* HarsherInHindsight: [[spoiler: Shion not being able to get the multiplication table right is funny until you find out that back in his childhood his physical and mental capabilities worsened after a botched Ritual.]]
* IronWoobie: Shion, especially [[spoiler: after you find out about [[TheReveal his backstory]].]]
* NightmareFuel:
** Faust hanging out inside other people's bodies is creepy enough, but the way in which he comes out is always extremely disturbing...
** And then in chapter [[spoiler: 41]], when he takes his PsychopathicManchild-ness up to eleven.
** [[spoiler: His true form, a strange demonic thing]], revealed at the end of chapter [[spoiler: 46]].

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