So that means i need to make MC transgender then
Oh, sorry, for this specific path, you do need to play a feminine character, HOWEVER, if you specifically play a masculine character, at -5% femininity you will be able to just interact with the PC parents without playing through this sequence, however it won't really complete this objective as it's sort of the setup for the feminine side.
So you can do the content with a masculine character, this objective specifically is just the feminine path introduction to the parent's content, sorry for the confusion.