@me474 plenty of reasons really. Most obvious being that necromancer is less than respectable if our alchemist's immediate assumption that he was going to be robbed.
Well it's a reclusive but powerful guy with a japanese name that has a passion for cooking and whose specialty is japanese dishes loved by the local people, if that's not an isekai imma eat my dong
@Rift We considered other names.
The idea is that it's "The Necromantic Maid", as in, "The Maid" is a Necromancer.
Not that "The Necromancer" is a Maid.
"Necromancer" here is an adjective, with the noun being "Maid".