Novel info
Hogwarts: I am the White Lord

Sebastian Swann, an outstanding graduate of Slytherin, heir of an ancient alchemy family, and the richest man in the magic world. 12 years after graduation, he returned to Hogwarts as a professor... Snape: "Sebastian, what is the reason why our richest man chooses to be a small professor in Hogwarts?" Sebastian: "To make Slytherin great again!" Snape: "Tell the truth..." Sebastian: "To make Hogwarts great again!... Put away the truth serum, Severus, you are so boring!" Snape: "Tell the truth!!!"...