* NightmareFuel: Zero in both forms. The first one is a giant white Elebit with blurry lines and creepy eyes, and the second is a HumongousMecha with [[RedEyesTakeWarning glowing red eyes]].
* RetroactiveRecognition: The lead artist, Akihito Tsukushi, would later go on to create Manga/MadeInAbyss.
%%* SpiritualAdaptation: Essentially ''Series/FindersKeepers: The Video Game''.
* TheWoobie: Kai is so being treated as TheUnfavorite compared to the sheer amount of Elebits even though he has no siblings.
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