Rose Dursley: The Girl Who Lived
35 parts Complete Harry Potter, the boy who lived. The most famous boy in the wizarding world has to be hidden. After his parents are killed, Dumbledore has to make sure Harry is never found by Voldemort. So he uses powerful magic to transform Harry into a girl.
Now called Rose, she is brought up by her aunt and uncle, the Dursleys. Dumbledore also changes their memories so they believe that Rose is their own daughter. As she grows up, Rose learns nothing about the wizarding world, or her true identity. That is until she turns 11, and a letter arrives to invite her to Hogwarts.
As Rose gets older, she learns all about magic, but she also learns more about her own feelings and starts to question her identity.
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A/N.
So I had the idea of writing a version of the story where Harry was born a girl, but there are loads like that already, so I thought I would try instead doing a kind of LGBTQ+ version where he is transformed and then has to deal with experiencing this difference of gender identity. But I'm not very knowledgeable about all the gender identity stuff, so I'm sorry if I get anything wrong, and please feel free to message me so I can try and fix it.
Also, trigger warning; the story gets a bit dark after he comes out as trans male. He has to deal with the conflict from other characters that don't accept his identity at first. So some of the mean ones are transphobic and misgendering etc. But I'm going to let you know now that there will be a happy ending eventually, so hopefully it won't be too hard to get through the difficult parts.