- Cliché Storm: It seems that the series collects anime cliches about siblings, including Incest Subtext or relaxed Cool Big Sis. However, it is a surprisingly positive example for this trope, since the author mainly plays with them for laughs and fanservice.
- Harsher in Hindsight:
- In episode 1B, there's a scene where Shuu attempted to save Teru from a crash-landing Akane, but fell on the ground
. Normally one would think he twisted his ankle, but after the events in Episode 6A, it's more of a showcase of how Shuu "can't do intensive activities" because of his broken leg. - In episode 2B, Teru mentioned he promised he'd not use his Super-Strength Royalty Superpower recklessly. It may seem like a good precaution... but by Episode 11 it turned out such promises is out of a specific precedent. Namely, Akane accidentally destroying Karen's house when fighting off intruders. Especially when you consider Gravity Master can effectively create Super-Strength effects.
- In episode 1B, there's a scene where Shuu attempted to save Teru from a crash-landing Akane, but fell on the ground
- Hilarious in Hindsight: A character named Satou drowns Brother–Sister Incest ship between the noble siblings-protagonists. And that's not to mention that there is an accidental Casting Gag invoked by Les Yay between Kana Hanazawa and Saori Hayami. Hilarious!
- Incest Subtext: See its own page.
- Incest Yay Shipping: Part of the audience greatly enjoyed the idea of Shuu/Kanede that there was great disappointment and the emergence of strange theories that Shu will develop a Brother–Sister Incest relationship with his sister behind his wife's back.
- Les Yay: Not the focus of the series, but still exists:
- Karen nosebleeding, together with the boys, over a panty shot of Akane's in Chapter 12/Episode 4A.
- Hikari has been pretty close to Sacchan in Chapter 19/episode 7B.
- Misaimed Fandom: Even though this work does not center around Incest Yay Shipping and has never been promoted as such, many people who were initially interested in this series because of the nine siblings as the Main Characters and a large proportion of the Incest Subtext between them, Many were surprised that Shu does not view his twin sister as a Love Interest, and the entire romantic line was reduced to a small subplot.
- Unpopular Popular Character: Shuu is never popular in-universe; he is consistently dead last in polls. However, at least among the western viewers he is the most popular character, due to his refreshingly straight response to Hana's Love Confession in Chapter 8/ Episode 2B and his past with Kanade and Akane in Chapter 29/Episode 6A2.
