- Actor Allusion: Takumi Asano and Angela are voiced by Ryohei Kimura and Aki Toyosaki, who also voiced L-Elf and Lieselotte from Valvrave the Liberator. Both sets of characters are romantically involved. And both this show and Jewelpet Happiness premiered in the Spring of 2013.
- Cross-Dressing Voices: Izumi Taira, he who strives to be Rated M for Manly, is ironically voiced by a woman.
- Relationship Voice Actor: Three out of the male quartet share voices with the Karlstein Institute graduates from Valvrave the Liberator. Also, Ryohei Kimura and Aki Toyosaki have a romantic relationship in both shows.
Trivia / Jewelpet Happiness