- Actor Allusion:
- Fan Nickname:
- Yuno Gasai is known by many as the Queen of—no, Goddess of Yanderes.
- Uryuu Minene is called the cosplay bomber, primarily for her first appearance where she bombs Yukiteru's school while wearing a lolita-style outfit.
- I Knew It!: Yuno being from an Alternate Universe had been more or less accepted as a solid theory long before The Reveal confirmed it.
- No Export for You: Funimation's initial release of the anime didn't include the Redial OVA, but they managed to dub it in 2017 when they included it in the Blu-ray/DVD set.
- Relationship Voice Actor: Funny enough, many characters are also voiced by Nichijou seiyuus. Yukiteru is Mai Minakami, Minene is Mio Naganohara, Kamado Ueshita is the Professor, Kousaka is Sakamoto, Ryuuji Kurosaki is Takasaki-sensei, and John Balks is Dolph. And the Deus Ex Machina is a pair of wooden cubes.
- Too Soon: Tokyopop changed the name of the Twin Towers to "The Double Tower Building" in Volume 9. It doesn't help that it is attacked by the series' resident terrorist bomber.
- The anime sidesteps this by adding more towers and renames it the Quad Towers.
Trivia / Future Diary