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''Adekan'', by Tsukiji Nao, is a [[PeriodPiece historical]] {{shoujo}} manga set in the Meiji era, featuring Yoshiwara Shiro, a sexy umbrella maker with a distinct hatred of underwear, and Yamada Kojiro, an uptight but kind-hearted police officer.

Kojiro makes it his life's goal to teach Shiro the concept of basic decency, and they become unlikely friends along the way. Nevertheless, hitches arrive in the form of gruesome murders, abductions and other strange occurrences, and Kojiro and Shiro must solve each mystery and resolve their conundrums together.

However, ''Adekan'' is especially notable for its impossibly detailed art, as well as the sheer quantity of steaming {{Fanservice}} and innuendo. It's so blatant that the series could almost be considered as a [[BoysLoveGenre BL]] on its own, though it never crosses that line.

There are currently nine volumes released in Japan.

!!''Adekan'' provides examples of:

* AnythingThatMoves: Anri, and he makes no secret of it. An extra chapter has him trying to seduce a [[spoiler: panda.]]
* AwesomeButImpractical: All of Shiro's creations; "umbrellas" plus accessories which are so flowery and wonderfully intricate... But no one in their right mind would be caught dead using them. Explains why business is so terrible most of the time.
* {{Badass}}: Kojiro and Shiro, in action and both kicking ass.
* BadassAbnormal: [[spoiler: Anri and Shiro are these, ''especially'' Shiro.]]
* BadassNormal: In contrast, Kojiro is this [[spoiler: to all appearances]].
* BerserkButton:
** For Kojiro, ''don't'' even think about harming Shiro, and vice versa.
** Kill any of [[spoiler: Shiro's girlfriends]], especially the ones he actually cares for, and he will utterly lose it, and you will die.
* BewareTheNiceOnes: Shiro is normally a surprisingly kind and decent person who is fiercely willing to help the helpless despite his awkwardness, but if you do anything to [[BerserkButton piss him off]]...
* {{Bishounen}}: Anri and Shiro, beautiful and effeminate.
* BitchInSheepsClothing: Any number of the Killers of the Week; often it's the sweetest and friendliest person who's the murderer. [[spoiler: Later in the manga, Sakura fits the male version of this trope to a T.]]
* BodySushi: Was served to Shiro on a muscular drag queen's body, resulting in much foaming at the mouth.
* BreakTheCutie:
** Kojiro's naive friend Ippei, formerly a one-shot character, is slowly being turned into emotional mincemeat over the course of the latest chapters...
** The "neko-onna" girl in the first volume comes pre-broken...as do Shiro and Anri both.
** Subverted with [[spoiler: Kusuko. Despite being incredibly sheltered all her life and then subjected to horrifying, creepy experiences, once away from her slaver father and out in the real world, with Kojiro and Shiro's encouragement and the help of some kind nuns, she seems to be surprisingly okay.]]
* ChickMagnet: Shiro and Anri, and sometimes Kojiro to an extent. The girls all swarm after them in droves. [[EvenTheGuysWantHim Even men are not immune]].
%%* {{Crossdresser}}: [[NaughtyNurseOutfit Poor Shiro]].
* CuteAndPsycho: It's hard to predict what Anri will do when he appears, but the odds are usually good that there'll either be brutal, creative bloodshed, or Anri cozying up to Shiro and toying with the oblivious Kojiro for fun and profit.
* DarkAndTroubledPast:
** Shiro and Anri have a long shared history, and not much of it was happy, judging by the flashbacks.
** Even Kojiro doesn't seem to be exempt from this, for [[spoiler:his memories have been wiped, and it seems that he's been involved with Anri and Shiro as children.]]
* DeclarationOfProtection:
** While not exactly declared or even said aloud, Kojiro wishes for nothing more than to protect Shiro.
** [[HoYay "I wish I could support Shiro-kun and protect him... If only..."]]
* DudeLooksLikeALady: Shiro is often mistaken for a woman, especially when decked out in full costume. Hell, even when he's mostly naked in a public swimming area he gets confused guys checking him out.
* EvenTheGuysWantHim:
** Proven when a man blatantly hits on Shiro, touching his face and comparing his eyes to ”dewdrops”. To be fair, Shiro was turning up the sex appeal in order to manipulate him. Turns out that [[spoiler: the man intended to capture Shiro for his beauty, planning to sell his services in prostitution.]]
** Saburouta's friend and co-worker Wakabayashi has admitted to "fucking Shiro at least fifty times" in his mind.
** Anri [[DepravedBisexual wants him back]]
* {{Fanservice}}:
** The HoYay is rampant, and there are plenty of half-naked men prancing about in suggestive positions. And that's nothing to the incredibly suggestive, elabourate, and fanservice-y CostumePorn and {{Cosplay}} that's rampant in every episode.
** In-universe, Kojiro's muscles are this for a rather enormous number of people, including a one-shot character from the first volume who reappears specifically to ogle Kojiro while awkwardly trying to work out how to confess to him.
** Anri deliberately makes himself into Walking Fanservice. From what we've seen, his reasons for doing this were [[SexSlave less than]] [[DistractedByTheSexy family-friendly]].
* GameFace: {{Bishounen}} Shiro has one. Pray you never, ever see it.
%%* GirlInABox: Quite literally.
* GodivaHair: When [[spoiler: Kusuko]] beckons to her father and asks him to [[IsThatWhatTheyreCallingItNow "learn with her"]], stark naked.
* HeroicBSOD: After burying [[spoiler: Sae]]. Shiro doesn't fly into a rage, but his [[ThousandYardStare half-insane expression]] is far scarier.
%%* HotBlooded: Kojiro.
* HiddenWeapons: Shiro, Anri, and the other members of their gang have a collection of assorted weaponry strapped on their person.
* IJustWantToBeYou: ''All'' three women of the Mermaid arc were extremely jealous of one another for various reasons, but all three hid their true feelings. It's revealed later that [[spoiler: they each planned on murdering their rival on the very same day.]]
* LovableCoward: Saburouta, although he does have his moments, especially when it's Kojiro in danger.
* MadnessMantra: ''"Onna-neko... help me... onna-neko..."''
* MonsterOfTheWeek: Or Villain/Problem Of The Chapter, as each chapter is a mini self-enclosed arc, with the main issue usually resolved before the chapter closes. Also means that there are quite a few {{One Shot Character}}s.
* NiceGuy: Kojiro is the real deal. He's uniformly kind to and likes women (he tells an aging actress how beautiful she is, and comments on seeing a group of ladies of...varying looks that he finds all of them attractive in different ways), is a good and supportive brother to his dorky siblings, takes his job as a cop incredibly seriously, can't stand to see injustice done, and works hard to befriend Shiro and teach him the "proper" way to live. No wonder Shiro cares for him so much.
* {{Nosebleed}}: Kojiro gets this in Chapter 31 while watching Shiro being suckered into feminine, sexy cosplays. He's mostly irritated that Shiro was naive enough to believe in Wakabayashi's scheme of getting him in them, but at the same time, it elicits a perverted reaction out of him.
* NotWhatItLooksLike: In the very first chapter. Kojiro walks into Shiro's house to see a woman bending over him whilst he is ''stark naked''. Turns out that she was just covering him up.
* OnlySaneMan: Anri's subordinate Shinzo, who is deeply faithful to him but immune to his over the top antics and come-ons. Kojiro can also be this for the good guys...[[KindHeartedCatLover unless cats are involved.]]
* OverprotectiveDad: Kusuko's father would do anything for her. He would even lock her inside a box for the entirety of her life, just to shield her from outside influences. [[spoiler: This backfires on him ''horrifically'' and he snaps.]]
* {{Pixellation}}: ”Accidents” happen, but we are spared a view of Shiro's crotch by a slapped-on "18+" and pile of pixels.
* PleasePutSomeClothesOn: Kojiro to Shiro, though less and less as the manga progresses.
* RunningGag:
** Kojiro trying to wrestle Shiro into some damn underwear (and, half the time, trying to feed him at well).
** Kojiro loves cats. Cats don't love Kojiro.
** The coppersmith's young daughter makes a few reappearances in omake and later chapters. Each time, she wants to confess to Kojiro but winds up [[DistractedByTheSexy compromised by his muscles.]]
* SceneryPorn: Tsukiji Nao, like Shiro, loves to add a ''ridiculous'' amount of detail to her work.
* ShoutOut: Saburouta's distinctive hairstyle is a homage to Goku from ''Anime/DragonBallZ''.
* SuperDeformed: Many chibis in the funny scenes.
* TallDarkAndHandsome: Both Shiro and Kojiro could qualify as this.
* VillainousBreakdown: Happens all too often as the antagonists of each arc dramatically break down and confess their motives.
* WouldHurtAChild: One woman would murder babies for money and love.
* {{Yandere}}: Anri flip-flops between this and CuteButPsycho. [[spoiler: Sakura, on the other hand, turns out to be a cut-glass example to his "big brother".]]
* YaoiFangirl:
** Kojiro's little sister Aguri is implied to be one, frequently catching Kojiro and Shiro in compromising positions and laughing when Kojiro stutters in embarrassment and denies it.
** While Aguri mainly seems amused by her big brother's antics. Wakabayashi's older sister, on the other hand, is a full-blown fujoshi who disguises herself as a fortune teller and recommends ''lotion sumo'' as a solution to the main male characters' personal problems in a side story.
* YoungerThanTheyLook: The characters are drawn with very mature appearances and already have full time jobs, making readers assume they're in their twenties, but most are still in their teens; such as Shiro is only 16, Kojiro is 17, and Anri is 18.