- Abandon Shipping: Viewers were entirely sure that Jun and Kyoko would get together come the end of the anime, as that meant that not only would the path be cleared for Mion/Wataru to happen, but also that Kyoko would finally get the husband she seeks. However, in episode 41, it was revealed that they are actually half-siblings born from the same mother. But then in DMF episodes 44-46, it was revealed that they're not related after all. Her mother adopted him after his parents died in a road accident.
- Adaptation Displacement: Most people know that Pretty Rhythm: Aurora Dream is based off an arcade game, but not many know that there was a version preceding Aurora Dream, which was Mini Skirt. There was also a manga adaptation by Mari Asabuki far before Aurora Dream got adapted, which starred Rizumu, Serena, and Kanon as the main characters.
- Big-Lipped Alligator Moment: Episode 27. You're watching an anime about girls achieving their dreams in show-biz when BAM! Random plot about returning magical dolphin to its parents right in your face!
- Cult Classic: Among adult idol anime fans, the series still holds up despite it being less popular than its successors and rivals, especially for its competitive and somewhat dramatic plot.
- Ear Worm: The OP (named 'You May Dream', by LISP) is pretty catchy.
- Fandom Rivalry: Most prominently with Aikatsu!, but also with other idol series, such as AKB0048, Love Live! and The iDOLM@STERnote . And after the mega successful spinoff series King of Prism by Prettyrhythm took off, it has some infighting of its own.
- Les Yay: Lots. Episode 19 had Mion invite Rhythm and Aira (one at a time) to go on a date with her, so she could decide who would be the best partner. And until episode 22, Mion felt like she was being a third-wheel in Aira's and Rhythm's relationship.
- Aira and Rhythm are always supporting and worrying about each other in their Prism Shows, so much that the usually determined Rhythm decided that she would tone down her act so Aira could follow her moves.
- Until MARs had been formed, Aira always referred to Mion as 'Mion-sama' and looked at her with starry eyes. When Mion tells her to cut it out and call her just 'Mion', Aira turns even more starry-eyed and repeats her name several times, which flusters Mion.
- Mion and Rhythm at times seem Tsundere towards each other.
- Kaname is always hugging and jumping onto Aira and telling her how much she loves her. She has also touched Mion's chest and licked Rhythm's face.
- Older Than They Think: The arcade game did not start with Aurora Dream. The first title is Miniskirt, which didn't get animated.
- Sophomore Slump: Aurora Dream, the first season, is well-regarded, and the third season, Rainbow Live, is widely considered the best. But the season in-between, Dear My Future, which is a direct sequel to AD, is seen as very weak.
- Some Anvils Need to Be Dropped: Dear My Future had a South Korean supporting cast because Masakazu Hishida, the director, wanted to improve South Korean and Japanese relationships and felt that he was only able to do so by creating media that put South Koreans in a positive light. Note that Dear My Future first aired when the Hallyu wave was facing decline in Japan due to the Dokdo Islands dispute.
- Tastes Like Diabetes: The series in general. Which leads to some Mood Whiplash during the darker moments.
- Ugly Cute: The mascots aren't exactly attractive. Penguin-sensei is... what he is.
- Viewer Gender Confusion: The mascots. Do they even have genders, honestly?
- What Do You Mean, It Wasn't Made on Drugs?: The Prism Jumps.
YMMV / Pretty Rhythm Aurora Dream