* AbandonShipping: The ending of ''J to X'' has all the three marionettes regress into a child and erased their memories, effectively demoting them from potential love interests to adopted daughters to Otaru.
* {{Anvilicious}}: ''J to X'' had such a blatant antideforestation episode that most viewers already got the message in the first five minutes.
* BigLippedAlligatorMoment: In ''J to X'' there is a flashback episode where while the Marionettes are remembering their origins, Bloodberry has a memory of her being berserker and gets dizzy. This is never brought up ever again.
* LesYay: Marine [[LoveAtFirstSight imprints]] on Lime when they first meet, and spends most of ''J Again'' in a RomanticTwoGirlFriendship.
** BaitAndSwitchLesbians: [[spoiler:During her HeroicSacrifice, she realizes that her love of the oceans came from her awakening underwater -- meaning that her feelings for Lime were completely platonic, y'know?]]
* HilariousInHindsight: In the english dub, Creator/PaulDobson plays both Faust and Hess, something that has happened in this dub only. How is this an example of this? Because in the light novels [[spoiler: Hess turns out to be the ''original'' Faust.]]
* {{Macekre}}: Tokyopop's "translation" of the manga.
* {{Narm}}: Some of the English dub results in bits of this.

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