History Anime / IDInvaded

* YearInsideHourOutside: [[spoiler:In episode 10, it is revealed Narihisago was trapped in Kiki's ID well for two years. In the real world, he was only in Kiki's ID well for 10 minutes. This is speculated by Fukuda to be because his time in that well wasn't under real-world observation, while Hondomaki's 20 minutes or so until meeting him in Kiki's was.]]

* BloodBath: [[spoiler:In the penultimate episode, Kiki Asukai pulls a bunch of hapless computer technicians into an Id Well that takes the form of a giant bathtub full of blood and sharks. Hayaseura speculates that it's because this particular killer's first memory was a painful one.]]

* PoweredByAForsakenChild: [[spoiler:The Mizuhanome functions by piggybacking off the psychic powers of Kiki Asukai, who is kept in stasis and isolation. Each time an id-well is created she experiences her own death as a way to give clues to the investigators.]].

* SerialKillerKiller: Narihisago. Deconstructed in that the legal system still considers it to be murder when it wasn't done in a situation that could be claimed self-defense, which Nahirisago ran afoul of when he killed [[spoiler:The Challenger]] immediately on entering his house in the past. [[spoiler:Nahirisago averts this result in his well within a well, when he deliberately wounds The Challenger then allows himself to be beaten in return to justify killing the man, which drastically alters his existence for the next several subjective years.]].

* {{Cloudcuckoolander}}: Let's just say that Fukuda is not the most sane person when he's inside the Well. As a Brilliant Detective, he becomes very hammy and likes to do funny FingerGun poses and occasionally speak with GratuitousEnglish. [[spoiler:Although, silliness aside, he does become quite competent as a detective when working together with Narihisago.]]

* DigitalAvatar: The person who enters into the Well changes their appearance and name. Narihisago (as Sakaido) changes his appearance to what he looked like in his prime, Fukuda (as Anaido) appears with no scar and looks younger along with wearing an elaborate trench coat outfit, [[spoiler:Hondoumachi (as Miyo Hijiriido) wearing a cute-looking SherlockHomage outfit, and Hayaseura becomes Uraido in the John Walker outfit.]]

* ExplodingBarrels: Deliberately constructed by the Gravedigger as a boobytrap for police looking for his victims. They're filled with gasoline and are rigged to blow when the cables leading inside are cut.

* FriendlyEnemy: After the arrest of Fukuda the Perforator, he decides to spend his days in jail talking to Narihisago for company, at some points even teasingly calling him "sempai" and "partner". [[spoiler:The "partner" part plays into effect when Narihisago and Fukuda have to enter into the Well as a pair to save Hondoumachi. Although Fukuda tends to annoy Narihisago in the Well, they do surprisingly get along as Brilliant Detectives.]]
* FromBadToWorse: [[spoiler:Your only child being beaten to death by a sadistic murderer, and then watching your spouse slowly lose themselves in grief until they take their own life. Even worse, that they blame ''you'' for your child's death.]]

* JackTheRipoff: [[spoiler: It turns out the killer in episode 4 isn't the Gravedigger as initially thought, but is copying their method in order to pin a murder on them and cover up their own involvement. The real killer even visits the site of the arrest, is spotted and pursued, although at the time he's only a person of interest as the missing victim of another serial killer.]]

* MarshmallowHell: From behind when Togo grabs one of the well team to stop them from speaking. He's shown doing several reactions as he realizes he's been grabbed, that's he's not supposed to make any noise now, and then where his head is.

* MentalWorld: Played with. The Id-Well is a world created from particles emitted by a person with murderous intent and is a "snapshot" of their mind when they had those thoughts. Some, like [[spoiler:Narihisago's]] can be years old if the intent that produced them is strong enough. Although these particles can be blown away in the wind. Appropriately, the objects within it represent more abstract things that the killer was thinking at the time.

* {{Determinator}}: Narihisago, and to a lesser extent Fukuda, as they repeatedly go into the same wells to try to solve them, even though the amnesia effect means their progress is essentially luck-based each time. Narihisago even soils himself once, and is forced to take a break while the chair cleaned before his next dive in a continuous series over several days.

* FriendlyEnemy: After the arrest of Fukuda the Perforator, he decides to spend his days in jail talking to Narihisago for company, at some points, even teasingly calling him "sempai" and "partner". [[spoiler:The "partner" part plays into effect when Narihisago and Fukuda have to enter into the Well as a pair to save Hondoumachi. Although Fukuda tends to annoy Narihisago in the Well, they do surprisingly get along as Brilliant Detectives.]]

* AmnesiacHero: The great detectives only remember a false name, that they are a great detective, and they need to solve Kaeru's murder. One character posits that this may be a safety measure in case a pilot enters their own Id well. [[spoiler:If told their real name, the great detectives remember everything. Certain brain injuries can let them keep their memories like Fukuda who was only faking his amnesia.]] Most of them have only one name that ends in "ido", an exception being "Miyo Hijiriido".

** 7 for [[spoiler:John Walker. He creates seven serial killers who he allows to kill seven times (given his real identity and knowledge, he’s able to arrange for police to capture or kill the killers before their eighth attack). He even arranges each killing to occur on a specific day of the week assigned to a certain killer, which is called out by Hondomachi as part of his god complex, although technically violating that may not be enough to stop him from trying to kill Narihisago and Hondomachi.]]. There are also seven members of the Kura well team (including the pilot).

* BloodBath: [[spoiler:In the penultimate episode, Kiki Asukai pulls a bunch of hapless computer technicians into an Id Well that takes the form of a bathtub full of blood and sharks. Hayaseura speculates that it's because this particular killer's first memory was a painful one.]]

* DigitalAvatar: The person who enters into the Well changes their appearance and name. Narihisago (as Sakaido) changes his appearance to what he looked like in his prime, Fukuda (as Anaido) appears with no scar and looks younger along with wearing an elaborate trench coat outfit, [[spoiler:Hondoumachi (as Miyo Hijiriido) who's wearing a cute-looking detective outfit, and Hayaseura becomes Uraido in the John Walker outfit.]]
* DullSurprise: In episode 8, Togo wasn't flustered or disgusted when she watched Sakaido and Anaido pissing on their clothes to prevent dehydration in a desert-like ID well.

** Reconstructed: The well team determines that the large numbers of prospective victims in several Id wells are composites of the killer's actual victims, or are well-known actors or athletes as substitutes for the victims that the killer never saw, but their subconscious still gave detailed faces and clothing. The girl hiding under Kaeru's body in Kazuta's ID well even has facial features that change over time as she represents multiple victims.

* FloatingContinent: Kazuta's ID well consists of a single floating plot of land containing a house where he used to live, surrounded by empty sky. Fukuda's ID well also resembles a landmass with a cityscape floating in the void once it's fully assembled, though it starts splitting up again in short order.

* GreatDetective: The identity taken on by people who dive into wells. In the real world, Narihisago used to be this and Hondoumachi is shaping up to be this. Also notable is Wakashika on the well team.
* GroundhogDayLoop: Zig-Zagged [[spoiler:Except for Fukuda, due to his mental reconfiguration, and Hayaseura because he's actually dead,]] people who dive into an Id well are subject to an amnesia effect that's supposed to prevent them from being caught in a paradox-driven collapse if certain situations occur. Which forces the pilot(s) to try again and again when their Brilliant Detective dies without solving the mystery in that well. Some wells apparently take multiple days of retries, and usually only a few failures are shown before the success. [[spoiler:Doesn't apply to those forced into wells by Kiki's presence. Or to those who enter a well within a well, although those don't seem to loop or be escapable except by external intervention.]]

** Also goes for a version of her in the killer's well. Sakaido does manage to finally save her from the burning building, but he also realizes that this is essentially meaningless, as the real girl is dead and this one is a much younger age.

** Played With in the case of Kaeru-chan: every time a Great Detective jumps into a well, she is already dead. But as Narihisago keeps reminding himself, she is just an abstract concept that only exists within the well. The very purpose of her "existence" is to act as a murder victim, so that the Detective has a case to solve. [[spoiler:Uraido even discovers that he is apparently her murderer as he is holding a bloody knife upon his first arrival, "solving the murder" in only seconds.]]

* RoaringRampageOfRevenge: [[spoiler:Deconstructed. Narihisago gets his revenge on The Challenger by going to his house alone and gunning him down on sight. Though The Challenger was a sadistic serial killer, Narihisago is tried and imprisoned for murder.]]

** [[spoiler: Fukuda's favorite number is three. In the present times it shows by the three stitches on his head and the holes on his head (one was caused by drilling himself and the remaining two are the piercings.) Anaido's design and his mannerisms shows his love for the number three too.]]
* ScarsAreForever: Fukuda has a nasty scar on the right side of his face along with the hole on his forehead that he drilled onto himself. Hondoumachi has a similar scar because of Fukuda and although she recovered at the hospital, blood still tends to leak from her scar.

* SerialKillerKiller: Narihisago. Deconstructed in that the legal system still considers it to be murder when it wasn't done in a situation that could be claimed self-defense, which Nahirisago ran afoul of when he killed [[spoiler:The Challenger]] immediately on entering his house in the past. [[spoiler:Nahirisago averts this result in his well within a well, when when he deliberately wounds The Challenger then allows himself to be beaten in return to justify killing the man, which drastically alters his existence for the next several subjective years compared to the past in the real world.]].

** Fukuda's ID well: She was stabbed in the chest.
** Hondomachi's ID well: Kaeru hangs from a tree, her shoes neatly placed before her, having killed herself. [[spoiler: While there's even a suicide note, and the well was created by an incident of Self-Harm, it is odd that Kaeru's feet are tied together...]]

* BreakThemByTalking: Narihisago does this to The Pyrotechnician in episode 3. It's later said that it's not the first time. [[spoiler:He [[DrivenToSuicide drives him to suicide]] from across a hallway, although he did take advantage of information obtained in an Id well and discovered by the well team.]]

* {{Cloudcuckoolander}}: Let's just say that Fukuda is not the most sanest person when he's inside the Well. As a Brilliant Detective, he becomes very hammy and likes to do funny FingerGun poses and occasionally speak with GratuitousEnglish. [[spoiler:Although, silliness aside, he does become quite competent as a detective when working together with Narihisago.]]

* SerialKillerKiller: Narihisago. Deconstructed in that the legal system still considers it to be murder [[spoiler:when it wasn't done in a situation that could be considered self-defense]].

* Determinator: Narihisago, and to a lesser extent Fukuda, as they repeatedly go into the same wells to try to solve them, even though the amnesia effect means their progress is essentially luck-based each time. Narihisago even soils himself once, and is forced to take a break while the chair cleaned before his next dive in a continuous series over several days.

** Oono's ID well: Kaeru's body is already burned, then moved to its present location in a threatened apartment in a burning building.

* Determinator: Narihisago, and to a lesser extent Fukuda, as they repeatedly go into the same wells to try to solve them, even though the amnesia effect means their progress is essentially luck-based each time. Narihisago even soils himself once, and is forced to take a break while the chair cleaned before his next dive.

** Reconstructed: The well team determines that the large numbers of prospective victims in several Id wells are composites of the killer's actual victims, or are well-known actors or athletes as substitutes for the victims that the killer never saw, but their unconscious still gave detailed faces and clothing. The girl hiding under Kaeru's body in Kazuta's ID well even has facial features that change over time as she represents multiple victims.

* TheyKilledKennyAgain: Kaeru gets killed off-screen in every ID well.

** Hondomachi's ID well: Kaeru hangs from a tree, her shoes neatly placed before her, having killed herself.

** Momoki's([[spoiler:really, Narihisago's]]) ID well: She died from dehydration.

** Unnamed([[spoiler:Presumably Ayako's]]) ID well: Kaeru committed suicide by bleeding to death in a bathtub.

* WhamEpisode: Episodes 8 and 9:
** In episode 8 reveals [[spoiler:Momoki has a Mizuhanome cockpit inside of his ID well that says "Kiki Asukai".]]
** In episode 9, [[spoiler:Kiki Asukai looks exactly like Kaeru inside of her ID well.]]
** Episode 10, double wham in immediate succession: [[spoiler:Anaido isn't affected by well amnesia function, and the well they're in isn't Momoki's... It's Narihisago's]].
** Episode 11, at the end of the episode, reveals that [[spoiler:Chief Hayaseura is John Walker and Kiki Asukai is actually part of Mizuhanome System within Kura base.]]
* YearInsideHourOutside: [[spoiler:In episode 10, it is reveals Narihisago was trapped in Kiki's ID well for two years. In the real world, he was only in Kiki's ID well for 10 minutes.]]

** Reconstructed: The well team determines that the large numbers of prospective victims in several Id wells are composites of the killer's actual victims, or are well-known actors or athletes as substitutes for the victims that the killer never saw, but their unconscious still gave detailed faces and clothing. The girl hiding under Kaeru's body in Kazuta's ID well even has facial features that change over time.

* AmnesiacHero: The great detectives only remember a false name, that they are a great detective, and they need to solve Kaeru's murder. One character posits that this may be a safety measure in case a pilot enters their own Id well. [[spoiler:If told their real name, the great detectives remember everything. Certain brain injuries can let them keep their memories like Fukuda who was only faking his amnesia.]]
* AndTheAdventureContinues: [[spoiler:The manga is actually confirmed to be the sequel to the anime since Matsuoka's new co-worker, Fukusen, has appeared in both the anime and manga and Shirou Kokufu is currently the new leader of the Kura. Whether the manga will be animated into a second season is unknown.]]

** 7 for [[spoiler:John Walker. He creates seven serial killers who he allows to kill seven times (given his identity and knowledge he’s able to arrange for police to capture or kill the killers before their eighth attack). He even arranges each killing to occur on a day of the week assigned to a killer, which is called out by Hondomachi as part of his god complex, although technically violating that may not be enough to stop him from trying to kill Narihisago and Hondomachi.]]. There are also seven members of the Kura well team (including the pilot).
** 3 is for the (more or less) good guys. By the end of the first half there are three brilliant detectives, it’s revealed to be the favourite number of the [[spoiler:arithmomania]] afflicted Fukuda, the storm in [[spoiler: Narihisago’s]] Id-well lasts 3 subjective years and Narihisago’s family had three members.

* BittersweetEnding: [[spoiler:With Uraido trapped inside Kiki's ID well for good, Narihisago finally moves on from his wife and daughter's death, and most of the members of Kura regain consciousness after Kiki is put back in the Mizuhanome System. However, Fukuta and possibly Inami are still in the comatose state indefinitely. Kiki decides to return to the Mizuhanome System and someday Kura will find a way to suppress her powers and live a normal life again. [[AndTheAdventureContinues The final scene shown both Narihisago and Hondomachi start their next mission in a new Id well]].]]
* BloodBath: [[spoiler:In the penultimate episode, Kiki Asukai pulls a bunch of hapless computer technicians into an ID-Well that takes the form of a bathtub full of blood and sharks. Hayaseura speculates that it's because this particular killer's first memory was a painful one.]]

* BreakThemByTalking: Narihisago does this to The Pyrotechnician in episode 3. It's later said that it's not the first time. [[spoiler:It [[DrivenToSuicide drives him to suicide]] from across a hallway, although he did take advantage of inside information.]]

* CrossingTheDesert: Episode 8 features Sakaido and Anaido traveling through a dangerous desert Well.

* DigitalAvatar: The person who enters into the Well changes their appearance and name. Narihisago (as Sakaido) changes his appearance to what he looked like in his prime, Fukuda (as Anaido) appears with no scar and looks younger along with an elaborate trench coat outfit, [[spoiler:and Hondoumachi (as Miyo Hijiriido) who's wearing a cute-looking detective outfit. Hayaseura becomes Uraido in the John Walker outfit.]]
* DullSurprise: In episode 8, Togo wasn't flutter or disgust when she watch Sakaido and Anaido pissing their clothes to prevent dehydration in Momoki's ID well.
* EverythingTryingToKillYou: Most of the ID wells contain some kind of lethal hazard and even when they don't, John Walker's generally stalking about looking for victims.
* ExplodingBarrels: Deliberately constructed by the Gravedigger as a boobytrap for police looking for his victims. They're filled with gasoline and are rigged to blow the cables leading inside are cut.
* TheFaceless: In episode 10, when Narihisago is having his last conversation with his wife and daughter, their faces wasn't fully shown after two years has passed in Kiki's ID well. It's possible that is the reason they look exactly the same from 2016 because there are no records of them alive in 2018.
* FantasticRadiationShielding: [[spoiler:The helmets made to protect the wearer from Kiki Asukai's psychic powers. Early on a simple headpiece was enough. During the finale, a full-body suit fitted with a life support system is required.]]

* FloatingLimbs: Narihisago gained this inside Fukuda's Well. Because Fukuda's mind was fragmented, this also affected Narihisago, who started out as floating chunks of his body before refitting himself back to normal except for his left elbow, making a floating gap in his left arm. This actually becomes helpful in him solving the first case because he can detach his left forearm and hand to extend and reach for objects that he needs to use for the case like floating platforms and such. However, this remains exclusively for the first well as Narihisago is later seen to remain whole in other people's Wells because they weren't fragmented like Fukuda's was. [[spoiler:When returning to Fukuda's in the finale, Narihisago initially conceals his left arm then uses the detached hand in a surprise attack on John Walker.]]

* GreatDetective: The identity taken on by people who dive into wells. In the real world, Narihisago used to be this and Hondoumachi is shaping up to be this. Also notable is Wakashika.

* HoistByHisOwnPetard: In episode 10, Narihisago mentions he made three serial killers - The Tongue-Tearer, The Arm-Twister, and The Thigh-Severer - commit suicide using their own killing method.
* HopeSpot: We follow a girl who was kidnapped and BuriedAlive, with her final moments being livestreamed. She's determined to be rescued and assures those watching her that she'll make it out alive. The police finally find where she's buried and break her out of her confinement... only to find out that she died days ago, and the livestream everyone was watching was pre-recorded.

* JackTheRipoff: [[spoiler: It turns out the killer in episode 4 isn't the Gravedigger as initially thought, but is copying their method in order to pin a murder on them and cover up their own involvement. This does have ]]

* {{Lobotomy}}: How the Perforator kills his victims. He also did it to himself first, and survived. [[spoiler:Hondoumachi and Kazuta did too.]]

** The title itself is one. The most obvious component is how the detectives "invade" the well...then there's the layers of symbolism between "Id: Invaded" and "ID: Invaded"...

** Played With in the case of Kaeru-chan: every time a Great Detective jumps into a well, she is already dead. But as Narihisago keeps reminding himself, she is just an abstract concept that only exists within the well. The very purpose of her "existence" is to act as a murder victim, so that the Detective has a case to solve. [[spoiler:Uraido even discovers that he is apparently her murderer as he is holding a bloody knife upon arrival, "solving the murder" in only seconds.]]
* PoweredByAForsakenChild: [[spoiler:The Mizuhanome function by piggybacking off the psychic powers of Kiki Asukai, who is kept in stasis and isolation. Each time an id-well is created she experiences her own death as a way to give clues to the investigators.]].

** 7 for [[spoiler:John Walker. He creates seven serial killers who he allows to kill seven times (given his identity and knowledge he’s able to arrange for police to capture or kill the killers before their eighth attack)]]. There are also seven members of the Kura well team (including the pilot).

* AmbiguousSituation: In Episode 12, it is currently unknown if the people who went comatose by [[spoiler:Kiki's powers]] and killed inside a Id well would be revived or stay dead. Hondoumachi asks Narihisago if the people who lose their lives in the ID well will be revived, but he wasn't sure. However, for [[spoiler:Hayaseura, who kill himself and enter his own Id well, won't return to the real world.]]
** It been confirmed in the series finale, most of the members of Kura regain conscious after [[spoiler:Kiki is put back in the Mizuhanome System.]]

* BittersweetEnding: [[spoiler:With Uriado trapped inside Kiki's ID well for good, Narihisago finally move on from his wife and daughter's death, and most the members of Kura regain conscious as the result Kiki is put back in the Mizuhanome System. However, Fukuta and possibly Inami are still in the comatose state indefinitely. Kiki decides to be put back in the Mizuhanome System and someday Kura will find a way to suppress her powers and live a normal life again. [[AndTheAdventureContinues The final scene shown both Narihisago and Hondomachi start their next mission in a new Id well]].]]

* BreakThemByTalking: Narihisago does this to The Pyrotechnician in episode 3. It's later said that it's not the first time. [[spoiler:It [[DrivenToSuicide drives him to suicide]].]]

* BuriedAlive: How the Gravedigger kills their victims. They make it even worse by livestreaming their slow deaths online.

* CrossingTheDesert: Episode eight features Sakaido and Anaido traveling through a dangerous desert Well.

* DigitalAvatar: The person who enters into the Well will change their appearance and name. Narihisago (as Sakaido) changes his appearance to what he looked like in his prime, Fukuda (as Anaido) appears with having no scar and looks younger along with an elaborate trench coat outfit, [[spoiler:and Hondoumachi (as Miyo Hijiriido) who's wearing a cute-looking detective outfit.]]

* ExplodingBarrels: Deliberately constructed by the Gravedigger as a boobytrap for police looking for his victims. They're filled with gasoline and are rigged to blow when power to the workshop.
* TheFaceless: In episode 10, when Narihisago having his last conversation with his wife and daughter, their faces wasn't fully shown after two years has passed in Kiki's ID well. It's possible that is the reason they look exactly the same from 2016 because there are no records of them alive in 2018.
* FantasticRadiationShielding: [[spoiler:The helmets made to protect the wearer from Kiki Asukai's psychic powers. Early on a simple headpiece was enough. During the finale, a full-body suit filled with a life support system is required.]]

* FloatingLimbs: Narihisago gained this inside Fukuda's Well. Because Fukuda's mind was fragmented, this also affected Narihisago, who started out as floating chunks of his body before refitting himself back to normal except for his left elbow, making a floating gap in his left arm. This actually becomes helpful in him solving the first case because he can detach his left forearm and hand to extend and reach for objects that he needs to use for the case like floating platforms and such. However, this remains exclusively for the first case as Narihisago is later seen to remain whole in other people's Wells because they weren't fragmented like Fukuda's was.

* GoryDiscretionShot: In Episode 9, when Kiki accidentally shows Narihisago her memories being kill several different ways in her dreams, a shot of her has been censored into silhouettes instead.

* HoistByHisOwnPetard: In episode 10, Narihisago mentions he made three serial killers, The Tongue-Tearer, The Arm-Twister, and The Thigh-Severer to commit suicides in their own killing methods.

** Also goes for a version of her in the killer's well. Sakaido does manage to finally save her from the burning building, but he also realizes that this is essentially meaningless, as the real girl is dead.
* ImpossiblyCoolClothes: Played with. The opening scene of the series (and the promotional art) makes it look like the series is going for this, based on the first shots we see of Narihisago and his outfit...but it turns out the trope only applies to detectives' appearances in the Well. Outside, clothes are fairly standard, though there are still unrealistic hair colors.

* JackTheRipoff: [[spoiler: It turns out the killer in episode 4 isn't the Gravedigger as initially thought, but is copying their method in order to pin a murder on them and cover up their own involvement.]]

* {{Lobotomy}}: How the Perforator kills his victims. He also did it to himself first.

* MentalWorld: Played with. The Id-Well is a world created from particles emitted by a person with murderous intent and is a "snapshot" of their mind when they had those thoughts. Some such as [[spoiler:Narihisago's]] can be years old if the intent that produced them is strong enough. Appropriately, the objects within it represent more abstract things that the killer was thinking at the time.
* MissionControl: Momoki and his team are this. They control the Mizuhanome and observe the actions of Narihisago inside the Well to determine hints and motives as well as valuable information, which is then sent over to the investigation team to solve cases.

* OlderThanTheyLook: Hondoumachi is actually 23, but her short and young looks make Matsuoka believe that she could easily pass off as a middle schooler.

** Played With in the case of Kaeru-chan: every time a Great Detective jumps into a well, she is already dead. But as Narihisago keeps reminding himself, she is just an abstract concept that only exists within the well. The very purpose of her "existence" is to act as a murder victim, so that the Detective has a case to solve.

* RoaringRampageOfRevenge: [[spoiler:Deconstructed. Narihisago gets his revenge on The Challenger by going to his house alone gunning him down on sight. Though The Challenge was a sadistic serial killer, Narihisago is tried and imprisoned for murder.]]

* RiversOfBlood: The Challenger's ID well is a swirling sea of blood.

* SerialKillerKiller: Narihisago. Deconstructed in that the legal system still considers it to be murder.

** Oono's ID well: Kaeru's body is located in one of the apartments, having been scorched, then moved to its present location.

** Inami's ID well: Kaeru's dead body is sitting with a knife near her and there are Inami and Kazuta as they appeared when they were younger travelling in the train.

** Unnamed([[spoiler:Presumably Ayako's]]) ID well: Kaeru commit suicide by bleeding to death in a bathtub.

* SpellMyNameWithAnS: Hondomachi/Hondoumachi.

''Id:Invaded''[[note]][[AlternateCharacterReading as per the katakana on the logo saying ''Ido:Inveideddo'']], but stylised as ''ID:INVADED''[[/note]] is an original Japanese anime television series by NAZ that is directed by Ei Aoki (''LightNovel/FateZero'', ''Anime/AldnoahZero'', ''Anime/ReCreators'') and written by Ōtarō Maijō. The series premiered on January 5, 2020. A manga sequel by Yūki Kodama (the original character designer), subtitled ''#BRAKE-BROKEN'', was announced on September 4, 2019. The show's official Twitter account announced that the series is coming back on January 2021, suggesting another season.

* SelfHarm: Fukuda ''drilled a hole through his own skull''. '''''And survived'''''. It was motivated by his [[spoiler:[[SuperOCD arithmomania]]]], which it managed to cure.

* AdultFear: [[spoiler:Your only child being beaten to death by a sadistic murderer, and then watching your spouse slowly lose themselves in grief until they take their own life. Even worse, that they blame ''you'' for your child's death.]]

* AssholeVictim: [[spoiler:Narihisago's]] "victims", being serial killers themselves (see SerialKillerKiller entry below). It stands in contrast with all the serial killers we've seen so far, whose victims, for the most part, are completely innocent civilians.

* DigitalAvatar: The person who enters into the Well will change their appearance and name. So far, Narihisago (as Sakaido) changes his appearance to what he looked like in his prime, Fukuda (as Anaido) appears with having no scar and looks younger along with an elaborate trench coat outfit, [[spoiler:and Hondoumachi (as Miyo Hijiriido) who's wearing a cute-looking detective outfit.]]

* YearInsideHourOutside: [[spoiler:In episode 10, it is reveals Narihisago was trapped in Kiki's ID well for two years a while Hondomachi arrive in Kiki's Id well for 20 minutes. In the real world, he was only in Kiki's ID well for 10 minutes.]]