The Chimney Sweep

When six-year-old Harry Potter finds floo powder while cleaning the fireplace, he is accidentally sent over to Severus's Snape's house, where he discovers that Snape is his biological dad, he has a half-sister, and Aunt Petunia has been abusing him all his life. It's almost too much for little Harry to handle. Can Severus help his boy heal from the traumas he's suffered?