- Actor Allusion:
- Minami Nitta is learning how to speak Russian from Anastasia. A little funny when you realize that Aya Suzaki, Minami's voice actress, also does the voice of Hibiki who also speaks a little Russian, while Anastasia is voiced by Sumire Uesaka, who voices Fubuki from the same game. So that means Fubuki is teaching Hibiki how to speak Russian.
- Kaede Takagaki and Mizuki Kawashima sing together as a duet for the song Nocturne in the first BD volume, and in the anime (along with Sanae Katagiri) are in a unit together. Looks like Yukino and Yui are singing together as a duet again but this time, as idols.
- This isn't the first time Nao Touyama's voiced an Idol Singer, or even the last.
- Ascended Fanon: Kirari is frequently portrayed in fanworks with a special attachment to Anzu due to their tiny slothful girl/huge hyperactive girl juxtaposition. This has since become canon in official supplementary comics. They even duet Onegai Cinderella in a CD that is otherwise separated by same-type trios and are frequently pictured together in the Onegai Cinderella PV. They also have cards that, when placed side-by-side, reveal they are two halves of a greater illustration. And in the anime, the two are seen together even if they belong in separate units.
- Crossdressing Voices: With Shiki Aoki coming out as a trans man in 2020, this makes his role of Asuka Ninomiya one of the first cases of a female iM@S idol to have a man voice her.
- Defictionalization: The individual CDs that each unit records for their respective debuts which are seen for sale at various points in the anime have been released in Real Life under THE IDOLM@STER CINDERELLA GIRLS ANIMATION PROJECT series.
- In particular, "ØωØver!!", a song whose lyrics were written in the series by Miku and Riina, was in actuality written by Natsumi Takamori and Ruriko Aoki, the respective seiyuus for those characters.
- Fan Nickname: The Producer, having no officially confirmed name, is referred as TakeuchiP and TakeP based on his voice actor. Just as popular, if not more so, nickname is KuzukiP, due to his semblance to a certain stoic teacher from another anime. At least one store from Akihabara acknowledged the similarity.◊
- Follow the Leader: Following the success of Starlight Stage, the next two games in the franchise, Million Live and SideM, got Rhythm Game spinoffs of their own (Theater Days and Live on St@ge!, respectively).
- Meaningful Release Date: Probably unintentional, but Episode 24, which features Uzuki regaining the ability to smile again naturally after her emotional turmoil, and has her performing her image song, S(mile)ing, first aired on October 2nd, 2015, which was World Smile Day for that year.
- No Export for You: None of the games were localized for the English-speaking countries. You can still play both the Mobamas and Deresute regardless of your country origin however, with the language barrier as the main obstacle.
- Though you also had to follow several steps to keep your progress or unlocking most of the game features, including linking the game with a Japanese-registered Bandai Namco ID account. Alternatively, you can just use an account with registered BANAPASS ID regardless of the region.
- Playing Against Type: Nao Touyama as Mizuki Kawashima plays with this. It's no secret that she has voiced idol singers and has made a career out of character CD songs, but no one expected her to voice a mature, even-tempered older character, all of which are polar opposites of the type of characters she's typecast as.
- Similarly, Haruka Yoshimura, who plays the flirty Mika Jougasaki, commonly plays shy and soft-spoken characters, such as Ema Yasuhara from Shirobako, Nono from Urara Meirochou and Koharu Shiihara from Celestial Method. However, Mika herself is actually really shy, despite her flirty personality, so it's not entirely out of her field.
- Playing Gertrude: The anime's Producer is undoubtedly an adult in-series. Takeuchi himself was not; he was only seventeen when he played the character.
- Star-Making Role: Bandai Namco will splurge on a high profile VA every now and then, but many of the Cinderella Girls are voiced by complete unknowns and rookies. Depending on the viewer, this can be thought of as embodying the spirit of Cinderella Girls by giving newbie voice actors a chance to shine, or hiring the cheapest actors they can find.
- For Shunsuke Takeuchi, the Producer was his first huge hit part.
- The Wiki Rule: Project iM@S Wiki.
Trivia / THE iDOLM@STER: Cinderella Girls