Dumbledore's Blood Pact

Summer of 1899, Godric's Hollow.
The Dumbledore brothers Albus and Aberforth have been sent home from Hogwarts early, following the sudden death of their mother. Chained to the house and his ill younger sister Ariana, Albus desperately looks for a way to continue his magical education outside of Hogwarts and set out to become one of the greatest wizards of his time. Bored out of his skull, Albus surprisingly makes a new interesting acquaintance on his street. A young man of his age named Gellert Grindelwald who turns out to be a brilliant young wizard with lots of shared interests and enormous plans for the Wizarding World.