* DesignatedHero: If Benika's plan succeeds, the Kuhoin family [[spoiler:is more or less doomed to extinction.]]
* DesignatedVillain: The Kuhoin "traditions", as sick as they seem, [[spoiler:are what the family has to do in order to survive.]]
* FridgeLogic: Yes, of course, because we all know [[spoiler:[[SarcasmMode that adoption is not a viable alternative according to traditional Japanese customs]]]].
** FridgeBrilliance: Then again, that may have been part of the plan all along.
* MagnificentBastard: Renjou.
** The Kuhoin... family tree.
** Also, to some people, the fact that this is about a teenage boy living with a seven year old girl.