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Toshiki Inoue was born in Saitama, Japan in 1959. He's the son of the man who wrote the script for the original ''Series/KamenRider'', Masaru Igami. He is well known for writing anime and Tokusatsu. He gained some bad reputation among the fandom from being part of [[ExecutiveMeddling executive-mandated retool]] of ''Series/KamenRiderHibiki''.

No relation to Masahiro Inoue, the actor who portrayed Tsukasa Kadoya in ''Series/KamenRiderDecade''.

Compare with Creator/FrankMiller for a similar writer who does DarkerAndEdgier takes on established properties.
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!!His involvement in certain works include:
* ''Series/AvataroSentaiDonbrothers'' (every episode except [[ClipShow Don 26]])
* ''Series/ChoujinSentaiJetman''
* ''Series/CutieHoneyTheLive''
* ''Manga/DeathNote''
* ''Despair Memory Franchise/{{Gundam}} Sequel''
* ''Anime/DevilMayCryTheAnimatedSeries''
* ''Anime/DragonBall''
* ''Anime/FullmetalAlchemist2003''
* ''Anime/GalaxyAngel''
* ''Anime/GaroCrimsonMoon'' (with Creator/ShoAikawa)
* ''Series/KamenRiderKuuga'' episodes 28, 32, and 33 (the last one was co-written with Naruhisa Arakawa)
* ''Series/KamenRiderAgito'' every episode except for 28, as well as TheMovie)
* ''Series/KamenRiderRyuki'' episodes 7-10, 15, 16, 24, 25, 29, 30, 41-44, as well as TheMovie)
* ''Series/KamenRider555'' every episode as well as TheMovie
* ''Series/KamenRiderBlade'' episodes 17, 18, 29, 30, 43, and 44, as well as TheMovie ''Missing Ace'')
* ''Series/KamenRiderHibiki'' episode 30 onwards (except 38 and 39), as well as TheMovie
* ''Series/KamenRiderKabuto'' episodes 11, 12, 15-20, and 39
* ''Series/KamenRiderKiva'' every episode except 17 and 18
* ''Series/KamenRiderDecade'' episodes 20-23
* ''Series/KamenRiderZiO'' episodes [[Recap/KamenRiderZiOEp352008FirstLoveWakeUp 35]] and [[Recap/KamenRiderZiOEp362019FirstLoveFinally 36]] (which were tributes to ''Kiva'')
* ''Manga/KarakuriCircus''
* ''Series/ShougekiGouraigan''
* ''Manga/SwordGai''
* ''Anime/{{Symphogear}} XDU'' (guest writer for the ''Another Testament'' event, which is a crossover with ''Series/KamenRider555'')
* ''Manga/UshioAndTora''
* ''Anime/YuGiOhFirstAnimeSeries'' (where he and Creator/YasukoKobayashi first worked together)

!!Tropes associated with his writing style:
* AnyoneCanDie: In some cases.
* ConflictBall: Part of the SignatureStyle, as it mostly runs off of PoorCommunicationKills.
* CreatorThumbprint: Aside from his love of miscommunication drama (and their superhero counterpart, the SecretIdentity-based shenanigans), the most bizarrely recurring part of his writing is that in damn near every show he writes, someone gets kicked off a bridge during a fight, falls into a body of water, and drifts away. It's weirdly specific, and yet it just ''keeps happening''.
* DarkerAndEdgier: He sure likes his grit. When watching one of his series, you should expect lots of angsting, heavy arguments between characters and at least one character dying.
* DenserAndWackier: Along with the DarkerAndEdgier aspects, his writing also tends to be over-the-top and wild, including the heavy argument part in the characters, like the episodes he wrote for ''Series/ChourikiSentaiOhranger'', episode 29-30 of ''Series/KamenRiderRyuki'', and ''Series/AvataroSentaiDonbrothers''.
* DisposableWoman: Likes to kill off female characters just to give the male heroes motivation to fight the villains, or something to angst about.
* {{Fanservice}}: He often has female characters placed in this. According to him, after ''Jetman'' ended, he wrote several that go a lot more into the romantic part about it. As a side effect of keeping it a kid's show, he replaced romantic undertones with plenty of eating.
* FantasticRacism: Most of the enemy races in series written by him look down on humanity. They believe their superiority over humans gives them the right to rule over or exterminate them.
* FoeRomanticSubtext: In his two series ''Series/KamenRider555'' and ''Series/AvataroSentaiDonbrothers'', there are two similar pairs of foes that have LikesClarkKentHatesSuperman going on, but even after their identities are revealed to the other, they still have a lot of HoYay with each other. They are [[spoiler: Takumi and Yuji & Taro and Sonoi]].
* GreyAndGreyMorality: His most distinctive writing feature is that he dislikes the idea of conventional good-and-evil heroism, so he likes creating dark hero characters and different shades of morality. That said, he's not shy about making HateSink villains either.
* LoveDodecahedron: Inoue is quite fond of writing numerous love triangles into his series and wringing as much romantic drama out of them as possible.
* {{Melodrama}}: A majority of his stories center around lost loves, whether they be romantic or familial, and people's inability to deal with their grief, often in over-the-top and excessively dramatic ways.
* PoorCommunicationKills: [[SignatureStyle Boy howdy, does it ever]]. In many cases, the problems characters face in his works would be solved if they would just sit down and talk about it for a few minutes.
** He self-parodies his tendency in ''Donbrothers'' by intentionally exaggerating it to the point of absurdity -- for one thing, the team doesn't learn who ''their own Black Ranger'' is and vice-versa until just ''six'' episodes before the end of a fifty-episode run.
** Of course, that doesn't mean there aren't subversions. One instance was used in three different ''Kamen Rider'' seasons and in ''Donbrothers''. Long story short, [[spoiler:it involves LikesClarkKentHatesSuperman, but once they find out they're the same, [[SecretIdentityApathy they start liking both]].]]
** He mentioned enjoying watching ''Anime/{{Symphogear}}'' (in preparation for writing the collaboration event between it and ''555''), where one of the major themes of the show is miscommunication.
* SacrificialLamb / SacrificialLion: Introduces characters just to kill them off. Most of these are female, tying them to the DisposableWoman trope.
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