Trivia: Kami-sama no Inai Nichiyoubi
- Actor Allusion: Dee is known as a "Witch". Sound familiar?
- Bonus Episode: The final BD/DVD has a bonus 13th episode called "Memories," and it's divided into three parts. Part 1 shows the characters at a hot spring, Part 2 focuses on Alice's encounter with Hampnie prior to the beginning of the series, and Part 3 reveals how Hampnie first met Hana.
- Fan Nickname: Hampnie has been affectionately called "Humpty" and "Hamburger."
- Hey, It's That Voice!:
- In the Japanese version:
- In the English version:
- The Other Darrin: Alfa was voiced by Yuko Goto in the drama CD, but for health reasons she was replaced by Rina Sato in the anime.
- Portmanteau Series Nickname: Kaminai