* ActorAllusion - Episode 11 of ''Purezza'', where [[Creator/FumihikoTachiki Gentou]] goes back to his days of wearing ScaryShinyGlasses and [[Anime/NeonGenesisEvangelion commanding biomechanical robots in an underground base]].
* HeyItsThatVoice
** To drive home the fact the Nogizaka family is a BadassFamily:
*** [[Creator/MamikoNoto Haruka]] is [[Anime/{{Monster}} Anna Liebert]]
*** [[Creator/FumihikoTachiki Gento]] is [[Anime/NeonGenesisEvangelion Gendo Ikari]]
*** [[Creator/AyaHisakawa Akiho]] is [[Anime/SailorMoon Sailor Mercury]]
*** [[MaiGoto Mika]] is [[Manga/FullmetalAlchemist May Chang]]
** Then there's also their {{Meido}} squadron:
*** [[Creator/KaoriShimizu Hazuki]] is [[MagicalGirlLyricalNanoha Signum]]
*** [[Creator/KanaUeda Nanami]] is [[VisualNovel/FateStayNight Rin Tohsaka]]
*** [[Creator/RieKugimiya Alice]] is [[LightNovel/ShakuganNoShana Shana]] (doubles as [[TalkingToHimself Talking To Herself]] with ''Purezza's'' Touka Tennouji, a [[PigeonholedVoiceActor textbook]] {{Tsundere}})
*** [[Creator/YukaIguchi Rio]] is [[MayoChiki Subaru Konoe]]
*** [[Creator/YokoHikasa Iwai]] is [[IchibanUshiroNoDaiMaou Junko Hattori]]
** Other characters would also not want to get left behind.
*** [[Creator/WataruHatano Yuuto]] is [[StreetFighter Rufus]]
*** [[Creator/HitomiNabatame Ruko and Milan]] is [[IkkiTousen Kan'u Uchuu]]
*** [[MiyuMatsuki Yukari]] is [[VideoGame/MeltyBlood Hisui]]
* RelationshipVoiceActor - [[Creator/FumihikoTachiki Gentou]] and [[Creator/AyaHisakawa Akiho]] used to be Shinigami teammates as [[Manga/{{Bleach}} Kenpachi and Retsu]], respectively.
** ''Purezza'' gives us [[Creator/MamikoNoto Haruka]] and [[Creator/RieKugimiya Touka]] -- a tandem not seen since [[LightNovel/ZeroNoTsukaima Tiffania and Louise]] and [[LightNovel/ShakuganNoShana Hecate and Shana]].
** [[Creator/KaoriShimizu Hazuki]] and [[Creator/KanaUeda Nanami]] are like the inverted version of the relationship between [[LyricalNanoha Signum and Hayate]].
** [[Creator/MamikoNoto Haruka]] and [[Creator/RinaSato Shiina]] are like a JustFriends version of [[MahouSenseiNegima Nodoka and Negi]], although there's a bit of LesYay going on here.