I... genuinely don't understand this comment. Cause you read a manga with a harem tag and you don't want the protagonist to end up with all 3 (or 4) girls? So you want it to have only one winner or even zero with an open ending (so the opposite of a harem)? It's more like the tag is applied way...
I could be wrong but looking at the raw, I feel like it's more of her speaking in kansai-ben than speaking formal. Maybe the translator didn't know how to show that change in another way?
For anyone who know, which volumes from the novels is that chapter adaptating? Since it seems there hasn't been a new volume since 2021 it was to know if there was much left