Locked Out of the Loop: She's the only one of the two duos that has no idea or has suspicion that Kaoru and Michiru are Dark Fall warriors. But it's because of that, she had no doubt on each other's intentionnote Mai suspects the twins to backstab them when she finds out until she sees Kaoru saves Minori, while the twins think that the Cures luring them into a trap by false sense of security, only seeing her friends as awkward, but kind-hearted people.
Malaproper: Whenever Shitataare is involved, often with hilarious results.
She does the same to Karehaan too.
Meaningful Name: "Saki" comes from the Japanese verb "saku", meaning "to bloom", while "Hyuuga" can be translated as "facing the sun"
Hyper Awareness: This girl practically has a photographic memory and good eyes to notice that two people flying under moonlight hundred meters away are her classmates.
The Klutz: Not her, but her mother. She's an archaeologist that often has sleep attack in the middle of doing something because she's losing sleep from her work. Mai usually is the one who takes care the brunt damage of her shattered plates and scattered papers.
Because You Were Nice to Me: Their borderline Undying Loyalty and insistence to save Michiru and Kaoru from the Dark Fall; even though they directly responsibled for destruction of their Fountain, is because the twins saved them from a falling tree, spared their lives, and allowed them to keep staying in the Fountain even though their job includes the fairies-killing, long before their Heel-Face Turn.
The Comically Serious: This guy is almost has no nonsense, except when it's regarding his nickname Karecchi. He allows almost everyone to call him that.
Enemy Mine: He dislike Moerumba (mostly because their elements are incompatible and Moerumba rubs him the wrong way, but as long as he can defeat the Cures, the combination is simply devastating. The Cures simply survive because their victory is almost ensured, Karehan and Moerumba start fighting among each other again, forcing Gohyan to retreat them both.
Leeroy Jenkins: Basically his Fatal Flaw; he's too impatient to attack strategically (even Kintolesky is better at this than him), using two Uzania at once to overwhelm the girls in his arc's last episode. As warriors of Dark Fall die when they used up all their Miracle Drops to make Uzainas and taking too much damage, this is an incredible stupid move as the Cures' finisher is Twin Stream Splash... and this happens again when Gohyan resurrects all the generals. He's too much of a glory seeker that he ignores Kintolesky's warning and charges head on to his seemingly defeated opponents, only to get blasted at point blank twice.
Emotionless Girl: Kaoru at first. Michiru is friendlier from the beginning, but even she has her moments.
Empty Eyes: Not as dull of a color as most other examples, but there is a sense of lifelessness in their eyes. It's worse when they fight the Cures, as it makes them look inhuman. The glossy look slowly disappears as they make their Heel-Face Turn bit by bit until the eyes are completely normal-looking at the last few episodes.
Heroic Sacrifice: At the end of the Final Boss Preview against Akudaikahn, they undergo this when they save the Cures by sending them away from Dark Fall. It turns out they didn't die, but were sealed away.
Meaningful Name: "Kiryuu" is written with the character for "fog" and another character that means "life" or "birth". Michiru means "to be full" as in a full moon, while Kaoru means "fragrance".
Sibling Yin-Yang: Exist in subverted archetypes; Michiru might be the friendlier of the two but she's actually a type B Stepford Smiler who doesn't understand the reason of such novelties, while Kaoru is more prone of Brutal Honesty because she's insightful of her surrounding and doesn't see the point of faking her concern. Then they play it straight; when they face their inevitable fight with the Cures, Michiru quickly despairs and goes into a berserk denial, while Kaoru notices that fighting is not something that they want, makes peace with her contradicting existence and stops her sister.
Enemy Mine: The reason why she invokes I Was Just Passing Through, Thinking Out Loud, and open a portal directly into Gooyan's lair; she's so furious that Gooyan is one step away from her by capturing Flappy and Choppy, she decides to help the Cures reclaim their fairies.
Lady of War: Ignoring her personality, she's actually a quite graceful fighter. She opts to dodge any attack with twirling motions and redirects physical attacks with her hands, not unlike Cure Egret herself. Most visible in DX 2, when she dodges Prism Chain with a simple twirl before charging at Precure5 team, while Moerumba jumps away from the attack before it connects.
Blue and Orange Morality: Due to his Blood Knight tendencies. Early on he even says Earth isn't so bad, but he simply does not comprehend that not everyone likes fighting, or that there are more important things than victory.
Dumb Muscle: A subversion. He's not stupid, but he dislikes using strategy. In fact the first time he tries using strategy he steals Saki's school festival costume, uses it to surprise Mai...and that's it. He even admits he didn't see the point. But this doesn't stop him from using Reverse Psychology later on to lure Saki and Mai into a trap.
Abusive Father: Sending your daughters-except-in-name into Fate Worse Than Death at the bottom of a lake after you blasted the hell out of them when they weren't fighting back really grants you the title, Akudaikahn.
Super Toughness: In their first confrontation with him, Bloom and Egret try to physically attack him. They end up only hurting their own limbs. He also No SellTwin Stream Splash without much fuss, claiming that he didn't even use half of his power.
Truly Single Parent: At one point the Cures note that he's basically the Kiryuu sisters' father.