There are many, many ways Yasuko Kobayashi defies the expectations of the genres and franchises she works on. Here are just a few examples.

[-Note: The lists below are based on assumptions made through observing her various works.-]

!!YasukoKobayashi's generally-favoured writing techniques:

* Kobayashi doesn't seem to like playing a trope straight, ''especially'' if it's related to an important point in the story. When she's the lead writer, there ''can'' and '''will''' be subversions, plays, double-subversions, aversions and pretty much anything under the "PlayingWith" category, in any possible order and combination that fits the situation. Once you've become familiar with her works, it makes you wonder if she has something against trope "norms" and clichés...
* "ShowDontTell" is the mantra. It ''will'' be a main element in her stories. She won't tell you anything outright, and instead convey through hints, dialogues and character emotions.
* Kobayashi will have multiple plot threads going on, but she'll focus mainly on two - one main and one background, going on at the same time.
* ''Lots'' of characterization: definition, exploration, development,... This is especially prevalent in her Tokusatsu works, which turn out to be more than just Battle-of-the-Week routines.
* In a FiveManBand, characters are almost guaranteed to be of different backgrounds and philosophies. Don't expect them to get along immediately; that's always for CharacterDevelopment.
** Especially evident in Timeranger and Shinkenger. In fact, Shinkenger makes the band not knowing each other a rather vital part of the series, as each of the Samurai Sentai's number have their own issues and secrets. Making them unknowns to each other to start, and even putting a gulf of seperation in time between the two that are childhood friends, allows us to discover the characters as they do, bit by bit.
** In fact, Kobayashi could be said to practice Jigsaw Characterization along with her plotting.
** Majorly Subverted with Toqger.
* Major villains, especially ones portrayed in a sympathetic light, can turn out to be {{Well Intentioned Extremist}}s.
* If [[TheHero the main character of the story]] is a male, he, more likely than not, would end up as a NiceGuy.
** [[Series/KamenRiderRyuki Shinji Kido]], [[Series/MiraiSentaiTimeranger Tatsuya Asami]], [[Series/KamenRiderDenO Ryotaro Nogami]], [[{{Blassreiter}} Joseph Jobson]], [[Series/SamuraiSentaiShinkenger Takeru Shiba]] [[note]]Notably, though, he started with a JerkassFacade, instead of directly as a NiceGuy. He [[DefrostingIceQueen warmed up]] quite soon after.[[/note]], [[Series/KamenRiderOOO Eiji Hino]], [[Series/TokumeiSentaiGoBusters Hiromu Sakurada, Ryuji Iwasaki]], and [[Series/ResshaSentaiTokkyuger Right]] all fit the bill.
* Hints of a BittersweetEnding in varying amounts, depending on the series. Even if the ending is mostly optimistic, there'll most likely be at least a sad subtext in the whole series' context.
** As seen in the endings to [[spoiler: ''Ryuki'', ''Timeranger'', ''Den-O'', ''Blassreiter'', ''Shinkenger'', ''OOO'', and ''Go-Busters'']].
** Surprisingly, this seems to be subverted with [[spoiler:''Tokkyuger's'' ending]].
* The majority of her earlier works have been DarkerAndEdgier, but it's not generally a guarantee; with Den-O, Shinkenger, and most recently Tokkyuger, she's also proved that she can handle humor rather well. This doesn't seem to apply to her Anime works so far though.
* As a rough rule, don't expect regular romance in her stories. If there's one, she's already plotting something to do with it...
** On the other hand, she doesn't seem to mind throwing some ShipTease now and then, when it fits the atmosphere.
* May have some IWorkAlone tendencies as the lead writer; this is especially notable if you look at the episode credit tables for each series on Wikipedia Japan. The plus side is that this gives the stories very fluent consistency.
** One astonishing instance is with ''Shinkenger'', where out of 49 episodes, only ''7'' of them are written by sub-writers, all side episodes. Meaning? She wrote the other 42 ''singlehandedly''[[note]]And probably literally, too.[[/note]].
** It still doesn't beat ''Den-O'', though; [[spoiler:45]] out of 49?!? ...Damn.
*** It does beat out ''Den-O'' when you include the four episodes of ''KamenRiderDecade'' that she wrote, as it aired concurrently with ''Shinkenger''. This included Decade's two-episode crossover with ''Den-O'' as well as its crossover with ''Shinkenger''
** However, even Den-O doesn't beat Kobayashi's work on ''Series/PrettyGuardianSailorMoon'', where she wrote every single episode and both of its specials.
** ''Series/KamenRiderOOO'': 38 out of 48. Fewer than other series she wrote, but she still took care of most of the plot-important episodes.
* "[[TheyChangedItNowItSucks She Changed It, Now It Sucks/Rocks]]", and VERY much so. Due to her habit of throwing in elements and concepts never/rarely used before, the audience's initial reception of her stories tend to range from lukewarm to cold. But for the very least, it's safe to say that her works are quite popular in Japan.
** The most triumphant example: When ''Series/KamenRiderRyuki'' aired, the massive load of liberties she took [[strike:pretty much]] almost derailed it from being a standard Franchise/KamenRider title, and this threatened the show's ratings for a while, almost to the brink of cancellation. But the audience slowly became engrossed in the storyline after the hungover passed. And indeed, the following Heisei Franchise/KamenRider stories having a variety different concepts and formulas can be partially attributed to her breaking down the barriers - perhaps in conjunction with ''Agito''.
*** And then, in an interview while she was working on ''Ryuki'', she says she's never seen a ''Franchise/KamenRider'' series before...
* Not to say Kobayashi doesn't have a few favored themes and Aesops. While her protagonists often must deal with the fact that there are things beyond their control, the reccuring answer is that they decide how to deal with it -- she's a big fan of EarnYourHappyEnding. Even when it's really [[BittersweetEnding Earn Your Bittersweet Ending]].
* '''{{Jigsaw Puzzle Plot}}s.''' She ''always'' goes extra lengths to set up intricate stories, split them up into tiny little bits, shuffle them thoroughly and drops piece by piece in front of the viewer one at a time. And ''really'' darn good at it.
** ''Series/KamenRiderRyuki'' is a prime contender among [[strike:her Tokusatsu works]] all Heisei ''Kamen Rider'' series.
*** ''Series/KamenRiderOOO'' followed the same path from #1 in its own unique ways.
** All 3 of her Anime works. Period.
* Tends to pick [[NiceGuy Nice Characters]] as leads; so far, pretty much every main character she created herself.
** In fact, her most common trope is to put such a sweet/nice character in adverse situations that they almost don't deserve, and have them overcome it over the story's course. As long as they don't run into a BittersweetEnding.
* She's among the few Tokusatsu writers that can weave all the merchandises into their source series while ''averting'' blatant advertising, as well as assigning them appropriate significance in the series. Yes, she can ''dignify'' merchandises in-series.
** ''Series/KamenRiderOOO'': Oh dear... where can we begin? Vending machines that can turn into [[CoolBike motorcycles]], soda cans that turn into [[RobotBuddy robots]], singing [[TransformationTrinket transformation belts]]... Yet the series is far from being ridiculous. Even the in-show ProductPlacement of [=iPhones=] and [=iPads=] works in this sense.
* She also has a tendency to weave technically accurate scientific conventions into her stories when they're required. ''Timeranger'' follows a quantum mechanics model in its usage of time travel, while ''Den-O'' makes extensive use of real theories about singularities.
* There's a high probability that at least one major character will be suffering from [[YourDaysAreNumbered a fatal, usually incurable illness]]. This illness [[SoapOperaDisease will not impede their daily life or heroics in any way]], except during plot-appropriate moments. However, true to the severity of such a illness, their condition will form a vast proportion of that character's motivations and outlook on life.
* Most of the villains in her works have pretty human goals in like from [[Series/MiraiSentaiTimeranger cheating]] [[Series/KamenRiderRyuki death]] to [[Series/KamenRiderOOO feeling]] [[Series/KamenRiderDenO "complete"]].
** On the flip side, the only kind of downright villains in Yasuko's works are {{Omnicidal Maniac}}s.

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Looking deeper at some of her works:

!! Series/KamenRiderRyuki

Taking the most basic assumptions about Franchise/{{Kamen Rider}}s: Riders are allies of justice? Not in Ryuki. Instead, we get 13 Riders (there hadn't been more than [[Series/KamenRiderAgito 3 Riders]] in a series before this). And they're less concerned with justice and more with an Elimination Battle Royale against each other. And the candidates in the Rider war are hardly typical Riders. We have:
* A WideEyedIdealist -- more so than any prior Rider, even Series/KamenRiderKuuga. And here, while hope may win the day in many Rider series, The WideEyedIdealist routine is [[strike:subverted to hell]] [[DeconstructedTrope brutally pulverzied]] to the point that ''the main character himself'' begins to doubt whether his beliefs are wrong after all. [[spoiler:The irony is that in the very end, in the finale, his ideals [[ReconstructedTrope come full-circle back to where they started]].]]
* A BloodKnight
* An AmoralAttorney-- though he turned out to be [[AntiVillain actually nicer than he looks]].
* An '''OmnicidalManiac''' BloodKnight
* [[CorruptCop And]] [[JerkAss the]] [[ApologeticAttacker others]] [[ChronicBackstabbingDisorder are of]] [[GoldDigger even]] ''[[EvilTwin more]]'' [[ManipulativeBastard dubious]] [[{{Brainwashed}} morals]] [[WellIntentionedExtremist and/or]] [[BigBad sanity]].

!! Series/KamenRiderDenO

Who says Riders need to be tough, manly men? Here, we have the most softspoken and innocent pushover of a lad with the worst fortune in the world as the main Rider. As well, after several seasons of dead serious Franchise/KamenRider shows, in Den-O we have ''lots'' of humor-- so much so some fans on both sides of the Pacific were left kind of off balance.

The source of Rider powers have been mostly from science, and a few from mysticism. Here, we have DemonicPossession. Featuring [[ABoyAndHisX a boy and his five time-traveling demons]].

And while she's at it in that recurring theme of Kobayashi's on dealing with what you can control and accepting what you can't, she manages to take a hammer to YouCantFightFate ''and'' ScrewDestiny.

!! Series/SamuraiSentaiShinkenger
Franchise/SuperSentai has been highly theatrical ever since its beginnings. Here, we see that turned UpToEleven as Kobayashi marries Sentai to JidaiGeki. It is a very happy marriage, and you even see the influence of Kabuki as implied by one of the character's backgrounds.

Kobayashi also gets her favorite theme of earning things in adversity in early-- the members of the Shinkenger are at varying degrees of skill and bring vastly different attitudes to that training. This leads, more often than not, to that oh so prized clash of personalities she mines to bring out the rich characterization she's known for.

Something that was a major theme in Den-O becomes even more important here-- the concept of TrueCompanions. Who are you loyal to? Why? What makes you worth the loyalty others give you? What's the difference between duty and friendship? All these questions are considered over the course of the series, and the climax throws them into stark focus.
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