Prologue - Dementor Attack

How was Harry supposed to know that collecting three certain artefacts was a bad idea? Or that Phoenix tears did not neutralise but merely counter acted Basilisk venom?
When he found out it was already too late. Way too late. In more than just one aspect.

xXxXxXx

"I'm sorry, Hadrian, I know you don't want me to do this. But you were never meant to be alone - separated."
He choked back his cries and screams and pleas to stop, because he knew it was too late.
His little moon smiled while blood flowed down her body like a river and magic swept around them, the very magic she's giving her life to.

Cross-posted on Ao3