Guess We're Stuck With Each Other - Sirius x Hermione

The Ministry's new laws to repopulate the Wizarding World mean marriage is a necessity. But Hermione doesn't want Ron. Reorganising her life, she makes some unusual friends in some unusual places. With a completely spontaneous marriage, Hermione Granger and Sirius Black try to make it work. After all, they're only the most opposite people in the world.