Take JK Rowling's Harry Potter Universe, add Neil Gaiman's Death of the Endless. Okay its not exactly Master Gaiman's Death. But I am not Neil Gaiman, so there is that. This is my version of what Harry Potter and his World would be like if Death was his personal friend, his big sister

Death's Child : Kamień z Nieśmiertelny

Yes I am aware that the polish is bad and the grammar is horrid in the title. It was as close to Stone of the Immortal as I could figure out

Fandom

Harry Potter

Neil Gaimen's Death of the Endless

Era

Hogwarts Year One

Age Rating

Honestly I think this is Teen. But looking at the normal Ratings for Books and Fanfiction, I am going to have to up it to M, due to violence.

Warnings and Alerts

Alternate Universe

Out of Character

BDSM themes

Feudalism