* TheDanza: Yuu Shimamura, the ClassRepresentative, is voiced by Creator/YuShimamura in the anime. Her name wasn't revealed until chapter 49, which was published after the anime ended.
* NamesTheSame: Her name is taken from another Kuesu Jinguuji from ''Palladium Garden'', Matra's previous {{Hentai}} work. Also doubles as {{Expy}} since she's basically a BleachedUnderpants version of said character.
* NoExportForYou: The LightNovels, ''Book of the Gaiden'', and the {{Yonkoma}} adaptation (only a section of it was put in Volume 0). The anime is a slight subversion since it is (legally) streamed by Crunchyroll.
* PlayingAgainstType: Creator/MasamiKikuchi, known for voicing NiceGuy harem leads [[Manga/AhMyGoddess Keiichi]] and [[TenchiMuyo Tenchi]], plays the AffablyEvil [[{{Youkai}} Oni]] Shuten-douji. He actually does a good job in keeping the nice guy vibe while acting as an antagonist.
* PortmanteauSeriesNickname: ''[=OmaHima=]'', which is even used by [[WordOfGod the author himself]].
* WhatCouldHaveBeen: WordOfGod originally planned the series to end at the sixth volume. However, ExecutiveMeddling forced him to extend it to twelve volumes.
** Creator/FUNimation considered picking up a license to the anime [[http://www.animenewsnetwork.com/news/2012-01-24/funimation-hosts-anime-licensing-survey by means of surveying]]. Sadly for fans, it did not happen, forcing it back into NoExportForYou territory.