Alas, Poor Villain: Taisho is built up as this massive Big Bad, but as it turns out, he wanted Karen to kill him and for her to take his place and "free us from this hell."
Fridge Horror: The fact that there might still be humans left who weren't discovered.
Lost in Medias Res: Due to there being two notable time skips that had a lot of things happening (one year), it can get very confusing. Just where did Casey come from? When did Karen change into such a badass? And just who is Ben dating?
Les Yay: Heather and Marcy's friendship has vibes of possible attraction.
They Wasted a Perfectly Good Character: Samantha Is killed off right after the reveal that she is aware of the dark magic of the school and what the teachers are up to and that a lot of her Alpha Bitch behavior towards Heather is an act. This aspect of her character could have been developed further but no such luck.
