Harry Potter and the Black Blade

Fleeing from the Dursley during the Summer Holidays, Harry soon crosses paths with two individuals from another world entirely. Taking the boy under their protection, Draco of Maribor and his sister Rhaenys of Zerrikania then take the steps to make sure that anyone who wishes harm upon Harry will be punished for it. Harry Potter/GoT/Witcher multicrossover Witcher!Aegon VI