Can someone please tell me how to change the "title" of me the MC and the FMC?

For example I am "Friend" and she is "MILF". That is something that we get to choose at the beginning of the game but it didnt know that I was going to end up playing the game for so long and now I hate that it always says MILF and Friend. In game there seems to be no option to change it but maybe something can be done in the game files? Please someone help me <3