- Actor Allusion:
- The manga version already makes one such joke. If Leopard (who's voiced by Jun Fukuyama) was human, in his own words, he'd look like Lelouch Lamperouge. This also took a step further in the Sora Wo Kakeru Shoujo D manga's ending, when Leopard's shell cracks. The next scene features someone quite familiar...
- Many of the characters (such as Bougainvillea and Mintao) resemble other characters from My-Otome, who are also voiced by the same voice actors (Kikuchi voices Arika, and Koshimizu voices Nina Wang in there).
- Xanthippe is played by Rie Tanaka. Her hobby is listed as "singing", but her weakness is "tone-deaf".
- Anime First: The manga spinoff(s) came later.
- Fan Nickname:
Trivia / The Girl Who Leapt Through Space