Trivia: ef - a fairy tale of the two.
- All-Star Cast: The English dub of both memories and melodies is full of well-known veterans — even Sentai Filmworks declares so in its marketing materials. We have Greg Ayres, Luci Christian, Chris Patton, Brittney Karbowski, Monica Rial, Hilary Haag, Illich Guardiola, and David Matranga.
- The Danza: Hiro Hirono is voiced by Hiro Shimono.
- Hey, It's That Voice!: The anime adaptation mostly retains the original visual novel's voice actors, albeit under assumed names. Only Hiro's and Kyousuke's voice actors underwent The Other Darrin treatment.
- Japanese: So this is what Fia would sound like doing sex scenes as Chihiro.
- English: Misuzu can't catch a break, even if she is reborn as Chihiro.
- English: For extra fun, the voice actresses for Miyako, Kei, Mizuki, and Yuuko also voiced Nagisa, Ayu, Yui, and Yuiko, respectively — the latter four are all Key/VisualArt's characters just like Misuzu.
- Reclusive Artist (in-universe): About three or four people know who Hiro really is, and he writes under a pen name.
- Write What You Know: The main characters' hobbies and occupations are suspiciously similar to that of a visual novel developer team's main crew.