- Character-Specific Pages: Catarina Claes
- The Danza: In an example that doesn't apply to the series as a whole; Atsuko is the only character who is directly shown singing during the opening, which is rather appropriate considering the fact that it's also the name of the person actually singing it.
- Defictionalization: The Blu-Ray collection features a demo version of Fortune Lover, the game that serves as the setting for the series.
- Fan Nickname:
- Bakarina, a nice portmanteau of "Baka" (idiot) and Catarina. Becomes an official nickname for the series itself when J-Novel uses it as shorthand for the series on their site. Black Hole is another name that gets thrown around due to her attracting everyone that gets close to her and being incredibly dense.
- Bikarina, is also used, because Catarina ends up being shipped with everyone, regardless of their gender.
- The Japanese fanbase has BGM for Alan, due to him being an Elegant Classical Musician but also because his Always Second Best tendencies relegates him to be functionally in the background.
- GHL, short for "Green Hand Lesbian" for Mary Hunt (in the Japanese fanbase), after the "green thumb"note remark Catarina (Alan in the original game) made to her.
- Shining Les for Maria Campbell, also courtesy of the Japanese fanbase, due to the nature of her magic.
- As both the original title and the official English title can be quite the mouthful, fans typically shorten it to Destruction Flag Otome. With the release of the anime, Hamefuranote has emerged as another way to shorten the name.
- The Verge of Destruction Arc spin-off is often called "Hard Mode".
- Lysithea for Sophia, namely due to their appearances being similar.
- Fountain of Expies: This series was the Genre Popularizer of the "reincarnate in an Otome Game as a villainess" sub-genre of isekai. As such, many of the characters have spawned carbon copies, in particular Catarina and Maria. One of the most noteworthy examples being the Beware The Villainess, which copies the basic premise almost wholesale and even has expies of Geordo, Keith, Alan and Nicol as well.
- Playing Against Type:
- Although not the first time, in the original dub, Yoshitsugu Matsuoka is known for playing harem protagonists into the point of being nicknamed as "Harem King" by the fandom. Here in this series, he's reduced to being a member of a harem (Nicol Ascart).
- In the English dub, Melissa Fahn is more commonly known for being either stoic or bitchy action girls, one of her more famous roles notwithstanding. Here, she plays Maria Campbell, who is sweet, nice, and as traditionally feminine as can be.
- Relationship Voice Actor: Catarina Claes is the third role Maaya Uchida and Jeannie Tirado shared after Koito Minase and Norman.
- Sleeper Hit: The show came out of nowhere to become the smash hit of the Spring 2020 season. At first, many people who read the synopsis before release dismissed it as just another Isekai with a really silly premise. However, after the show was released, fans began to fall in love with the wholesomeness and cuteness of Catarina's character, and word-of-mouth quickly spread about its rare mixed-gender harem premise. It became so popular that only a few weeks in, all of Catarina's ships were 7 of the 10 'best couples'◊ in a weekly survey by Anime Trending. It helped that it was one of very few anime that didn't get delayed due to the COVID-19 pandemic. A second season was thus announced before the first had even finished airing.
- Talking to Herself: Maaya Uchida and Jeannie Tirado are not only Catarina Claes but also Happy Catarina, Chairman Catarina, Studious Catarina, Fearless Catarina, and Spineless Catarina, the five other aspects of Catarina in her Inner Monologue.
- The Wiki Rule: My Next Life as a Villainess Wiki.
Trivia / My Next Life as a Villainess: All Routes Lead to Doom!