Accidentally on Purpose

Albus and Rose become quick friends with one Scorpius Malfoy on the train (much to Ron's chagrin), while Fred and James live up to their names, finding themselves in Headmistress McGonagall's office more than she can keep track of. "What can I say, Minnie," James grinned. "Accidents happen," shrugged Fred. NextGen Hogwarts, main focus on year 5 and after. RW/SM and other pairings.