Bimbo best friend

Story: back during high school you had a friend named Thomas, he was short on money and after graduation heard about an offer. Go to this reformatory school for 6 years and you’ll get a prize, he spends 6 years at the school and he finally graduated, but they Brainwashed him and turned him into Tiffany and being your friend(and her parents not wanting to deal with bimbo shenanigans) she lives with you