* CrowningMusicOfAwesome: [=ChouCho=] brought her A-game with the opening theme, [[http://www.youtube.com/watch?v=OBp5XMc-eNA "starlog"]] and the insert song of Episode 9, [[http://www.youtube.com/watch?v=7CS3oZ889M4 "kagami"]].
** Episode 6: [[http://www.youtube.com/watch?v=jiRdixLq38o "Shoujo Shinka!"]] (a.k.a [[spoiler:'''EMIYA''']]) ''and'' [[http://www.youtube.com/watch?v=hGJSdgwtZw8 "Shoujo yo Kate"]] (a.k.a [[spoiler: '''SWORD OF PROMISED VICTORY''']]).
* GrowingTheBeard: It starts out as a fairly comedic, GenreSavvy series about Illya as a MagicalGirl. It then steadily becomes more serious. The CharacterDevelopment and ArtEvolution become more apparent in its second season, and the gentle amounts of FanService and heavier action clearly show it's a {{Seinen}} series.
* HarsherInHindsight:
** Do you remember the time when Miyu said "brother" to Shirou when she was at Illya's home? [[spoiler: In the universe from which Miyu came Shirou is her brother and Miyu is the vessel of the grail, and he went on a crusade against (very powerful) people who kept her captive, sending Miyu to the universe Illya was from, but ended up getting caught by them and tortured in a dungeon. And she probably remembered about him every time she saw Illya's Shirou]]. Ouch.
** There is also a scene at the end of the 6th episode of the anime (not present in the manga) where [[spoiler:Rin wants to take unconscious Illya home after the Saber card was captured, only for Miyu to interrupt and say that she will be the one to do it. And she carries Illya home while a music box plays in the background.]] Truly a heart-warming moment, but if you know that [[spoiler: Miyu is her universe's Holy Grail vessel and she suffered quite a lot because of it]] then you know why she did it and while it still is a heart-warming moment then, the context changes from "for a friend" to "[[spoiler:for someone who bears the same burden as me]]".
** PlayedForLaughs Illya being a lesbian rapist for Maid Miyu who doesn't seem to mind [[FunnyAneurysmMoment stops being funny]] when you consider [[spoiler: she's an {{expy}} for Sakura from FateStayNight who ''was'' conditioned to accept being raped.]]
** Really, just about everything with Miyu becomes this [[spoiler:when we find about about her world and her life with the Ainsworths.]] It starts as early as when she asks Illya why she's fighting. She's not happy about Illya treating collecting the cards like a game, [[spoiler:probably because of how the cards are used in her world, and by who.]]
* JustHereForGodzilla: [[spoiler:Quite a number of non-yuri fans intentionally jumped in after knowing that Gilgamesh appears along with Gates of Babylon, Vimana and Ea.]]
* LesYay: Miyu develops a pretty obvious crush on Illya, who ([[IDidntMeanToTurnYouOn apparently unintentionally]]) doesn't do a whole lot to discourage it.
** IWantMyBelovedToBeHappy: Miyu gives Illya a day-pass on being a magical girl, and takes on the final card alone, just to spare Illya. This plot unfolds [[AchillesInHisTent exactly as it always does of course]].
** She's desperately trying to ignore it; like when she accidentally kissed Miyu during a dream of Shirou just as she woke up. Miyu didn't mind.
** Illya's Maid {{Fetish}} results in her ''mounting'' Miyu (''Twice!'') before she can compose herself. Miyu didn't mind.
** [[spoiler:Kuro, on the other hand, seems to ''actively encourage'' this. To the point that apparently, she spent the entire time between Chapters 4 and 5 of the second season just going around town kissing girls (Including ''Taiga!''). Granted, she was doing it to drain their mana, but judging by the one we actually get to see, she also took the time and effort to seduce at least a few of them first]].
*** [[spoiler: Then comes Chapter 8 of Drei]].
** [[spoiler:Kuro]] in general with both Miyu and Illya. She managed to make the former unconscious with a French kiss.