What happens when the brightest witch of the century asks the brightest witch of the decade to help her tutor her first years? War did not happen/Voldey does not exist, McGonagall is Headmaster, Hermione is 19 in her 7th year. Bellamione student/teacher slow burn, rated M future chapters.

Of course Snape would give Granger her first detention of her seventh year at Hogwarts. But where will that detention lead them? My first story, so sorry if it's not great!