History Anime / DecaDence

* HunterOfMonsters: Similar to VideoGame/MonsterHunter and VideoGame/GodEater, the setting of the story is about fighting off monsters that threaten humanity. The Gears and Tankers are soldiers who fight the Gadoll creatures using enlarged weaponry and use the Gadoll parts they retrieve as resources and fuel. Howver, the Tankers treat this as a real job, while the Gears only see this as a video game.

* MixAndMatchWeapon: The main weaponry of Gears and Tankers are various weapons that function like a HarpoonGun and PileBunker combined. The weapons were essentially made to launch large metal spears that are hollow inside so that when they are successfully penetrated in a Gadoll's flesh, it can drain the blood out of it like a syringe. The blood is then absorbed into the fuel packs of the Gears and Tankers to allow them constant flight in the Gadoll's zero gravity zone. The weapons come in different sizes and shapes such as [[ArmCannon Arm Cannons]], BladeOnAStick, and so on.

* MixAndMatchWeapon: The main weaponry of Gears and Tankers are various weapons that function like a HarpoonGun and PileBunker combined. The weapons essentially made to launch large metal spears that are hollow in the inside so that when they are successfully penetrated in a Gadoll's flesh, it can drain the blood out of it like a syringe. The blood is then absorbed into the fuel packs of the Gears and Tankers to allow them constant flight in the Gadoll's zero gravity zone. The weapons come in different sizes and shapes such as [[ArmCannon Arm Cannons]], BladeOnAStick, and so on.

* HunterOfMonsters: Similar to VideoGame/MonsterHunter and VideoGame/GodEater, the setting of the story is about fighting off monsters that threaten humanity. The Gears and Tankers are the soldiers who fight the Gadoll creatures and use the Gadoll parts as resources and fuel. The Tankers treat this as a real job, while the Gears only see this as a video game.

* TwoDVisualsThreeDEffects: The fortress itself is an entirely 3D creation, as are all the vehicles.

In reality, in the latter part of the 2400s, air pollution had reached lethal levels and society broke down. In the midst of all this, large {{Mega Corp}}s took over and developed cyborgs to replace their human workforces, with the robotic beings quickly coming to outnumber humans. Eventually, one of these corporations acquired the rights to humanity itself, putting a gigantic dome over the continent of Eurasia and making it a wildlife preserve for humans with its own self-governing system... [[TrumanShowPlot and an entertainment facility for cyborgs]]. With humans none the wiser, they had become the {{NPC}}s in a bizarre mix of {{LARP}}ing and [[VirtualReality VR]] {{MMORPG}}, with Gadoll being genetically-manufactured monsters created to keep things interesting and Gears actually being the human avatars of cyborgs who now reside off-planet. Kaburagi is one such cyborg, being a veteran player who was days away from quitting the game before discovering that Natsume is actually a "bug" in the system; in this case an {{Unperson}} with a malfunctioning [[ExplosiveLeash embedded chip]]. But rather than kill her as per company policy, her strange existence renews Kaburagi's interest in the game and he decides it would be far more interesting to take her on as an apprentice. What follows throws the intended "storyline" of the game completely off the rails, for better and for worse.

* BlackComedy: Fittingly for a series set in such a bleak, horrifying dystopia, there are numerous jokes where the comedy comes from someone or several someones getting injured, tortured, or humiliated; an example of all 3 at once is the Bug Correctional Facility, where the warden jams low-quality "recycled" oxyone into cyborgs' [[AssShove "rear ports"]] all while gleefully saying "Here you go!" as if he were a fast-food worker handing out orders to a line of customers.

* AlienBlood: Oxyone, which is green gadoll "blood" used to power the equipment Gears used to fight them, Deca-dence's infrastructure, and the cyborgs that play the game.

* [[BreakHisHeartToSaveHim Break Her Heart to Save Her]]: In Episode 4, Kaburagi learns that the upcoming gadoll nest raid is [[spoiler:a hopeless boss fight where the admin fully expects all players to be wiped out, in order to reintroduce retired legendary players as part of a storyline.]] He visits Natsume in her home, yells at her about the futility of the fight against the gadoll and her dream of peace, before sabotaging her oxyone tank, rendering her unable to fight.

* MixAndMatchCritters: Pipe, the Gadoll Kaburagi took as pet looks like a combination of sorts between a grub, a dog, a chameleon and a whale.

* SpannerInTheWorks: The reason Bugs are so feared and hunted down is aside from ruining the players' immersion, they can seriously disrupt the carefully constructed plots and events the administration designs for them. A key example of this is Episode 5, where [[spoiler:to save Natsume, a bug, Kaburagi defeats the HopelessBossFight Gaddoll Alpha and accidentally triggers a major, unfinished boss fight that almost ends up destroying Deca-dence and forcing the admin to scramble.]]

* TrumanShowPlot: The world we see in the first episode is actually a giant VR arena for cyborgs.

* WhatMeasureIsANonHuman: Inverted, as [[spoiler:humans are treated as unimportant non-player characters that flesh out the world of the game. Any humans that interfere with the corporation's plans for how the "game" should function are viewed as "bugs" that should be killed without a second thought, and the idea that humans regularly die as a result of Gadoll attacks is considered negligible.]]

* AlienBlood: Oxyone, which is green gadoll "blood" used to power the equipment Gears used to fight them, Deca-dence's infrastructure, and the [[spoiler:cyborgs that play the game.]]

* ArcWords: "We exist for the sake of the system." and "The world must be rid of bugs." [[spoiler:Both are said by Hugin, the mysterious administrator that oversees the smooth operation of Deca-dence, and thus the all-powerful AI they serve alongside making sure that Kaburagi continues to do his job as a "bug hunter". He later throws this back in his face as an IronicEcho: "The world ''needs'' bugs."]]
* ArtShift: [[spoiler: The cyborgs that control the Gears are far more cartoonish than the humans of the setting.]]

* CityInABottle: [[spoiler:The human [=NPCs=] are totally unaware that the entire outside world is one giant playground for cyborgs, run by the Solid Quake Corporation.]]
* CyberPunk: [[spoiler:The world outside the "zone" is actually a colorful dystopian hell controlled utterly by the Solid Quake corporation, with the zone itself used to give its cyborg workers an out for the obscene amounts of stress the company puts on them.]]

* FirstEpisodeTwist: The final scene of the first episode has [[spoiler: [[TrumanShowPlot small technicolor robots viewing the main characters]]. Episode 2 goes on to reveal that after the apocalypse, full-body cyborgs had taken control of the planet and turned it into a hybrid wildlife preserve and {{MMORPG}}. All the soldiers we've seen are remotely-controlled avatars, and humans are none-the-wiser {{NPC}}s with tracking/control chips lodged inside them. Kaburagi turns out to be one of these cyborgs, whose discovery that Natsume is a "bug" in the system lacking one of these chips piques his interest and gives him a new lease on life.]]
* GlassCannon: A Gear becomes this if they remove their "Limiter." [[spoiler:They gain increased fine control and sensory information with their Gear avatar at the risk of damage to their cyborg bodies should they get hit by the gadoll.]]

* MegaCorp: The Solid Quake corporation, which [[spoiler:controls Deca-dence and appears to own at least a portion of the surviving unmodified humans.]]

* RobotsEnslavingRobots: [[spoiler:Being one of Solid Quake's legion of cyborgs and [=AIs=] does ''not'' mean you are any freer from them.]]

* TrumanShowPlot: [[spoiler:The world we see in the first episode is actually a giant VR arena for cyborgs.]]

* WhamEpisode: Episode 2, carrying on from the ending of the first, reveals that [[spoiler:the Deca-Dence fortress, as well as the entire continent of Eurasia, is really something between a wildlife sanctuary for humans and a real-life video game setting for cyborgs.]]

Hundreds of years have passed since humanity was driven to the brink of extinction by the sudden emergence of unknown life forms known as Gadolls. The remainder of population is now limited to the Eurasian continent, where they dwell in a 3,000 meter-high mobile fortress called Deca-Dence, which was built to protect themselves from the Gadoll threat.

On the Deca-Dence lives Natsume, a Tanker (i.e., normal human) girl who, after a near-death incident as a child that cost her a limb, dreams of joining The Power, the group of warriors who fight the Gadolls daily and mostly consist of the [[BioAugmentation genetically-enhanced Gears]]. Unfortunately for her, she gets stuck on armor cleanup duty, forced to scrub the outside of the fortress clean of any goo and body parts that result from the aftermath of fights. One day, when the Deca-Dence gets attacked while she's on duty, another scrape with death has her learn that her surly supervisor Kaburagi is actually a former fighter. Cue some badgering, and he soon relents to teaching her the skills needed to defend her home and join the ranks of The Power herself. At least, that how things are from ''her'' perspective.

In reality, in the latter part of the 2400s, air pollution had reached lethal levels and society was beginning to break down. In the midst of all this, large {{Mega Corp}}s developed cyborgs to replace their human workforces, with the robotic beings quickly coming to outnumber humans. Eventually, one of these corporations acquired the rights to humanity itself, putting a gigantic dome over the continent of Eurasia and making it a wildlife preserve for humans with its own self-governing system... [[TrumanShowPlot and an entertainment facility for cyborgs]]. With humans none the wiser, they had become the {{NPC}}s in a bizarre mix of {{LARP}}ing and [[VirtualReality VR]] {{MMORPG}}, with Gadolls being genetically-manufactured monsters created to keep things interesting and Gears actually being the human avatars of cyborgs who now reside off-planet. Kaburagi is one such cyborg, being a veteran player who was days away from quitting the game before discovering that Natsume is actually a "bug in the system"; in this case an {{Unperson}} with a malfunctioning [[ExplosiveLeash embedded chip]]. But rather than kill her as per company policy, her strange existence renews Kaburagi's interest in the game and he decides it would be far more interesting to take her on as an apprentice. What follows throws the intended "storyline" of the game completely off the rails, for better and for worse.

* AnimalisticAbomination: The Gadolls come in a wide variety of forms and sizes, looking like insects, crustaceans, mollusks, and reptiles of massive size that have [[AlienBlood green blood]].

In reality, in the latter part of the 2400s, air pollution had reached lethal levels and society was beginning to break down. In the midst of all this, large {{Mega Corp}}s developed cyborgs to replace their human workforces, with the robotic beings quickly coming to outnumber humans. Eventually, one of these corporations acquired the rights to humanity itself, putting a gigantic dome over the continent of Eurasia and making it a wildlife preserve for humans with its own self-governing system... [[TrumanShowPlot and an entertainment facility for cyborgs]]. With humans none the wiser, they had become the {{NPC}}s in a bizarre mix of {{LARP}}ing and [[VirtualReality VR]] {{MMORPG}}, with Gadolls being genetically-manufactured monsters created to keep things interesting and Gears actually being the human avatars of cyborgs who now reside off-planet. Kaburagi is one such cyborg, being a veteran player who was days away from quitting the game before discovering that Natsume is actually a "bug in the system"; in this case an {{Unperson}} with a malfunctioning [[ExplosiveLeash embedded chip]]. But rather than kill her as per company policy, her strange existence renews Kaburagi's interest in the game and he decides it would be far more interesting to take her on as an apprentice while keeping her presence a secret from the higher-ups. What follows throws the intended "storyline" of the game completely off the rails, for better and for worse.

* WhamEpisode: Episode 2, carrying on from the non-sequitor ending of the first, reveals th [[spoiler:the Deca-Dence fortress, as well as the entire continent of Eurasia, is really something between a wildlife sanctuary for humans and a real-life video game setting for cyborgs.]]

* [[BreakHisHeartToSaveHim Break Her Heart to Save Her]]: In EP 4, Kaburagi learns that the upcoming gadoll nest raid is [[spoiler:a hopeless boss fight where the admin fully expects all players to be wiped out, in order to reintroduce retired legendary players as part of a storyline.]] He visits Natsume in her home, yells at her about the futility of the fight against the gadoll and her dream of peace, before sabotaging her oxyone tank, rendering her unable to fight.

* HopeSpot: At the end of Episode 5, [[spoiler:the HopelessBossFight mentioned above as well as an unfinished {{Kaiju}} encounter end up getting defeated thanks to Kaburagi removing all his limiters... however, as everyone revels in their victory, a bunch of gigalinds spawn not too far away. While the Gears revel in this new challenge, the humans realize all they've done is for nothing, and Kaburagi is seemingly killed for changing the storyline]].

In reality, in the latter part of the 2400s, air pollution had reached lethal levels and society was beginning to break down. In the midst of all this, large {{Mega Corp}}s developed cyborgs to replace their human workforces, with the robotic beings quickly coming to outnumber humans. Eventually, one of these corporations acquired the rights to humanity itself, putting a gigantic dome over the continent of Eurasia and making it a wildlife preserve for humans with its own self-governing system... [[TrumanShowPlot and an entertainment facility for cyborgs]]. With humans none the wiser, they had become the {{NPC}}s of a bizarre mix of {{LARP}}ing and [[VirtualReality VR]] {{MMORPG}}, with Gadolls being the genetically-manufactured monsters created to keep things interesting and Gears actually being the human avatars of cyborgs who now reside off-planet. Kaburagi is one such cyborg, being a veteran player who was days away from quitting the game before discovering that Natsume is actually a "bug in the system"; in this case an {{Unperson}} with a malfunctioning [[ExplosiveLeash embedded chip]]. But rather than kill her as per company policy, her strange existence renews Kaburagi's interest in the game and he decides it would be far more interesting to take her on as an apprentice while keeping her presence a secret from the higher-ups. What follows throws the intended "storyline" of the game completely off the rails, for better and for worse.

Hundreds of years have passed since humanity was driven to the brink of extinction by the sudden emergence of unknown life forms known as Gadoll. The remainder of population is now limited to the Eurasian continent, where they dwell in a 3,000 meter-high mobile fortress called Deca-Dence, which was built to protect themselves from the Gadoll threat.

On the Deca-Dence lives Natsume, a Tanker (i.e., normal human) girl who, after a near-death incident as a child that cost her a limb, dreams of joining The Power, the group of warriors who fight the Gadoll daily and mostly consist of the [[BioAugmentation genetically-enhanced Gears]]. Unfortunately for her, she gets stuck on armor cleanup duty, forced to scrub the outside of the fortress clean of any goo and body parts that result from the aftermath of fights. One day, when the Deca-Dence gets attacked while she's on duty, another scrape with death has her learn that her surly supervisor Kaburagi is actually a former fighter. Cue some badgering, and he soon relents to teaching her the skills needed to defend her home and join the ranks of The Power herself. At least, that how things are from ''her'' perspective.

In reality, in the latter part of the 2400s, air pollution had reached lethal levels and society was beginning to break down. In the midst of all this, large {{Mega Corp}}s developed cyborgs to replace their human workforces, with the robotic beings quickly coming to outnumber humans. Eventually, one of these corporations acquired the rights to humanity itself, putting a gigantic dome over the continent of Eurasia and making it a wildlife preserve for humans with its own self-governing system... [[TrumanShowPlot and an entertainment facility for cyborgs]]. With humans none the wiser, they had become the {{NPC}}s of a bizarre mix of {{LARP}}ing and [[VirtualReality VR]] game, with Gears actually being the human avatars of cyborgs who now reside off-planet. Kaburagi is one such cyborg, being a veteran player who was days away from quitting the game before discovering that Natsume is actually a "bug in the system"; in this case an {{Unperson}} with a malfunctioning [[ExplosiveLeash embedded chip]]. But rather than kill her as per company policy, her strange existence renews Kaburagi's interest in the game and he decides it would be far more interesting to take her on as an apprentice while keeping her presence a secret from the higher-ups. Alongside their TeamPet Pipe, a small dog-like Gadoll "bug", the duo soon finds their actions inadvertently changing the world around them.

Many years have passed since humanity was driven to the brink of extinction by the sudden emergence of unknown life forms known as Gadoll. The remainder of population is now limited to the Eurasian continent, where they dwell in a 3,000 meter-high mobile fortress called Deca-Dence, which was built to protect themselves from the Gadoll threat.

In reality, in the latter part of the 2400s, air pollution had reached lethal levels and was the far larger threat towards humanity's extinction; the Gadoll appearing to decimate the population just sped up the process. In the midst of all this, large {{Mega Corp}}s developed cyborgs to replace the swiftly dwindling human workforce, with the robotic beings quickly coming to outnumber humans. Eventually, one of these corporations acquired the rights to humanity itself, putting a gigantic dome over the continent of Eurasia and making it a wildlife preserve for humans... [[TrumanShowPlot and an entertainment facility for cyborgs]]. With humans none the wiser, they had become the {{NPC}}s of a bizarre mix of {{LARP}}ing and [[VirtualReality VR]] game, with Gears actually being the human avatars of cyborgs who now reside off-planet. Kaburagi is one such cyborg, being a veteran player who was days away from quitting the game before discovering that Natsume is actually a "bug in the system"; in this case an {{Unperson}} with a malfunctioning [[ExplosiveLeash embedded chip]]. But rather than kill her as per company policy, her strange existence renews Kaburagi's interest in the game and he decides it would be far more interesting to take her on as an apprentice while keeping her presence a secret from the higher-ups. Alongside their TeamPet Pipe, a small dog-like Gadoll "bug", the duo soon finds their actions inadvertently changing the world around them.

On the Deca-Dence lives Natsume, a Tanker (i.e., civilian) girl who, after a near-death incident as a child that cost her a limb, dreams of becoming a Gear, one of the warriors who fight the Gadoll daily. Unfortunately for her, she gets stuck on armor cleanup duty, forced to scrub the outside of the fortress clean of any goo and body parts that result from the aftermath of fights. One day, when the Deca-Dence gets attacked while she's on duty, another scrape with death has her learn that her surly supervisor Kaburagi is actually a former Gear himself. Cue some badgering, and he soon relents to teaching her the skills needed to defend her home and join the ranks of the Gears herself. At least, that how things are from ''her'' perspective.

In reality, in the latter part of the 2400s, air pollution had reached lethal levels and was the far larger threat towards humanity's extinction; the Gadoll appearing to decimate the population just sped up the process. In the midst of all this, large {{Mega Corp}}s developed cyborgs to replace the swiftly dwindling human workforce, with the robotic beings quickly coming to outnumber humans. Eventually, one of these corporations acquired the rights to humanity itself, putting a gigantic dome over the continent of Eurasia and making it a wildlife preserve for humans... [[TrumanShowPlot and an entertainment facility for cyborgs]]. With humans none the wiser, they had become the {{NPC}}s of a bizarre mix of {{LARP}}ing and [[VirtualReality VR]] game, with most Gears actually being the human avatars of cyborgs who now reside off-planet. Kaburagi is one such cyborg, being a veteran player who was days away from quitting the game before discovering that Natsume is actually a "bug in the system"; in this case an {{Unperson}} with a malfunctioning [[ExplosiveLeash embedded chip]]. But rather than kill her as per company policy, her strange existence renews Kaburagi's interest in the game and he decides it would be far more interesting to take her on as an apprentice while keeping her presence a secret from the higher-ups. Alongside their TeamPet Pipe, a small dog-like Gadoll "bug", the duo soon finds their actions inadvertently changing the world around them.

In reality, in the latter part of the 2400s, air pollution had reached lethal levels and was the far larger threat towards humanity's extinction; the Gadoll appearing to decimate the population just sped up the process. In the midst of all this, large {{Mega Corp}}s developed cyborgs to replace the swiftly dwindling human workforce, with the robotic beings quickly coming to outnumber humans. Eventually, one of these corporations acquired the rights to humanity itself, putting a gigantic dome over the continent of Eurasia and making it a wildlife preserve for humans... [[TrumanShowPlot and an entertainment facility for cyborgs]]. With humans none the wiser, they had become the {{NPC}}s of a bizarre mix of {{LARP}}ing and [[VirtualReality VR]] game, with all the Gears actually being the human avatars of cyborgs who now reside off-planet. Kaburagi is one such cyborg, being a veteran player who was days away from quitting the game before discovering that Natsume is actually a "bug in the system"; in this case an {{Unperson}} with a malfunctioning [[ExplosiveLeash embedded chip]]. But rather than kill her as per company policy, her strange existence renews Kaburagi's interest in the game and he decides it would be far more interesting to take her on as an apprentice while keeping her presence a secret from the higher-ups. Alongside their TeamPet Pipe, a small dog-like Gadoll "bug", the duo soon finds their actions inadvertently changing the world around them.

On the Deca-Dence lives Natsume, a Tanker (i.e., civilian) girl who, after a near-death incident as a child that cost her a limb, dreams of becoming a Gear, one of the warriors who fight the Gadoll daily. Unfortunately for her, she gets stuck on armor cleanup duty, forced to scrub the outside of the fortress clean of any goo and body parts that result from the aftermath of fights. One day, when the Deca-Dence gets attacked while she's on duty, another scrape with death has her learn that her surly supervisor Kaburagi is actually a former Gear himself. And after some badgering, he soon relents to teaching her the skills needed to defend her home and join the ranks of the Gears herself. At least, that how things are from ''her'' perspective.

In reality, in the latter part of the 2400s, air pollution had reached lethal levels and was the far larger threat towards humanity's extinction; the Gadoll appearing to decimate the population just sped up the process. In the midst of all this, large {{Mega Corp}}s developed cyborgs to replace the swiftly dwindling human workforce, with the robotic beings quickly coming to outnumber humans. Eventually, one of these corporations acquired the rights to humanity itself, putting a gigantic dome over the continent of Eurasia and making it a wildlife preserve for humans... [[TrumanShowPlot and an entertainment facility for cyborgs]]. With humans none the wiser, they had become the {{NPC}}s of a bizarre mix of {{LARP}}ing and [[VirtualReality VR]] game, with all the Gears actually being the human avatars of cyborgs who now reside off-planet. Kaburagi is one such cyborg, being a veteran player who was days away from quitting the game. Meanwhile, Natsume is actually an unwanted "bug" in the "system"; that aforementioned childhood near-death incident caused her [[ExplosiveLeash embedded chip]] to malfunction, meaning she's effectively an {{Unperson}}. Rather than kill her as per company policy, her strange existence renews Kaburagi's interest in the game and he decides it would be far more interesting to give into her requests for training while keeping her presence a secret from the powers that be (and making sure she doesn't discover the truth herself). Alongside their TeamPet Pipe, a small dog-like Gadoll "bug", the duo soon finds their actions inadvertently changing the world around them.

Produced by Studio NUT, the series is directed by Yuzuru Tachikawa (''Anime/DeathParade'', ''Manga/MobPsycho100'') and aired during the Summer 2020 anime season. The show is licensed outside of Japan by Creator/{{Funimation}}.

In reality, in the latter part of the 2400s, air pollution had reached lethal levels and was the far larger threat towards humanity's extinction; the Gadoll appearing to decimate the population just sped up the process. In the midst of all this, large {{Mega Corp}}s developed cyborgs to replace the swiftly dwindling human workforce, with the robotic beings quickly coming to outnumber humans. Eventually, one of these corporations acquired the rights to humanity itself, putting a gigantic dome over the continent of Eurasia and making it a wildlife preserve for humans... [[TrumanShowPlot and an entertainment facility for cyborgs]]. With humans none the wiser, they had become the {{NPC}}s of a bizarre mix of {{LARP}}ing and [[VirtualReality VR]] game, with all the Gears actually being the human avatars of cyborgs who now reside off-planet. Kaburagi is one such cyborg, being a veteran player who was days away from quitting the game. Meanwhile, Natsume is actually an unwanted "bug"; that aforementioned childhood near-death incident caused her embedded [[ExplosiveLeash chip]] to malfunction and she's effectively an {{Unperson}}. Rather than kill her as per company policy, her strange existence renews his interest in the game and he decides it would be far more interesting to give into her requests for training while keeping her presence a secret from the powers that be. Only time will tell what effect these actions will have on the world going forward.

Denizens of Deca-dence fall into two categories: Gears, the warriors who fight the Gadoll daily, and Tankers, civilians lacking the skills to fight. One day, Natsume, a Tanker girl who dreams of becoming a Gear meets the surly Kaburagi, an armor repairman on Deca-Dence who turns out to have been a former Gear himself. After some badgering, he soon relents to teaching her the skills needed to defend her home and join the ranks of the Gears. At least, that how things are from ''her'' perspective.

In reality, in the latter part of the 2400s, air pollution had reached lethal levels and was the far larger threat towards humanity's extinction; the Gadoll appearing to decimate the population just sped up the process. In the midst of all this, large {{Mega Corp}}s developed cyborgs to replace the swiftly dwindling human workforce, with the robotic beings quickly coming to outnumber humans. Eventually, one of these corporations acquired the rights to humanity itself, putting a gigantic dome over the continent of Eurasia and making it a wildlife preserve for humans... [[TrumanShowPlot and an entertainment facility for cyborgs]]. With humans none the wiser, they had effectively become the {{NPC}}s of a [[{{LARP}} real-life video game]], with all the Gears actually being the human avatars of cyborgs who now reside off-planet; Kaburagi is one such cyborg, being a veteran player who was days away from quitting the game. Upon discovering that Natsume is an unwanted "bug" in the system, rather than kill her at his final act, her strange existence renews his interest in the game and he decides it would be far more interesting to give into her requests while keeping her presence a secret from the powers that be. So begins the journey of two opposites, the girl with a positive attitude who never gives up on her dreams and the realist who has long since given up on his, and how their actions will shake the future course of this world.

The series is directed by Yuzuru Tachikawa (''Manga/MobPsycho100''), produced by Studio NUT, and aired during the Summer 2020 Anime Season.

Many years have passed since humanity was driven to the brink of extinction by the sudden emergence of the unknown life forms Gadoll. Those humans that survived now dwell in a 3000 meter-high mobile fortress Deca-dence built to protect themselves from the Gadoll threat.

Denizens of Deca-dence fall into two categories: Gears, warriors who fight the Gadoll daily, and Tankers, those without the skills to fight. One day, Natsume, a Tanker girl who dreams of becoming a Gear meets surly Kaburagi, an armor repairman of Deca-dence.

This chance meeting between the seemingly two opposites, the girl with a positive attitude who never gives up on her dreams and the realist who has given up on his, will eventually shake the future course of this world.

The series, directed by Yuzuru Tachikawa (''Manga/MobPsycho100'') and produced by Studio NUT, was released during the Summer 2020 Anime Season.

'''Note:''' Due to the FirstEpisodeTwist, it is advisable to at least watch episodes 1 and 2 before browsing the tropes list if you wish to avoid being spoilered.

* WhamEpisode: Episode 2: [[spoiler:The Deca-dence fortress, as well as the entire continent of Eurasia, is really something between a wildlife sanctuary for humans and a real-life video game setting for cyborgs.]]