- Fridge Logic: If the Muggle students of Binan know that they're school is constantly under attack, why do they continue to go there? This applies to the original series as well.
- Genius Bonus: The poses that the Defence Club strike during the opening spell out "HAPPY" in semaphore.
- Ho Yay: A series tradition.
- Ryouma's relationship with Kyotaro can be read one of two things: a mother hen and his lazy ward, or a frustrated man keeping his lover on the right path.
- Of all the knights, Kyotaro's the only one to comment on how soft Karls' hands were when he sealed his contract.
- In episode one, when he drops all those innuendos, is Nanao hitting on Ryouma or just messing with him?
- In episode four, Ichiro fondly remembers his first meeting with Nanao, and wrote in his dream for the future wanting Nanao to keep his eyes on him.
- Inferred Holocaust: A lot of boys at Binan are turned into food in episode 2 but there's no indication that they were turned back.
YMMV / Cute High Earth Defense Club Happy Kiss!