* AlternativeCharacterInterpretation:
** Seriously, one can write an entire thesis over [[spoiler:Seishirou]]'s character, especially after his actions in Manga/{{X1999}}. [[spoiler:His reason for letting Subaru live after the boy witnessed his murder, and made the bet over if he could learn to love him; wherever he's really evil or just a result of his Sakurazukamori upbringing and wherever he actually loved Subaru but couldn't recognize it or was in denial]] are mayor themes of analysis.
** Subaru also is a close contestant, as one can write essays about him, especially after his development in X1999.
* AngelDevilShipping: Seishirou and Subaru are set up to be this way, both physically and mentally. And in the end, [[spoiler: it isn't deconstructed - just made even MORE apparent!]]
* EvilIsSexy: Oh ''yes''. There's something on Sakurazukamori![[spoiler:Seishirou]] that is just so ''damn'' alluring.
* GrowingTheBeard: The first chapter barely touches social themes and comes across as a comedy. However, the beard appears next chapter.
* HoYay: See HoYay/{{CLAMP}} for details.
* ItWasHisSled: [[spoiler: Seishirou is: the Sakurazukamori, the man Subaru met nine years ago, a [[TheSociopath murderous sociopath]], and Hokuto's killer.]] The first two [[TheUntwist aren't much of a twist]], but the last two make for one hell of a WhamEpisode.
* MagnificentBastard: [[spoiler: Seishirou]] turns out to be a massive asshole. But he's one very, ''very'' stylish and efficient SOB. [[spoiler: And if anything, he becomes ''even more of a MagnificentBastard'' in Manga/{{X1999}}.]]
* MemeticMolester: Seishirou, thanks to a certain annex and his tendency to be... well, Seishirou.
* MindGameShip: One of the BEST examples of all time.
* {{Narm}}: You either laugh or facepalm with the OVA theme song "Kiss Kiss." It repeats the same {{Engrish}} words over and over.
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