These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Crowning Moment of Awesome: Coco's jailbreak and conversion of Sara without her pearl in the manga, and the Black Beauty Sisters' turning on Michel just before they die in the anime.
Everybody Remembers the Stripper: In volume 1's side notes, the author comments that, although chapter 3 introduces Rina and Yuuri, the only thing people seem to want to talk about is Kaito's Shower Scene.
Evil Is Sexy: Gaito, The Dark Lovers, Black Beauty Sisters, Sara, Michel and the Winged Ones.
Fan Dumb: Oh, so much. The amount of fangirls who declare Lady Bat's maleness (despite the blatant male chest) as Canon Discontinuity must be seen to be believed.
Germans Love David Hasselhoff: This show has a surprising number of fans in the West, which begs the question why no TV station wants to air the show.
Strangled by the Red String: Caren with Subaru, an anime-only character probably introduced only so people would stop slashing her with her sister.
Viewer Gender Confusion: Lady Bat, although officially male, causes a lot of confusion between fans.
What Do You Mean, It's for Kids?: The more suggestive and bloody manga is rated "13+" in North America, where the Animation Age Ghetto compels manga publishers to put ratings on their books, yet it was originally published in Nakayoshi, a magazine for little girls.
Woolseyism: The Italian dub. The voice acting is great, the songs are possibly, even better than the Japanese ones. They completely substituted J-pop music, to much more pop-rock, and rewritten the lyrics to match the new song. Checkitoutyourselves.