BUR #19119 has been approved by @evazion.
mass update favgroup:25832 -> char:akemi_homura_(black_dress)
create implication akemi_homura_(black_dress) -> akemi_homura
As of today, the black funeral dress from Rebellion got its official name in Magia Record: "暁美 ほむら(黒ワンピース)" ("Akemi Homura (Kuro Wanpiisu)"), as the name of her L2D model. Meaning - the costume now has an official name, and thus, have its own chartag.
I believe this is a fitting solution - especially given that not all artworks show enough of the body to determine it's a dress, thus technically not being supposed to be tagged as a dress.
I would also like to discuss a different costume first featured in an earlier installment, that was only explicitly named years later in Magia Record - Akemi Homura (Megane ver.) (also known as Akemi Homura (Glasses) in the NA version). I believe the tag should also be considered, but there's a large "however"...
The situation with Megane ver. is a little more complicated - while it's true it exists, ultimately, that costume's only difference from regular Homura is the presence of those red glasses and twin braids, and a different personality (which may not always show in fanart, anyway). By strict definitions, it probably shouldn't be tagged on posts that display those traits, but don't technically fall under the MR unit, like post #2964849 or post #2116447. Especially given that just two elements don't make it a full costume...
That being said, there's also art that displays Homura with either a braid or glasses, without it being "Moemura" - post #2314034, post #1702383, post #1711274, post #4755787, somewhat validating that...
Should a chartag for this version of Homura also be created?