@JBBJSBB you did, but I'm gotta speak up for @alfirizkyr anyway. Whodunnit, Whydunnit and Howdunnit all have established spellings in English. I don't know if anyone lists them as legit words, but mystery lit types spell them that way.
And I'm on board with the 'it's her mom' theory. Especially...
Okay, here's my theory. Well, this is just me tossing around plot as a writer. I haven't read the novel (if one exists) so I don't know. I'm only spoiler tagging in case I happen to be right:
@Big--PP
no problem. Japan's got this:
boobs on snakes -> lamias
boobs on fish -> mermaids
boobs on spiders -> arachnes/jorogumos
boobs on birds -> harpies
The one thing I really hate with cooking-themed isekais is when the MC whips out a completely foreign (Korean or Japanese, usually) word for the dish name and nobody even thinks to question it.