Regulus does an illegal blood adoption on Harry, that's legal in America, which adds Regulus as one of Harry's bio parents. Lily is still his mother though and very involved as in his life.
Teddy, Rebecca, and Michael are Harry's cousins, Sirius is their bio dad and Remus did the same blood adoption, Remus was terrified of any of them becoming a werewolf, so like any other good husband Sirius volunteered in his place, they used a surrogate, NOT TONKS, whom they still keep in touch with.
Matthias James Charlus Potter-Black
15
@Mattblotter
Pureblood (Regulus did Blood Adoption)
Harry's Twin Brother
Rebecca Liliana Lupin-Black
15
@Becah
Pureblood (Surrogate used was a Pureblood)
Michael John Lupin-Black
14
@Mykey
Pureblood (Surrogate used was a Pureblood)
Hey Guys, this is the original author. I had to make a new account cause I was logged out of my old one. I took screenshots of my story and the first few chapters will be those screenshots, Thanks for understanding