Part 3 of The Arithmancer Series. Hermione won the war, but her career as the world's greatest arithmancer is just beginning. Now, she has places to go, spells to invent, and a family to start. Oh, and a whole lot of dementors to kill.

Hermione grows up as a maths whiz instead of a bookworm and tests into Arithmancy in her first year. With the help of her friends and Professor Vector, she puts her superhuman spellcrafting skills to good use in the fight against Voldemort. Years 1-4. Sequel posted.