Laurens lives through the war, but since Hamilton has built a family and a respectable life he doesn't want to interfere with, he stays away from New York for years. But when unexpected circumstances bring him there, he finds himself knocking on Hamilton's door - only to meet Eliza Hamilton. [AU, Hamilton/Laurens, eventual Hamilton/Laurens/Eliza]

Every friendship has its starting point. In the case of Alexander Hamilton and John Laurens, that starting point is a punch in the face in the aftermath of their first shared battle.