* AntiClimaxBoss: Fuuma in the film adaptation.
* CrowningMusicOfAwesome: A lot of piano players know about Naoki Sato's sublime LonelyPianoPiece [[http://www.youtube.com/watch?v=MhkxSHsb0xM Sadame]] which is Japanese for "Destiny" which is omnipresent in the anime in its symphonic version.
* DesignatedHero: Kamui at first due to being a JerkAss who avoids contact with anybody. It should be noted that Yuzuriha and Sorata actually understand why he acts like that and Hinoto even reveals that he could actually destroy mankind depending on his development despite her visions of Kamui as messiah figure. Kamui finally becomes more likable when opening up to Kotori.
* DieForOurShip: Poor, ''poor'' Kotori.
** And if you cross paths with a Seishirou/Subaru fangirl, ''don't'' mention Kamui. Similarly, saying the name "Subaru" in front of a Fuuma/Kamui fan can be as unwise as mentioning Kotori's.
* DracoInLeatherPants: Fuuma and ''especially'' Seishirou.
* EvilIsSexy: Kanoe is the embodiment of this trope.
** So are Seishirou and Yuuto.
* EpilepticTrees: Oh, all the theories that have run around about Keiichi in CLAMP fandom.
* EnsembleDarkhorse: There are a lot but two most popular are probably the energetic Sorata and the cold yet kindhearted Subaru.
* FauxSymbolism: A certain scene in TheMovie, in which [[spoiler: Kotori's dreamseer abilities manifest when Kamui sees her inside a room that looks as if it was filled with amniotic liquid, with the girl whispering [[DoesThisRemindYouOfAnything "What is this Kamui? It's inside of me... it's gonna be born soon... I'll give birth to it soon..."]]. Of course this refers to the Shinken, which Fuuma pulls out at the cost of her life in the end.]]
* HoYay: C'mon, it's ''Creator/{{CLAMP}}.'' The most prominent case [[spoiler: Kamui and Fuuma]] is later turned FoeYay, natch. There are other common matchups as well, including Subaru and Kamui (mind penetration and {{Big Brother Mentor}}ship FTW) and Fuuma and Seishirou (mostly for the symmetry, it seems). Seishirou and Subaru are far enough out of subtext and into text that HoYay doesn't really apply anymore.
** [[spoiler:Fuuma]] Seishirou was teasingly (and gloriously) hinted at when Seishirou [[CrowningMomentOfAwesome defiled the Shibuya 109 building's kekkai with the blood of an innocent, sending it careening into the Shibuya Station, thus breaking both the Shibuya kekkai and the Yamanote kekkai in one fell swoop]], something that the combined efforts of three Dragons of Earth could not achieve - only to watch it burn whilst discussing sampling delicacies from Tokyo's best restaurants before destroying them all.
* LateArrivalSpoiler: Can you guess who will be the main antagonist by checking the cover of a DVD?
* MagnificentBastard: Yuto and Seishiro are very good examples of this.
* MemeticMutation: "Yuuto is a PIMP!" "Kanoe is a hoe!".
* MindGameShip: Both Seishirou/Subaru and Fuuma/Kamui qualify.
* MoralEventHorizon: Fuma crosses it [[spoiler: upon murdering his own sister (and VERY bloodily) to set off TheEndOfTheWorldAsWeKnowIt.]]
* {{Narm}}: In the anime, the abundance of OffModel animation can ''seriously'' disrupt the mood.
* TheScrappy: Kotori, because femininity ''and'' not being physically active is an unforgivable flaw [[RealWomenNeverWearDresses according to many fans]].
* ShipToShipCombat: Seishirou/Subaru VS Subaru/Kamui. ''''[[GuiltyGear Heaven or Hell, let's rock!]]''''
* {{Wangst}}: Kakyou
* WhatDoYouMeanItsForKids: The series is mistaken for {{Shonen}}[=/=]{{seinen}} when it is {{shoujo}}. This is due to violent content and a dark story.
** It fits pretty well in shoujo standards, however, considering the storyline's strong focus on emotions and drama. That's very proper of shoujo mangas.
* WhatDoYouMeanItsNotSymbolic: This is essentially the Gospel According to Ageha. The major alteration from Judeo-Christian eschatology is the dualism, with the two sides evenly matched and only a slim moral advantage on the part of the Dragons of Heaven.
* WhatMeasureIsANonBadass: A lot of fans just ''love'' to bash Kotori for being not only an IllGirl YamatoNadeshiko, but for daring to be emotionally and psychologically damaged after [[spoiler:seeing the birth of the second Shinken]].
** Also, Kamui was [[{{Evangelion}} Shinji Ikari]] before Shinji ever really existed. He was HOTLY bashed and loathed by fans for daring to cry and angst over his shitty destiny and [[spoiler: the terrible breaking of his, Kotori and Fuuma's bonds]].
* TheWoobie: Kakyou, Kotori, Subaru, Kamui, [[spoiler:Yuzuriha when Satsuki decides it's time for a very literal KickTheDog moment and kills Inuki]]... a good chunk of the main cast, really. Not so strange when you consider that they're Team Keep Humanity Alive. Among the fandom, Subaru is the undisputed King of Woobieness.
** Kakyou Kuzuki is a Dragon of Earth. Team Kill Humanity to Save the Earth isn't entirely without Woobies, you know? Outside the movie, pretty much everyone is a Woobie or just plain Affable. [[spoiler: Fuuma's theme is granting wishes (read: Killing people who want to die), the Sakurazukamori assassin is a position apparently passed on by death at the hands of the one the current assassin loves (Seishirou killed his mom), Satsuki was used by first a father and then corporate businessmen who want to exploit her. Kusanagi is perhaps the only one on the Dragons of Earth who takes his side (though halfheartedly) because he's a nature-lover. (Oh, and he's ready to BackStab FUUMA to save Yuzuriha.) Nataku hardly has a past at all because he's a clone. That leaves Yuuto, who's incredibly cheerful and friendly who's pretty much in it ForTheLulz, and even then he wasn't fully evil as he has a sister he misses and genuinely cares for ''and'' refuses to take advantage of Satsuki's crush on him when he could've perfectly done so.]]
** [[spoiler: Nataku]]'s case is ambiguous, since he might not have a proper past [[spoiler: since he's a clone]] but in the manga [[spoiler: what's left of the person he was cloned from's memories play a ''very'' important part in his '''very''' spoileriffic and sympathetic death.]] You could even make a case for the anime, as [[spoiler: Fuuma absorbs Nataku's body to heal himself after Sorata almost kills him ''because'' of his Wish and former life's memories, in a sense.]]
** Subaru was a Woobie before X even started, having lost his twin sister [[spoiler: at the hands of their best friend / mutual love interest, Seishiro. Yes, HoYay and FoeYay in a single package.]]