- Covers Always Lie: The cover depicts the guys in embrace with their female versions, because of earlier many mistakenly concluded that it is devoted to Half-Identical Twins.
- Ensemble Dark Horse: Arisada somehow, according to the author's comments in the manga.
- Family-Unfriendly Aesop: In episode 3, "Hanging on to your pride will only weigh you down. So to make life easier, sometimes it's just best to go along with what other people want."
- Ho Yay: The series is full of this, despite the fact that two of the three main characters have a heterosexual orientation, and one is at least on Bi the Way because of his ambiguous scenes (anime and manga clearly like to pair Yuujirou together with Tooru). However, it's hard to get rid of the impression that all the boys at school adore "princesses" not only because they look like girls ...
- Periphery Demographic: According to Tsuda in an author's note, she was surprised how many letters she got from girls telling her how much the men in their lives loved the series.
- Les Yay: Mikoto's sister seems so protective of his girlfriend and they are so close that it seems suspicious. The author's previous manga puts it into context.
- Moe: Almost the whole series is a delight of Dude Looks Like a Lady and Bishōnen.
- Retroactive Recognition: In the drama adaptation, Tooru has arrived, wants to know if he can real you in, has strength that will make you cry, and wants to know if he can defeat you, because he can't hear your answer!.
- Values Dissonance: In Japan, the series is intended as little more than a fresh and harmless Moe work about crossdressing guys. However, it's portrayal of the "Princesses" would be more likely viewed as objectification of transsexual people in the West, where due to the historical mistreatment of trans people, the act of crossdressing is generally treated more seriously.
YMMV / Princess Princess