Harry (WIPWAW)

[Inspired by the SuperCarlinBrothers video "What if Petunia was a witch?", but with atwist] After the Obscurus inside of Petuina end her, destroys the house at the beginning of summer before 3rd year, Harry is basically forced by Dumbledore to live with Professor Snape, who was apparently previously married to his aunt and had a child with her. Harry had a feeling that this won't be a good summer... Or will it? [In this Au, Severus Snape has two kids: Scabios Snape (biological son, shoulder-length black hair and Heterochromia) and Lilith Snape (adopted daughter, bio daughter of Voldemort will dark eyes and curly brown hair, I dare you to guess why Snape named her that). Scabios is a month younger then Harry while Lilith is a year younger, so she's a year below them. The siblings are both in Slytherin and very nice to Harry. Scabios is a shy, quiet introvert who likes books and Lilith is an extrovert who loves to make people laugh. Harry loves his cousins, Snape is still harsh on him.]