Im feeling really dumb right now still dont understand does it just add the word onii-chan and some other japanese honorifics?
I though adding Onii-chan in mod description would make it easier to understand, my bad, anyway...
Short story short:
Natalie usually call MC Big-bro and her Older sister Big-sis.
Weeb patch just change a few lines to Onii-chan and Onee-san.
Long.... Zzz:
But it might be slightly outdated.
And by outdated I mean there will be sentences where MC call Flora by her name instead of mom.
I will either update it at a later date or remove it from download.