Harry Potter: the Forgotten Successor

Traveling into the world of Harry Potter, he became the son of the unknown Evan Rozier. With no identity and no admission notice to Hogwarts, he could only live with the house elves in the dilapidated ancestral home. I thought my life would only be buried in the dust of history, until the mysterious "Soul Book" handed down from my ancestors appeared in front of me. It knows everything, including lost ancient spells, forbidden potion formulas, and even long-unknown secrets of the magical world. The most unexpected thing was that it claimed to be the Horcrux of "Salazar Slytherin", and the boy in front of him was the true successor of the Slytherin bloodline.