!! The Manga Series:

* DevelopmentHell: In the collected volume for the manga's finale in 2004, author Kentaro Yabuki expressed intentions to create a sequel series. However, his work as artist on ''Manga/ToLoveRu'' (and it's sequel ''Darkness'') proved so successful, he instead went with his other stated option of continuing Train and Eve's story via their {{Exp|y}}ies Kuro and Yami.
* PopCultureUrbanLegends: Though Shiki is androgynous and uses gender-neutral language, he is officially male in every version of the manga and anime, which is essentially uncontested in the Japanese fandom. The manga's English fan translators assumed Shiki was a girl once he was unmasked, creating a myth in the series' English fandom that both [[GenderFlip the anime]] and [[ShesAManInJapan official English translations]] changed Shiki from female to male.