Audience-Alienating Ending: The original manga ends with Hatsumi getting back together with Ryoki, and this being treated as a happy romantic ending. The problem is that Ryoki is such an extreme example of a Fetishized Abuser who at one point outright tried to have her violently gang-raped that many fans ended up despising him. Meanwhile, the equally screwed-up Azuza completely regresses on his Character Development, while Shinogu, Hatsumi's genuinely nice adoptive brother who is considered the best love interest of the three, is left behind to become a monk. The resulting backlash was such that the official S novel has Hatsumi change her mind and get together with Shinogu after all.
Base-Breaking Character: Ryoki. Some fans love him and find him a great love interest for Hatsumi, and are happy with the original ending where she gets back together with him. Others consider him an extreme Fetishized Abuser and flat-out despise him for it, hate the original ending, and prefer the novel ending where Hatsumi gets together with Shinogu instead.
Die for Our Ship: In contrast with the below trope, not a few people would love Ryoki to drop dead... Though it's not always because they want him to die for their ship. Sometimes, they really just want him to drop dead because he's an asshole. Even people who don't ship Hatsumi with any of the characters still think that she could find someone better than Ryoki. Who can blame them?
Draco in Leather Pants: A lot of fangirls are willing to overlook Ryoki's near-sociopathic behavior because of his good looks. Azusa, as well - no matter what "Dark and Troubled Past" he had, it's disturbing to justify his manipulation and attempt at having Hatsumi violently gang raped.
Esoteric Happy Ending: So Hatsumi decides to stay with Ryoki in spite of his verbal and emotional abuse of her because she thinks that marriage will make him nicer to her? Azusa goes back to being a vengeful bastard after learning that Ryoki's father was responsible for his mother's woes? Shinogu abruptly decides to go off and become a monk after realizing that he'll never get Hatsumi? And we're supposed to believe that all this makes for a happy ending? The real happy ending, however, happens in Author's Saving Throw.
Fan-Preferred Couple: Some fans prefer Hatsumi to have ended up with Shinogu, who was sensitive and gentle and wanted the best for her, instead of the possessive and often abusive Ryoki. And in the novel, they do.
Nightmare Fuel: The story is so fucked up you'll have a hard time forgetting it.
Too Bleak, Stopped Caring: One of the few shoujo manga that fits this trope. Every character is a jerk or an idiot, and nobody receives any major character development (in fact the opposite seems to happen). The Esoteric Happy Ending doesn't help, not even when the novel ended up fixing it.
What Do You Mean, It's for Kids?: This is a manga with lots of sexual blackmail raunchier than most MTV shows and getting a 16+ rating for the American publication (with a few additional disclaimers about underage drinking and other such material), points towards being a josei, but somehow ran in Betsucomi, a shoujo magazine originally targeted to elementary and middle school girls (though there has been a bit of an aging up of the magazine in recent years).
