!!Anime/Manga:
* BadassDecay: Rio in the anime, after — in fact, ''because of'' — her very badass introduction, becomes sick but never goes back to her initial level of badassery even after she's discharged from hospital.
* BaseBreakingCharacter: Half the fandom finds Hiyono annoying, the other half think she's one of the best characters ever made.
* HoYay: [[ShipperOnDeck Everyone in the series]] seems to [[strike:ship]] ''idolize the platonical relationships'' of Kanone/Eyes and Ayumu/Hizumi. Mostly it's discreet and treated seriously more than just fanservicey... with the exception of [[http://i26.photobucket.com/albums/c110/EilidhRois123/9db0614a.jpg?1284493507 the picture of Kanone and Eyes from the anime's ending]], for which there are simply no words. Ayumu and Eyes also have moments, especially in the anime.
* LauncherOfAThousandShips: Ayumu
* {{Narm}}:
** The Author's free use of "God", "Devil" and even "the Creator", to describe Kiyotaka and Yaiba and the reverence tone they use when refer to them, as if they really are God is especially ridiculous, more because this is a ''detective'' manga.
** Likewise the Adam/Eve comparison. Yaiba was naturally born with a missing rib and was considered Adam. Kiyotaka was born 16 years later and kill Yaiba, so he's Eve?
* TearJerker: There are lots of them, especially by the last three books of the manga (Kanone and Hizumi are good at these). Also Charlotte's backstory in ''Alive''.
* {{Wangst}}: Everything Ayumu says about how he can never compare to Kiyotaka, how there's no hope in ever surpassing him [[spoiler:though there's a reason for it, considering what [[GodInHumanForm Kiyotaka]] is]],and how [[BecauseDestinySaysSo destiny always wins]] because [[spoiler:[[AGodAmI Kiyotaka]] says so]].
* TheWoobie: Many, but Hizumi is probably the most prominent one. [[TearJerker Just wait to hear from him about his childhood]].
** [[IronWoobie Iron]] and StoicWoobie (Eyes Rutherford. Despite all the mess that just keeps happening to him, from being cursed to having his best friend turn on him and try to kill him [[spoiler: and then dying]], he's just ''not going to stop hoping'', and cries all of one single tear in both the anime and the manga. Ayumu as well ; though he angsts a lot in the beginning, [[CharacterDevelopment he gets pretty awesome at overcoming it all]] by the end of the manga.)
** Ayumu refuses to let himself die, even after all the [[TraumaCongaLine quite harrowing events]] of later chapters. [[spoiler: He's more or less using this to guilt-trip the rest of the Blade Children to stop moping, live their lives, and ScrewDestiny. The way it works out makes him into more of a MessianicArchetype.]]
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