@Sniter it totally makes sense to me, the Japanese doesn't have "L" sound, instead they use "R" sound, so in japanese Als would be written as "アルス" (Arusu) and this could also be seen as "Ars" too in some way, so if the author/artist doesn't write it in romaji or doesn't include any info or fact about the name, it becomes confusing for the TL. (I don't know how it's written in the original manga, I'm just guessing if the name is Als it would be written as "アルス")