" game mode:
*** In one of the conversations between Mei and Elysia, Elysia tells Mei that she is still a young and tender girl, and a few years later, she will become a graceful and dignified woman. Mei's older self in ''A Post-Honkai Odyssey'' clearly shows that she indeed becomes the woman that Elysia predicted years earlier during Mei's stay in the realm.
*** In one of the conversations between Mei and Vill-V, Mei learns that she is the creator of the Divine Keys. One of them is [[spoiler:Void Archives]], the first Divine Key with tons of potential, including its will to defy its creator. Vill-V offers to teach Mei the countermeasures, only for Mei to reject her offer, hoping that she wouldn't be fighting it again. Guess what kind of enemy Mei fights against eight years later?

*** '''"Elegy to Yesterday" arc[[note]]Chapters 15 - 17[[/note]]:''' In Chapter 16, Mei and Tesla set up a few Honkai energy detectors to try to detect Kiana in the ruins of Nagazora City; they specifically talk about finding "somewhere wide and flat" to place them, and Tesla claims that it's still a new tech. However, they could only find Mei's trace of Herrscher energy instead. This is a reference to the early part of the first chapter of the game mode, where the older Mei and the Protagonist set up multiple detectors in different places in the St. Fountain (specifically, wide and flat places) to find the missing Welt, and they expect to find two results: Welt, and Mei herself.
*** '''"Here Lies Bellflower" arc[[note]]Chapters 18 - 19[[/note]]:''' In Chapter 18, one of the files titled "Project Galactic Stairway" mentions that its primary goal is to construct a space elevator as a direct transport link for building a massive space station in low Earth orbit, which also serves as a bridgehead for human space exploration efforts. The aforementioned project is set to be completed by 2025. This is a subtle reference to the game mode's setting, which takes place 8 years after the banishment of the Honkai to the outer space at some point in 2017.
*** '''"Thus Spoke Apocalypse" arc[[note]]Chapters 26 - 28[[/note]]:'''
*** In one of the side missions, Durandal and Tesla are visiting Reanna's old residence in Kolosten. There, they discovered a safe box containing a letter and a comb. Durandal then reads the letter, and when this happens, the scene changes to Reanna's old photo with a building that appears to be the Sa'ad Station. In ''A Post-Honkai Odyssey'', Sa'ad Station is one of the points of interest in St. Fountain where Theresa dispatches the 3rd Squad to investigate the anomalies in that city while searching for the missing Welt Yang. The photo also suggests that at some point Reanna was on vacation in St. Fountain, years before the strange phenomenon happened in that city.
*** Another side mission has Bronya having a conversation with Rita where the latter advises her to add some flashiness and elegance to her combat style to help her reputation and have more people buy her services. One of Bronya's battlesuits, Silverwing N-EX, shows that her fighting style becomes more elegant and refined. Sure enough, she has two rookies working with her, despite her status as a Substitute Captain for the 2nd Squad. The developers confirm that this is a result of Bronya's "acquired taste in elegance and composure", meaning that Bronya took her advice to heart.
*** In one of the secret conversations, [[spoiler:Otto tells Void Archives that if he hadn't been depleting all the Honkai energy he gathered as a part of creating an alternate timeline where Kallen never died, the "invasion" would have happened. Void Archives then berates Otto, telling him that he should've resigned as the Schicksal Overseer 60 years ago, only for Otto to tell the Divine Key to take care of Theresa after he's gone. Following Theresa's inauguration as the new Schicksal Overseer, Void Archives is making his own way to become one of the antagonists of ''A Post-Honkai Odyssey'' by taking one of the now-dead Otto Apocalypse's empty clones, and, eight years later, secretly instigating the invasion of the Sky People under the pretext of stopping the Honkai for good. This conversation also implies that Otto knew of the existence of living things beyond the scope of the Honkai, particularly the aforementioned Sky People.]]

*** In one of the conversations between Mei and Elysia, Elysia tells Mei that she is still a young and tender girl, and a few years later, she will become a graceful and dignified woman. Mei's older self in ''A Post-Honkai Odyssey'' clearly shows that she indeed becomes the woman that Elysia predicted years earlier during Mei's stay in the realm.
*** In one of the conversations between Mei and Vill-V, Mei learns that she is the creator of the Divine Keys. One of them is [[spoiler:Void Archives]], the first Divine Key with tons of potential, including its will to defy its creator. Vill-V offers to teach Mei the countermeasures, only for Mei to reject her offer, hoping that she wouldn't be fighting it again. Guess what kind of enemy Mei fights against eight years later?

*** In one of the side missions, Durandal and Tesla are visiting Reanna's old residence in Kolosten. There, they discovered a safe box containing a letter and a comb. Durandal then reads the letter, and when this happens, the scene changes to Reanna's old photo with a building that suspiciously resembles Sa'ad Station. In ''A Post-Honkai Odyssey'', Sa'ad Station is one of the points of interest in St. Fountain where Theresa dispatches the 3rd Squad to investigate the anomalies in that city while searching for the missing Welt Yang. The photo also suggests that at some point Reanna was on vacation in St. Fountain, years before the strange phenomenon happened in that city.

** In Chapter 16, Mei and Tesla set up a few Honkai energy detectors to try to detect Kiana in the ruins of Nagazora City; they specifically talk about finding "somewhere wide and flat" to place them, and Tesla claims that it's still a new tech. However, they could only find Mei's trace of Herrscher energy instead. This is a reference to the early part of "A Post-Honkai Odyssey", where the older Mei and the protagonist set up multiple detectors on different places in the St. Fountain (specifically wide and flat places) to find the missing Welt, and they expect to find two results: Welt, and Mei herself.

* DungeonShop: In the Matrix Explore game mode, you may come across the HOMU Shop (indicated by a glowing golden portal, while others are blue) where you can buy things from HOMU with the Honkai Energy cubes you collect throughout the play. HOMU will sell 3 items at random, from a selection of: health pickups, SP pickups, special "buffs" that strengthen your characters, or "cards" that can be activated to generate different effects.