[[quoteright:227:http://static.tvtropes.org/pmwiki/pub/images/kiri_and_elraine_8108.jpg]]

The world has been decimated by a mysterious plague. There is no permanent cure. Only those resistant to it, called "Sisters", can treat it by absorbing the toxins created by the disease. They may save the person, but this shortens their lifespan drastically -- once they absorb a certain amount, they die.

The story follows one of these Sisters, Elraine, who is coming to the end of her 'career'. After treating a patient, she is hit with the final, terminal stage of the disease and collapses in an alleyway. Just before she hits the ground, she's caught by a mysterious boy... and the symptoms cease. She's still alive. Once he lets go of her hand, though, it starts up again. What is this boy's power?

It turns out that this boy, Kili, is the one her organization have been looking for -- a truly immune person from which they can derive a cure. Until they reach the headquarters, though, she has to keep a hold of his hand ''no matter what''. Standing in the way of this is their inherent embarrassment at having to do everything together (showering, sleeping, going to the toilet, eating). Oh, and the order of assassins that is targeting Sisters...

A fun series that was tragically CutShort after laying down the foundations of its main arc plot. What made its cancellation so heartbreaking was the amount of foreshadowing set up and LeftHanging. The {{mangaka}} would go on to write ''Manga/{{Nisekoi}}''.
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!!Trope examples
* TheAce: Kili Luchile displays some of the CommonMarySueTraits (superlative art skills and accompanying dexterity, red eyes, [[TheGift unique and mysterious powers]]) and seems to be a MartyStu-in-training, but he also displays some humanising character flaws -- most notably [[spoiler:DoggedNiceGuy]].
** Also, his artistic and creative senses ''suck''.
* AllYourPowersCombined: Kili's "Flare" power increases the strength of all the people he's in contact with, by the ''number'' of people he's in contact with. 2 people = 2 people with double strength, 10 people = 10 with 10 times the strength and so on. The [[GameBreaker 'something for nothing']] nature of this is {{Lampshaded}} later on.
* AnimeHair: Kili.
* AlwaysFemale: The Sisters and their organization.
** Complete with an AmazonBrigade for their protection.
* TheAtoner: [[spoiler:Sister Heine]], who showed up too late to save a dying patient, ''once'', and was so stricken with guilt that [[spoiler:she gave up her artistic hobbies and became totally dedicated to Sistering herself into an early grave.]] She even ignores the advice of an older Sister, who recommends that she retire. Justified, in that [[spoiler:her own family died because of a Sister who was too late.]]
* BattleAura: Just once, when the latest "worst ever" villain is gauging Fallan's strength.
* BattleCouple: Elraine and Kili, but not through romantic feelings. [[spoiler:At least not initially.]]
* BettyAndVeronica: Subverted, and [[CrowningMomentOfFunny with great flair]].
** When [[EeriePaleSkinnedBrunette dark-haired]], [[BareYourMidriff midriff-baring]] [[ActionGirl Sui]] appears on the scene, shy Ellie immediately assumes she must be Kili's girlfriend--and Kili and Sui instantly [[HeroicBSOD flinch]] and [[WithFriendsLikeThese burst out laughing]], respectively. Turns out they've ''already'' given the dating thing a try ([[ReallyGetsAround or three]]) and it was a disaster, killing the possibility of a love triangle deader than dead from the get-go.
* BlessedWithSuck: Elraine can use her HealingHands to absorb Troi from her patients, but it increases her chances of succumbing to seizures and doesn't get rid of the Troi from the victims completely.
* BloodKnight: Sui just [[AxeCrazy loooooves to fight]], is obsessed with finding the strongest, and looks and acts like a cross between [[VideoGame/FinalFantasyVII Tifa]] and [[Manga/{{Bleach}} Kenpachi]]. Except for [[spoiler:when she's completely owned by Fallan -- then she bursts out crying. * sniff* "I'm gwonna kill him! Boo hoo!"]]. "It's like she's [[CryCute really cute]] but scary at the same time!"
* CanNotSpitItOut: Kili and Elle, turned [[UpToEleven up to eleven]]. Towards the end of the series, it finally dawns on Elle [[spoiler:that she might be falling in love with Kili]]. She proceeds to [[spoiler:make the most pitifully awkward confession ever, mostly along the lines of ''I know you probably don't know what I'm talking about, but if we ever, you know, then you know, I might... yeah.'']] Good job, sweetie.
** And Kili's reaction is to stand there, trying to play it clueless while [[spoiler:dying of frustration. Apparently he's been in love with her literally [[LoveAtFirstSight since he first laid eyes on her]], but is determined to keep quiet about it to defray the inevitable potential for awkwardness.]]
* CantLiveWithoutYou: Elraine can't live without touching Kiri.
* CastFromLifespan: The Sisters' healing powers, indirectly but with the exact same effect as the standard form of the trope.
* ChainsOfLove: Part of the premise. In a twist, there's nothing physical keeping them together, just a magical problem counteracted by Kili. If Kili really wanted to, he could leave at any time, but then Elraine would die and Kili's just too nice to let that happen.
** They ''do'' tie their hands together when they go to sleep, but that's completely voluntary and prevents accidental separation and death.
* TheChosenOne: Kili.
* CryCute
* CutShort
* DanceBattler: Elraine and Kili's "[[TitleDrop Double Arts]]" are based on dancing moves.
* DebutQueue
* DotingParent: The Luchiles. They [[IWantGrandkids extend their affection freely]] to [[HeartwarmingOrphan Ellie]], as well.
* DynamicEntry
* EmbarrassingNickname: Elraine is known as "White Fairy" worldwide by all the sisters, to her dismay.
* FanGirl: Elraine meets a Sister who says she's her personal hero.
* [[FiveRaces Four Races]]: Unfortunately, it never elaborated on the last two.
** Beigers are the best at constructing and designing buildings and crafts.
* {{Foreshadowing}}
* GentleGiant: Kiri's father, who terrifies Elraine at first glance and proceeds to quietly and completely reverse the impression with his soft-spoken, friendly ways.
* HardDrinkingPartyGirl: Tisera Gordon.
* HealingHands: The Sisters. Also [[spoiler: Kiri combines this with his being TheImmune, enabling him to stave off Elraine's death by physically keeping hold of her at all times.]]
* HeroSecretService
* HoldingHands
** IntertwinedFingers: Following the completion of titular Double Arts, since it's based on dancing moves.
* HotterAndSexier[=/=]{{Stripperiffic}}: DefiedTrope, among others. Specifically, only Sui had rather revealing clothes, but she's a pure brawler. And {{Stripperiffic}} as sister Elraine pushed her [[http://www.mangafox.com/manga/double_arts/v02/c020/11.html limit of embarrassment]], she dressed like average [[http://www.mangafox.com/manga/double_arts/v02/c020/13.html casual street dancer]]!
** [[LampshadeHanging Lampshaded]] by [[CynicalMentor Fallan]], outfit that revealing as much skin as possible [[FragileSpeedster would be the best battle gear for speed-focused fighter]].
*** [[HypocriticalHumor And Fallan is a fighter dressed in a semi-formal attire]].
**** Well, Fallan doesn't need to keep his skin accessible to Kili at all times. The point was that, if they were separated in a fight, Kili needed to be able to get in contact with El again ASAP, without wasting time flailing to find a bare patch.
* HugeGuyTinyGirl: Kili's mother -- shorter than he is. Kili's father -- has to duck under ceiling beams.
* IHaveTheHighGround
* TheImmune: Kili, and, to a much lesser degree, the Sisters.
* ImprobableWeaponUser: Sui uses a folding hula hoop that's made of solid iron. And can also [[WallJump run along walls whilst she's crouching inside it]].
* IndyPloy: Kili's first anti-Gazelle strategy was a textbook example, with a nice jaunty lampshade to boot.
-->'''Kili:''' Well, I was confident it would work, but I was mostly just going with the flow...
-->'''Elraine:''' The ''flow!?'' But you said you were sure!
-->'''Kili:''' Right, because that made you agree to do it! Anyway, nothing bad happened, so I guess it's okay...
-->'''Elraine:''' No, it's ''not'' okay!
* IShouldWriteABookAboutThis: Elraine certainly did.
* KnifeNut
* LastMinuteHookup: Probably due to being cancelled rather than laziness or an inability to handle it, though.
** Although they ''still'' don't quiiite manage to actually hook up, making them possibly the only couple in the history of manga to be SickeninglySweethearts, who CanNotSpitItOut, ''at the same time''.
* LoveAtFirstSight: [[spoiler: Kili.]] His reactions while [[spoiler: Elraine]] is trying to explain, weeks later, that she might, sort of, maybe, kind of have been falling a little bit in love with him for a while now are priceless.
* MagicAIsMagicA: A possible mistake: [[spoiler:a Sister in a seizure should die regardless if another Sister healed her or not, because it said in the first chapter that the Sisters can't reverse Troi once the seizures start. The damage has already been done.]]
** Kili can stop seizures though, and [[spoiler:since he was holding Heine's hand while El healed, the combination might have been able to do what El couldn't have done alone. Also, his Flare power could have amplified Elraine's, allowing her to save Heine.]]
* MartyrWithoutACause: [[spoiler:Sister Heine,]] to the point where she's almost a DeathSeeker. And she does it all [[TheWoobie with a cheery smile]].
* MartyrdomCulture: The Sisters, to the point where it freaks Kili out miserably at times. His impassioned rants about this to Elraine have started to draw her back to a more healthy worldview, thank goodness.
* MeetCute: Kili's mother and father, as shown in a side comic; as sweet young things attempting to enroll at a school for tailors, they over- and under-estimated what a "normal" garment size should be and ended up constructing sample garments too big and small to fit anyone but each other. "Excuse me, but would you like this...?"
* MartialArtsAndCrafts: The titular Double Art is a martial arts style made exclusively for El and Kili, but the series ends before the style could progress past the two [[spoiler:just dancing.]]
* MyKungFuIsStrongerThanYours
* NoBodyLeftBehind: When someone dies from the plague,they merely [[EverythingFades turn invisible and disappear]].
* PowerTrio
* ProudWarriorRaceGuy: Sui again.
* RapunzelHair: Sui, once more. She doesn't take it well when a Gazelle assassin cuts off a few pieces of it.
* ReallyGetsAround: Though she didn't get up to anything sexual, Sui has dated every guy in her town. [[BloodKnight Just so she could fight them.]] She's dated (and dumped) Kili three times, which is a sore spot for him.
** According to an official {{omake}}, she did this within the span of three consecutive days, traumatizing poor Kili's heart to the point where he "swore off love" at the age of fourteen.
** Complete with a hilarious gender inversion of the stereotypical jilted-woman sulk, as Kili works out his sorrows at the sewing machine.
* RightBehindMe: An interesting variation involving an intercom-style telephone and the subject overhearing, then interjecting.
* ShapeshiftingExcludesClothing: Whenever someone dies of Troy. First, the seizures, then they become transparent and disappear.
* SheIsNotMyGirlfriend: Happens a lot. Elraine's the only one who says it, though.
* ShoutOut: Not confirmed or anything, but Kili has a bust of what ''looks'' like Andre the Giant in the role of [[Film/ThePrincessBride Fezzik]]. [[http://www.mangafox.com/manga/double_arts/v01/c003/5.html Judge for yourselves, panel 1.]]
* ShroudedInMyth: Fallan Denzell.
* SillyRabbitRomanceIsForKids: [[spoiler: Sui]] drove [[spoiler: Kili]] to this. He got better, though. [[spoiler: Thanks, Elraine. Took you all of 0.02 seconds, too.]]
* SticksToTheBack: Sui's hoop.
* TerribleArtist: Kili is by means good at crafts but his artistic taste leaves very much to be desired. Averted with El, who actually turns out to be a terrific artist.
* TrademarkFavoriteFood: Sui and cherries.
* {{Troperiffic}}: For its meager length, the creator managed to pull it off. A spiky-haired blond boy with mysterious powers, and only he can save the world! His childhood friend likes to fight! The OfficialCouple must learn to get along! They must get stronger!
* TwiceShy
* WaxOnWaxOff: Kili and El are quite bemused during the early stages of their training...
* WorldsStrongestMan: Fallan, also an ArrogantKungFuGuy.
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