* HeyItsThatVoice:
** [[Creator/AmiKoshimizu Himari]] is [[SpiceAndWolf Holo]] and [[VideoGame/TheKingOfFighters Mai Shiranui]]
** [[Creator/DaisukeHirakawa Yuuto]] is [[VisualNovel/SchoolDays Makoto Ito]]
** [[Creator/IoriNomizu Rinko]] is [[Manga/HeavensLostProperty Nymph]] and [[LightNovel/IsThisAZombie Haruna]]
** [[KeiShindou Shizuku]] is Kuro Kagami and [[IkkiTousen Gentoku Ryuubi]]
** [[YukiMatsuoka Kuesu]] is [[MahouSenseiNegima Eva]] ''or'' [[Manga/AzumangaDaioh Osaka]]
*** {{Yuki Matsuoka}}'s voice here is most similar to her role as Lisa Fukuyama in ''Manga/GirlsBravo''.
** [[Creator/ChiakiTakahashi Ageha]] is [[VideoGame/BlazBlue Litchi]] (aka Boobie Lady).
** [[Creator/MichikoNeya Sae]] is [[LightNovel/FullMetalPanic Sgt. Major Mao]] and [[VideoGame/{{Darkstalkers}} Hsien-Ko/Lei-Lei]]
** [[MasamiKikuchi Shuten-douji]] is... Wait, [[Manga/AhMyGoddess Keiichi]] and [[TenchiMuyo Tenchi]]!?
** [[KaoruMizuhara Tama]] is [[LuckyStar Misao Kusakabe]] and [[HyakkaRyouranSamuraiGirls Gisen Yagyu]], the latter being another BigBad character.
** [[MayakoNigo Sasa]] is [[VideoGame/ArcanaHeart Lilica Felchenrow]]
* 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.
* 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.
** 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.