Yes it's mistranslation apparently
hello! wanted to add my 2 cents as a chinese speaker, the phrase 怪你脸黑 directly translated does mean "blame your face for being black" but it actually means "its your fault for being in a bad mood". its a figure of speech in the chinese language and isnt inherently racist. in fact, the language commonly uses color to describe emotions, like red is used for anger/embarrassment, white is used for fear etc. hope this clarifies!ヾ(❀╹◡╹)ﾉ~
Oh okay but they shouldve add that note
To avoid misunderstanding
Such a blatant racist Remark
Ive read the novel but i cant seem to remember reading something like that... i hope its just mistranslation and even if it is why didnt translatot changed it