Charm - Harry Potter harem x OC

Disclosure

The OC comes from Beauxbatons, in this universe Beauxbatons starts teaching when the students are 5.
We start on third year but for the sake of lessening the inappropriate age gaps the golden trio generation will be aged up to 15, Bill will be 21 and Sirius 29 and we will pretend that it makes sense for the rest of the characters in between.

DISCLAIMER
I don't own anything of the original Harry Potter series (the characters, the plot) except for Charlotte and my added plot and perhaps other characters related to her.