Harry Potter author J.K. Rowling often uses Twitter to update Potter fans on the unwritten futures of her beloved characters. The author made no exception for the canonical first day of school for Harry and Ginny's son, James Sirius Potter. Good news: he's a Gryffindor. Meanwhile, the son of Lupin and Tonks, Teddy, is a jealous Hufflepuff.

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Check out Rowling's tweet below. It's nice to know that while the series may be over, Rowling still cares about updating fans.