- Fan Nickname:
- In-Universe, Marie calls each of the capture targets of the second game by these.
- "Dark Olivia", for the Marie Route spinoff version of Olivia.
- Flip-Flop of God: Word of God said that Maries love for Leon, is platonic sibling love. In the Marie Route Side Story, she directly admits during a Battle in the Center of the Mind to being a bro-con.
- Life Imitates Art: Repeatedly, Leon reacts to the five romanceable cast praising Marie, by lamenting What Does He See in Her? The author, in various author's notes, interviews, and blog posts, laments the same thing, only about fans liking her instead.
- No Export for You: Its been announced that Seven Seas Entertainment will not be releasing the Marie Route Side Story internationally. Fortunately, there are fan translations for those chapters in multiple languages.
- Portmanteau Series Nickname: It is referred at times as Mobuseka (combining Mob and Isekai).
- Recursive Adaptation: Nicks romance plotline with Dorothea Roseblade originated in the spinoff Marie Route, before being re-adapted and expanded in the eighth volume.
- Staff-Created Fan Work: Marie Route Side Story is often described as an author-created fanfic, and the author described their one-off side story where Leon grew up in the Alzer Commonwealth like this.
- The mangaka in charge of manga adaptation of the franchise, creates plenty of drawings like this. Which sometimes get mistaken for canon.
- Trolling Creator: The outrageous scenes that end the epilogues of the later Light Novels.
- The Wiki Rule: The World of Otome Games is Tough for Mobs Wiki.
Trivia / Trapped in a Dating Sim: The World of Otome Games is Tough for Mobs