The tag "caelica a mercury" is a misspelling of the the character name "Celica A Mercury ".
Tag name needs to be fixed to the real one.
Posted under Tags
I'm seeing a lot of the former on a cursory google search, official screenshot or something?
Well the novel translations also use "Celica" http://baka-tsuki.org/project/index.php?title=BlazBlue:Phase_0#Part_1