Line #3 Manga/HekikaiNoAion


1	[[quoteright:230:https://static.tvtropes.org/pmwiki/pub/images/230px-Aion_manga_vol_1_cover_1099.jpg]]
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3	Tatsuya Tsugawa's parents die in an accident. One week after the accident, he has inherited millions of yen and is now starting high school. He tries to follow his father's last words about being a man of high caliber. A little while later, Tatsuya tries to rescue a girl, Seine Miyazaki, from being bullied. She coldly rebuffs his attempt and claims that she likes being bullied. He still tries to help her despite the fact she told him to leave her alone. It turns out that Seine is immortal, and she kills parasitic bugs that control humans with a snake named Aion that devours them.
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5	''Hekikai no [=AiON=]'' is a fantasy and horror manga by Creator/YunaKagesaki, who is also known for ''Manga/SakuraNoIchiban'' and ''Manga/{{Karin}}''. The series was serialized in ''Dragon Age'' from 2008 to 2012, with 11 volumes. Three volumes of the series were translated in English by {{Creator/Tokyopop}} under the name ''Aion'' before it eventually closed its North American publishing division.
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7	Not to be confused with the game ''VideoGame/{{Aion}}''.
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9	----
10	!!Tropes this series provides are:
11	* AccidentalPervert: Minagi accidentally walks into a naked Seine in the bathroom and freaks out because she was unaware that Tatsuya brought a stranger into the house.
12	* AdventuresInComaland: Tatsuya went into [[spoiler:Seine's]] induced dream in order to wake her up.
13	%%* AllJustADream: according to Shizuki in a ,somehow, spooky way.
14	* AllLoveIsUnrequited: Nagisa is in love with Tatsuya who is in love with Seine who is in love with [[ParentalSubstitute Simon]].
15	%% * ArtEvolution: Compare the first chapters with the later chapters
16	* BabiesEverAfter: At the end, Croquet had three puppies. [[spoiler:..and one inherited Chibi Piyo Piyo's powers [[MixAndMatchCritter and wings!]]]]
17	* BarbieDollAnatomy: The mermaids spend a lot of time topless, but even without their [[GodivaHair hair covering their breasts]], there's only a vague outline of detail at best.
18	%% Administrivia/ZeroContextExample * BeachEpisode: It gives us a great reveal...
19	* BecauseYouWereNiceToMe:
20	** Sheila[[spoiler:, one of the [[OurMermaidsAreDifferent evil mermaids]],]] fell for Tatsuya because he was the only one aside from Ariel to show her kindness. [[spoiler:Also, because she was afraid to lose him, she stopped thinking about avenging herself against Seine, the one who left her without a voice and "killed" her.]]
21	** Our protagonist Seine as well. She decided to go with Simon, a man she knew absolutely nothing about, just because he was nicer to her than her abusive foster father.
22	* BettyAndVeronica:
23	** Played straight with Yoshiyuki as the UnluckyChildhoodFriend Betty and Seine as the cold ActionGirl Veronica.
24	** Then played with; ShrinkingViolet but exotic mermaid and human but BrokenBird witch. Though Tatsuya shows more attraction to Seine, he still can’t leave Sheila alone when she's in trouble.
25	* BigBad: Ariel, the eldest of [[OurMermaidsAreDifferent seven mermaid sisters]], who periodically destroy major cities (usually by [[GiantWallOfWateryDoom tsunami]]) to collect humans' [[LifeEnergy psyche]]. And in the later parts of the story, [[spoiler: Demiurge]].
26	%%* TheBigDamnKiss:
27	%%** [[spoiler: Tatsuya to Seine in chapter 39]]. Also counts as ForcefulKiss.
28	%%** Also, [[spoiler: Seine to Tatsuya]] at the end of chapter 39, beginning of chapter 40; {{Subverted}} because it was just to [[spoiler: take a Mushi out of him]].
29	%%** And before of all that, [[spoiler: Sheila to Tatsuya]] at the end of chapter 38.
30	%%* BigFancyHouse: Tatsuya's house.
31	* BittersweetEnding: [[spoiler:Tatsuya and Seine get the chance to have a RelationshipUpgrade, the town is saved from being sunk, Enati's threat is avoided and Sheila gets to have a genuine mermaid lower body but has to sacrifice her human legs; Seine gets to kill 2 of seven mermaids, after hearing Simon's history through Ariel, and seems to give up her revenge. After many years, Tatsuya dies of old age and Seine is seen beside his grave, just as young as always]].[[spoiler:But then, Tatsuya's soul seems to come for Seine, and she gives up Aion. Both are TogetherInDeath and Aion returns to its true owner, Sheila, returning her voice.]] This makes the end a little more sweet but still a TearJerker.
32	%%* BloodSplatteredWeddingDress: Not a wedding dress but a kimono; still the same impact
33	* BoundAndGagged: Minagi gets bound and gagged by her parents (who were possessed by mushi) because she overheard them talking about killing Seine.
34	* BrainwashedAndCrazy: All the victims of the mushis lose all rational thought when they take a look at Seine's face.
35	* BreatherEpisode: Chapter 28. It's even called "Renewing Moods"
36	* CardboardBoxHome: Seine lives in a cardboard box since she's ReallySevenHundredYearsOld and has no family. Even after Tatsuya takes her home, she still insists on sleeping inside her beloved cardboard box.
37	%%* ChekhovsGun: Croquet eating Chibi Piyo-piyo.
38	%%* ClothingDamage: Deconstructed with [[{{Gorn}} all the wounds Seine got]]
39	%%* ComedicLolicon: Yuzuki is acknowledged as this, PlayedForLaughs and LesYay, of course.
40	* CrossOver: With ''Manga/{{Karin}}''.
41	* CruelToBeKind: Seine must force the Mushi's host to hate and kill her so she can rip out the Mushi.
42	--> '''Seine:''' It's fine like this. She should hate me more. If she does, I can save her quickly.
43	* CycleOfRevenge: Seine, looking to avenge Simon, kills a mermaid in an OffWithHerHead way; later that same mermaid comes [[BackFromTheDead back from the dead]] looking for revenge, starting the cycle all over again.
44	* EnforcedColdWar: [[spoiler: Tatsuya forced Seine and Sheila to live under the same roof when Sheila left the sea]]. No wonder why he ended up being punched in the face.
45	* EveryoneCanSeeIt: Well...everyone but [[ObliviousToLove Tatsuya]] can see that Yoshiyuki is in love with him. He's just that dense.
46	%%* FaceFault: Minato had this in chapter 9.
47	* FanserviceWithASmile: PlayedForLaughs, since all the boys dress in {{Meido}} costumes. Tatsuya gets more focus since his skirt is too short because of him growing, and his weeping, red face.
48	* FirstNameBasis: When Tatsuya at first started calling Seine by her last name. After they started living together, she told him to call her by her first name since she thinks Miyazaki is "made up". Also, Seine just calls him Tatsuya.
49	%% * FirstKiss / SacredFirstKiss: Seine and Minagi got their first kisses taken [[spoiler: by Yuzuki]]
50	* {{Foreshadowing}}: Tatsuya [[FirstNameBasis calls Seine "Seine-chan"]], and she shivers at this. The reason? One of the twins calls her the same.
51	* FourGirlEnsemble:
52	** Yuzuki (TheDitz), Seine (DeadpanSnarker), Shizuki ([[TheTease the sexy one]]) and Sheila (WildCard). Before Sheila appeared, Nagisa was the WildCard.
53	* FreudianTrio:
54	** Shizuki (manipulative Superego), Yuzuki (kind Ego) and Seine (vengeful Id).
55	** Alternatively, Seine (Superego), Tatsuya (Ego) and Sheila (Id).
56	%% * FuroScene: Seine had one in chapter 3. Yoshiyuki had it in chapter 7
57	%% * GenderFlip: An extra in volume 10 features this.
58	* GiantWallOfWateryDoom: The way the mermaids collet psyche.[[spoiler:..Also, Seine's image of death inside her mind]].
59	* GoingCommando: Seine spends half of the 5th chapter without panties because they got ruined and she only had a pair.
60	* {{Gorn}}: Courtesy of BrainwashedAndCrazy people upon Seine. Happens multiple times, including being thrown off a building, poisoned and stabbed with a glass bottle, choked to death, ImpaledWithExtremePrejudice, stabbed in the lung with a knife, and disarmed.
61	* GratuitousForeignLanguage: The mermaids (and Shizuki, sometimes) use Greek words.
62	* GrievousBottleyHarm: In chapter 4, Minagi's father stabs Seine with a bottle.
63	* HearingVoices: As the mushis manifest to the host after seeing Seine.
64	* TheHecateSisters: Yuzuki (ditzy maiden), Shizuki (eccentric mother), Seine (bitter crone).
65	* InnocentFanserviceGirl:
66	** Seine, being an EmotionlessGirl who considers herself a monster, is not bothered if somebody sees her shirtless or [[ThanksForTheMammary grabs her chest.]] She even takes her clothes off once to show Tatsuya that her wounds are healed. Of course, even if she doesn't freak out, Tatsuya does.
67	** Sheila counts too, [[spoiler: as being a mermaid, she is shirtless all the time; every time she sees Tatsuya after getting her human form, she's naked]] and of course Tatsuya gives her the classic PleasePutSomeClothesOn scream.
68	* ImagineSpot:
69	** Tsukasa, every time someone says they are living with Tatsuya because he picks them up, has an imagine spot of them as cute, pitiful homeless [[AlwaysFemale girls]] under the snow.
70	** Tatsuya also has one of Seine in a cute two-piece swimsuit after hearing they're going to the pool [[ImagineSpotting and Yuzuki seems to be watching it.]]
71	* {{Jerkass}}: All the mermaids except Ariel.
72	* LaserGuidedAmnesia: Everybody who had a Mushi taken off by Seine doesn't remember anything about their hatred towards her [[spoiler: as long they get to kill her before The Mushi was taken off]].
73	%%* LoveTriangle: Sheila -> Tatsuya -> Seine.
74	* LuminescentBlush: Tatsuya is prone to this. Also Yoshiyuki, Sheila, heck, even [[TheStoic Seine]].
75	* MayDecemberRomance: Tatsuya's parents had an age gap of 30 years and still they were HappilyMarried.
76	* MayflyDecemberRomance: Tatsuya's one-sided crush on Seine.
77	* MeetCute:
78	** Tatsuya first saw Seine after she stepped on his money after a couple of bullies threw it to the ground.
79	** Also, Tatsuya's parents. They met when he saw her hanging white radishes.
80	%% * MermaidProblem: PlayedForDrama...but in a ''very'' hilarious way.
81	%% * MindControlDevice: The Mushis.
82	%% * ModestyTowel: As improvised bikini.
83	* MoreThanMindControl: Mushi infected [[spoiler: Nagisa]]. Also Himenuma; though Mushi-infected, he seems to have a crush on Sheila.
84	%% * NoPeriodsPeriod: One day, Yoshiyuki was all mad, and Minato jokes that it must be "that day of the month".
85	%% * NotWhatItLooksLike: It has moments.
86	* {{Omake}}: There're lots of this in each volume, where Kagesaki talks about ups and downs of her while making Aion.
87	* OminousFog: Enati, the third mermaid, can use fog to [[spoiler: make an illusion of Simon]].
88	%% * OurMermaidsAreDifferent: The evil mermaids.
89	* PetTheDog: Seine comforts Tatsuya in the first chapter, telling him he can become a high caliber man.
90	* PervertedSniffing: Sheila smells Tatsuya's necktie.
91	* PinkySwear: Tatsuya and Sheila do a pinky swear when Tatsuya promises not to tell anyone that she's a mermaid.
92	* PrettyFreeloaders: Seine, Shizuki and Yuzuki (for a while) and, after TimeSkip, [[spoiler: Sheila]]. Tatsuya, apparently, has a thing for picking up girls to live in his house.
93	* RedHerring: The deal with Tatsuya's mother. [[spoiler:Her name was Umi (which means "sea") and Sheila was very much a carbon copy of her image, so many readers thought Umi was a mermaid too. In reality Umi was just a normal human but her psyche was taken by Sheila after her death so Tatsuya sometimes could "feel" his mother's esscence in Sheila.]]
94	* TheReveal: Why did Tatsuya saw Sheila as his mother at one point? [[spoiler: Because Sheila took her psyche when she died]].
95	* ReturningTheHandkerchief: Tatsuya used this as an excuse to talk to Seine in the first chapter.
96	%%* RidiculouslyCuteCritter: Chibi Piyo-Piyo
97	* RuleOfThree: Seine can die just three times per day. If she dies more than that, Aion has to "recharge" itself [[spoiler: and Seine will feel the pain of all those deaths]] before she can use Aion again.
98	* RunningGag: "Earthshake. There's been a lot of them these days."
99	* SeizaSquirm:
100	** In chapter 30, Tatsuya and Seine do this while talking to Tsukasa for midnight sneaking out of the house.
101	** Also, Seine had cramps for sitting so long in seiza at Tatsuya's parents's funeral event.
102	* ShipperOnDeck: Minagi seems to like shipping Seine with Tatsuya. It helps that it's obvious the guy is really in love with the girl and she wants to help him.
103	%% * ShipTease: Seine and Tatsuya.
104	* ShownTheirWork:
105	** There was really an earthquake at Port Royal that sank 2/3 of the city into the sea.
106	** Also, the mermaids can cause earthshakes from the sea; it's geologically possible that earthshakes provoke volcanic eruptions, therefore the mermaids did cause the Vesuvio eruption.
107	* SiblingRivalry: All the mermaids are sisters and some of them are trying to overpower her oldest sisters.
108	* SwallowedWhole: The only way to rip off the mushi from the host's body is Aion swallowing the host to "eat" the mushi.
109	* ThereIsOnlyOneBed: Shizuki and Yuzuki slept in the same bed Tsukasa was sleeping in after getting hit on his head because how could "high status" women like them sleep on the floor?
110	* TimeSkip: Volume 8 starts 4 years since the events of volume 7. Everybody grows older...[[NotAllowedToGrowUp except Seine]] who's immortal of course.
111	* TooKinkyToTorture:
112	** In the first chapter, Minato warns Tatsuya about not messing around with Seine because he thinks she is a masochist who likes being bullied. Hilariously "enforced" by Seine to keep Tatsuya off her back.
113	** [[spoiler: After getting ImpaledWithExtremePrejudice and removing one of the long stakes with Tatsuya's help, she had a LuminescentBlush and a dazed expression on her face. [[DoesThisRemindYouOfAnything "A lot of endorphins were released".]] The position they had to take in order to get the stake out (him behind her, pushing her forward towards the wall that the end of the skewer was braced against) was more than a little suggestive to begin with...]]
114	%%* TrueLovesKiss: Referenced. Tatsuya's face is priceless.
115	* WaterfallPuke: [[LethalChef Tatsuya's food]] has this reaction on everyone, except Seine. Meanwhile, it causes Shizuki to puke BloodFromTheMouth.
116	* WhamEpisode: Volume 10. ''The whole Volume 10''. [[spoiler:Tatsuya shouts aloud he likes Seine, Sheila infects Tatsuya via stealing his first kiss and send him to kill Seine at her sisters' demand, Tatsuya doesn't kill Seine and instead pulls himself out of the friend zone he has been in for 4 years by kissing her, Sheila is returned to the sea by Ariel, Shizuki and Yuzuki came back, the fated day is closer...[[ArsonMurderAndJaywalking and Seine is dressed as a]] {{Meido}}]]
117	* WhatIsThisThingYouCallLove: Seems to be the mermaids' case; specifically the emotional part of "love" since they do know "love" is used by humans to mate.
118	* YourApprovalFillsMeWithShame: Seine gets no other option but to rip the Mushis out of a crowd of {{brainwashed and crazy}} students without "exciting" the Mushis first. Shizuki applauds this act. Seine is not amused, since she knows what doing that means. [[spoiler:Hosts who aren't able to satisfy the Mushi's urge to kill Seine find themselves ''still wanting to kill her, but with no idea why''. This isn't good for their sanity.]]

Context Manga / HekikaiNoAion