* AlternateCharacterInterpretation: Zorndyke. Dear lord Zorndyke.
* BigLippedAlligatorMoment: The seemingly PerfectPacifistPeople introduced towards the end given how they pop up during a war of genocide.
** The scene in episode 2 where Verg starts licking one of Mutio's sisters during his VillainousBreakdown, and then Mutio herself when he finds out that she made physical contact with a human during the battle. Both are done in a [[{{Squick}} very disturbing]] way.
** During the scene in episode 1 where Hayami saves Mutio and brings her into the water, Mutio stares at Hayami before emitting a sonic cry of some sort. Why she does this is not explained, and we never see her nor any of her sisters do this in the rest of the OVA.
* CultClassic
* EnsembleDarkhorse: Mutio, for her unique design, and her relationship with Hayami.
* ItsShortSoItSucks/ TooGoodToLast: A common critique of the show is that while it has an interesting premise, characters and lots of potential for both of those to be developed the fact that it was only four episodes long kind of made that impossible.
* {{Moe}}/ TheWoobie: [[CuteMonsterGirl Mutio]].