Every witch and wizard leaves Hogwarts with one final gift. On graduation day, magic chooses a color—one that winds itself through their hair in streaks, tips, or hidden strands. Somewhere in the world, another soul bears that very same shade. A soulmate. Most find their match within a few years. Some wait a decade. Remus Lupin has waited twenty. By now, the dark crimson streak in his hair has become little more than a reminder of someone who never came. Until the day the graduating class of Hogwarts gathers one last time… and a single head of hair blooms the exact same shade. The last person in the world he ever wanted fate to choose.