Episode 48: Just when it seems as if Pretty Cure is about to be defeated once and for all by The Dragon, Westar and Soular, who had supposedly died two episodes prior, swoop in to defend the girls. The general populace of Labyrinth may be considered Big Damn Heroes as well, since they are the ones who gave Pretty Cure the power to actually get back up and fight.
Book Ends: Episode 23 has Love's attempts to get Setsuna to join rejected.
But Now I Must Go: At the end of the series, Labyrinth is now a safe and friendly enough environment for Setsuna, Hayato, and Shun to return, and return they do. Of course, there's no reason why they can't come back and visit. Which Setsuna always does whenever it's time for the customary team up movie. And if New Stage 2 is to be trusted, Setsuna still makes occasional visits to do dance training routine.
Catch Phrase: Love's "Let's obtain happiness!"note "Shiawase getto da yo!", Miki's "I am perfect!"note "Atashi kanpeki!", Inori's "I believe!"note "Watashi, shinjiteru!", and Setsuna's "I will do my best!"note Sei ippai, ganbaru wa!". Also, Peach, Berry and Pine's personal attack will always begin with "Bad things, bad things, go away!"
Mad Libs Catch Phrase: Most of them aren't said phrase to phrase, but has variations like "I'll do my best (not) to X!", "We'll get our happiness!", "That's perfect!", "I believe that X..." etc...
Westar: WILL NOT GO AWAY! *Nakewameke smacked Peach mid-sentence*
Kaoru-chan, the doughnut store owner, has a signature laugh "Guha!" which became his Catch Phrase. Played for Laughs during the "Freaky Friday" Flip when the Precures think he's okay when he laughed like that, not noticing that it's actually a bullfrog that got switched with Kaoru-chan, making the same sound.
Borrowed Catchphrase: In the final episode, Miki and Inori switch their catch phrases, while Setsuna and Love do the same for their own.
Combined Energy Attack: While not precisely an attack, the Cure Angel transformations are essentially caused by this. The Cures' ultimate attacks, Loving True Heart and Loving True Heart Fresh, are straight examples of this trope.
A villainous example occurs in the movie, which allows the villain to assume his One-Winged Angel form.
Dancing Theme: This was the series that kick-started the trend of including 3D dancing themes for the Closing Credits in all subsequent Pretty Cure series.
Darker and Edgier: The series can get rather dark and frightening at certain points, or as dark and frightening as a show for little girls is allowed to be. The events of the mid-season arc, the implications of Labyrinth in general, and pretty much everything Northa does come to mind.
Debut Queue: The introduction of the Cures. It's averted during the power-up spree; not only does Inori get her Mid-Season Upgrade before Miki, but the upgrades do not occur in sequential episodes.
Disney Death: Setsuna is resurrected as Cure Passion, and later in the series, Westar and Soular prove that you can, in fact, survive being sucked into a black hole. Guess the only one of the four cardinal directions villains whose death is going to be permanent is Northa's.
Eye Catch: Notable in that Chiffon's different costumes seen in one of the eyecatches actually appear in the series proper.They're seen at the begnning of episode 18, with the same music as the eyecatch. It turns out to be part of Miki's Midseason Upgrade...and Chiffon's bear costume actually plays a role in the story of the episode.
Face of a Thug: A variation. A very stern looking elderly woman runs a candy store in Clover Town. We see her give out quite a bit of free candy.
Fanservice: Episode 2 gives us a brief Shower Scene with Miki. Probably the only one we got in the whole series.
Frilly Upgrade: Cure Peach gets these after transforming into Cure Angel in the movie... and eventually, the rest of the Cures get them as well, after accessing their own Cure Angel upgrades during the penultimate episode.
Hotter and Sexier: Mildly. As this is the first Precure series that attempts to broaden the audience range, the art style for this season gave the female characters more visible breasts. There isn't that much of a difference, though, and for the most part, the female characters are still conservatively dressed.
Informed Ability: Played with. In the 'specialty'-assigning episode, whereas we get stuffs like Peach specializing in punching, Berry specializing in kicking, Pine specializing in stamina, Passion specializing in speed/dodge, kind of make sense at first. However, each Cures have been known to use all four traits sparingly. The reveal of that specialty-assignment also end up causing a Crippling Overspecialization and caused the Cures to fare badly, until Miyuki tinkers things up to make them realize that the Aesop is the usual 'teamwork' and synchronizing their hearts with those specialization which granted them Lucky Clover Grand Finale. And yet in said attack, none of the 'specializations' mentioned shine on.
Mistreatment-Induced Betrayal: Double subverted. Eas receives a letter declaring that she's fired and that her allotted lifespan is going to run out. Instead of running to Love for help, she becomes more determined to defeat Love before these "strange feelings" of friendship and self-worth that the Cures give her take over, so that her bosses will change their minds about her having become useless. However, Eas gives up in her fight against Peach, her bosses kills her anyway, and Akarun (the red key sprite) brings her back to life as a Cure. Disgusted with her previous actions, she eventually joins the side of good.
Monster of the Week: Nakewameke, which abandon the more or less freeform look of previous MOTWs in favor of a more natural-looking appearance, while still being will-the-Precure-please-get-giant-robots-already big. It gains a powered up version called Nakisakebe in episodes 19 through 22, before being replaced by Northa's Sorewatase monsters late in the series.
The Movie: The Kingdom of Toys has Lots of Secrets?!
Non-Serial Movie: Technically, the movie falls under this trope. It was released after episode 38 aired. However, in a case of Early-Bird Cameo, Usapyon makes a brief appearance in episode 26 and the Toy Kingdom appears in episode 35. The Toy Kingdom is later seen again in episodes 45 and 50, and and the Cure Angel transformation appears in episode 48 as the Eleventh Hour Superpower. As such, the movie can be considered canon.
Soundtrack Dissonance: Early on the movie, happy music plays as Love and friends had their fun time in Love's house, and occasionally switching into children losing their toys and crying... all while the same happy music plays.
Special Guest: Episode 27 features a town festival featuring the manzai duo Audrey. The pair are sponsoring the manzai contest that the girls accidentally enter, and later use their Boke and Tsukkomi Routine to actually help the Cures defeat the Nakewameke.
Spell My Name with an S: Is it Westar or Wester? Soular or Souler? Northa or Norza? Tart or Tarte? Despite there being trading cards that show some of those names, the fandom still can't seem to come to consensus about which spelling is correct for any of them.
Episodes 19 - 26: The Setsuna/Eas subplot becomes the focus of these episodes, climaxing in Eas's transformation into Cure Passion in episode 23 and her joining the Cures in episode 24. The arc is then capped off with two Setsuna centric episodes.
Episodes 34 - 37: The Reveal of Infinity, the introductions of the Clover Box and Northa, and the Pretty Cure's new Mid-Season Upgrade are all part of this single story arc.
Episodes 42 - 50: The finale.
Taking You with Me: Moebius rages at the fact that he cannot control the Cures and decides to blow himself up with them inside. Luckily, they're bailed out by Chiffon just in time.
Theme Tune Cameo: The second ending music is used repeatedly during the series, and the first ending music is the song the Trinity group dances to in the first episode.
Theme Naming: Jumping on the previous season's bandwagon, not only the mascots are named after food, but the Cures are as well. Four of the villains are named for directions (Northa, Eas, Soular, and Westar), and two of them are name for orientations - Moebius and Klein are taken from "Moebius strip" and "Klein bottle"
You Are Number Six: The citizens of Labyrinth are all numbered; although they don't use those numbers as names, Eas is addressed by hers in her letter.
You Gotta Have Blue Hair: Miki, more like bluish-purple. Also, her brother Kazuki, and villains Wester and Soular when transformed. Setsuna, in every form, can also count, although in civilian form it could be considered as stylized black.