Mai-Otome/YMMV

Anime

 * Alternate Character Interpretation / Base Breaker: Nina Wang: Girl who always did her best only to get manipulated by Nagi and Sergay, tragic figure who has good intentions but started down a dark road due to a few critical mistakes, or completely and utterly amoral individual who is willing to commit mass murder for the sake of her incestuous love for Sergay?
 * Big Lipped Alligator Moment: Shiho's dream sequence in episode 21. Made even more disconcerting by the fact it pops up in an otherwise tragic episode.
 * Complete Monster: Tomoe is probably the most evil character in the Mai franchise. Nagi also becomes one in the second half, once he emerges as the Big Bad.
 * YMMV considering in later episodes we find Nagi
 * Crowning Moment of Awesome: During the finale when
 * Die for Our Ship: Mahya. This is more understandable than many examples, as she deliberately interferes with Akane and Kazuya's attempts to have sex (instead of merely being someone either one could be or is interested in), but she still gets a lot of hate for interfering with the couple.
 * Draco in Leather Pants: Nina. Despite her detractors, she still has fans willing to overlook or excuse her actions in later episodes.
 * Ensemble Darkhorse: Erstin's unexpected popularity among fans of the anime led to her.
 * Jerkass Woobie: Mimi is not the most pleasant individual, especially considering that she's willing to ], but her backstory (her father losing his job, becoming an alcoholic and dying) are quite tragic.
 * Fanon Discontinuity: Those who take the series seriously tend to ignore what little "plot" there is in Mai-Otome Zwei as much as possible, and advise others to do the same.
 * Les Yay: Lots.
 * Natsuki and Shizuru.
 * Arika and Mashiro have a bunch of moments together in the later episodes that border on romance scenes where they encourage each other to keep going.
 * Magnificent Bastard: Nagi. It's hard to tell exactly when he started plotting, but in the end he was able to
 * Moe: Erstin
 * Moral Event Horizon: For Nagi, the point where . For Tomoe,.
 * Portmanteau Couple Name: "ShizNat" is the most popular pairing among the fandom.
 * Rescued from the Scrappy Heap: Shiho may still be something of a brat, but thankfully she shows no traces of her My-HiME counterpart's clinginess.
 * Though still not an altogether nice person, Juliet Nao Zhang is a far more decent human being than her My-HiME counterpart.
 * Popular as she is, Shizuru's actions in My-HiME didn't sit well with some people. Mai-Otome's Shizuru is considered a lot cooler.
 * Saved by the Fans: The popularity of Nao and Shizuru's "Earth" incarnations prompted their return as heroes in this second season.
 * The Scrappy: The two characters subjected most to this are Tomoe and Sergey. Which one is more hated depends on what community you visit.
 * Tomoe: Her general disregard for the lives of others, coupled with very little motivation beyond wanting to get into Shizuru's pants has drawn the ire of a lot of fans.
 * Tomoe does actually have one other main motive, she hates Arika because Shizuru notices her, which, actually, is probably worse.
 * Sergey: His relationships with Arika and Nina (especially Nina) have given him a reputation as a "creeper".
 * Selfish Evil: Tomoe doesn't have any particular loyalty to the rest of the villains, but goes along with them to get together with Shizuru.
 * Squick: See above entries.
 * Tear Jerker: 's death.
 * Just try to watch the scene where without crying. Just try it.
 * Aoi.
 * Unpopular Popular Character: Shiho is considerably better liked by the fans than her HiME counterpart, but it’s revealed in the sound dramas that she is by far the least popular Otome among those that Backstage sells merchandise for, especially after her fairly humiliating outcome from the incident in the pool (which was mostly her fault).
 * Viewer Gender Confusion: Gal is female, but given that she's a Cyborg and her voice is distorted, it's hard to tell.
 * Villain Decay: Despite often proving a threat to Arika's Otome career and life, in Zwei, . Ishigami also gets this, as his My-HiME incarnation was essentially responsible for setting the bloodshed of the last 10 episodes in motion, while in Zwei, the citizens mock his attempt to run against Yukino.
 * Wangst: Some of Nina's crying post-Face Heel Turn can come off like this.
 * The Woobie: Erstin..

Manga

 * Complete Monster: Sergay, who is the Big Bad and is drastically different from the anime.
 * Evil Is Sexy: In the manga,.
 * Fan Nickname: Manshiro, to the point when The Other Wiki uses it to refer to the main character of the manga.
 * Idiot Plot: The Arashi plot can basically be summarized as "Garderobe is bought by a crooked noble and the Otome turned into Go Go dancers, but no one seems to think that the most powerful institute in the world needs to be rescued." Yeah.
 * Gets even worse near the end, when we are forcibly reminded that many of the Otome have some very wealthy, powerful relatives (They are eventually saved by Natsuki's mother. You know, the one who owns a country?!) who could have resolved the entire situation in ten minutes, yet nobody ever asked them for help.
 * Natsuki argues that Garderobe, an international organization, can't have deep ties with a single country, but her mother disagrees.
 * This goes double for the Super-H extra which came with Arashi, which basically boiled down to justification for fanservice.
 * Moral Event Horizon: Most of Sergay's actions after his being revealed as evil qualify, including.