History YMMV / TheMysticArchivesOfDantalian

* GeniusBonus: Some of the Phantom Books are actual literary works.

* FandomRivalry: One sparked between this series and ''{{LightNovel/Gosick}}'' after the former's anime started airing two weeks after the last episode of the latter. Comparisons were made about which series was more enjoyable (as both light novels and anime adaptations) and which main heroine was better between Victorique and Dalian.

* TheyChangedItNowItSucks: Some fans of Dalian's outfit in the light novel were not happy with her different look in the anime.

* CompleteMonster: [[LoonyFan Paula Dickinson]], from "Book of Soul Exchange", stood out for her truly horrible crimes. An obsessive fan of "Crown of the Dog Days", [[StalkerWithACrush she stalked the author Leni Lentz]] and assaulted and harassed many of his friends and family. When she found out the ending to Leni's final book in the trilogy, out of rage and spite she took Leni and her lover hostage and tried to force him to redo the ending. When Leni remade it, Paula wasn't satisfied, killing him and then [[FateWorseThanDeath subjecting him and his lover to a cycle of life and death]] through her Mystic Tome, which involves reviving and brutally killing them over and over again in front of each other. When Huey and Dalian start to uncover her crimes through Leni's message of help, Paula decides to take the two prisoner and brutally tortures the couple again to "discipline" them.

* TheyChangedItNowItSucks: Some fans of the light novel are not happy with Dalian's change in wardrobe for the anime.

* IAmNotShazam: The titular "Mystic Archives"/"Bibliotheca Mystica" is only implied to be the name of the library guarded by two girls, and neither of them is named Dantalian (Dalian the Black Biblioprincess, and the girl in white trapped within said archives). "Dantalian" is implied to be the name of the minotaur keeping the latter imprisoned, as Dantalion is the name of the 71st demon in the ''Literature/ArsGoetia''.

* TheyChangedItNowItSucks: Some fans of the light novel are not happy with Dalian's change in wardrobe for the anime.
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* IAmNotShazam: The titular "Mystic Archives" is the unofficial name of a place guarded by two Dalians (the Black Biblioprincess, and the girl in white trapped within said archives). ''Dantalian'' is implied to be the minotaur keeping the latter Dalian imprisoned, as Dantalion is the 71st demon in the ''Lesser Key of Solomon''.

* IAmNotShazam: The titular "Mystic Archives" is the unofficial name of a place guarded by two Dalians (the Black Biblioprincess, and the girl in white trapped within said archives). ''Dantalian'' is the minotaur keeping the latter Dalian imprisoned.

* FandomRivalry: One sparked between this series and ''LightNovel/Gosick'' after the former's anime started airing two weeks after the last episode of the latter. Comparisons were made about which series was more enjoyable (as both light novels and anime adaptations) and which main heroine was better between Victorique and Dalian.

* NightmareFuel: Has its own page [[NightmareFuel/BibliothecaMysticaDeDantalian here.]]
* SceneryPorn: Some scenic shots in the anime are lavishly done.

* [[HoYay LesYay]]: In the first part of Episode 8, Dalian fawns over a teddy bear and Camilla negotiates with a collector in order to obtain it, giving him a Mystical Tome in exchange. Camilla explains to Huey that she doesn't mind losing the power to get anything she wants because she now has what she always wanted, and looks fondly at Dalian, happy with her new teddy bear.