|Hair||Blond, Long, No Bangs, Parted in Middle, Twin Braids|
|Body||Pale, Slim, Young-adult|
|Clothes||Brooch, Cravat, Glasses, Hairpin|
|Visual novels||Side character - Area-X|
Side character - X-Note
Acia is one of the teachers in Xen Institute. According to Yuon, she was one of the school's founders along with Essi's mother. Due to this, Yuon assigned Essi to class 2A--- the class that Acia teaches.