* KeepCirculatingTheTapes: The manga. The first three volumes can be nabbed without too much trouble, but the fourth volume is difficult to find even ''with'' the help of the internet.
** This is untrue, actually. The translation for the fourth volume was cancelled.
* OtakuOClock - The show was meant to be watched by men who had nothing to do late at night.
* RelationshipVoiceActor: Creator/NanaMizuki (Shinobu) and Creator/RieKugimiya (her sister Miyabi) reunites as sisters again, [[Film/TheHungerGames albeit in more tragic circumstances]]. Also [[Anime/MagicalGirlLyricalNanoha as classmates]].