Chapter 2 - The origin.

HP x DxD: That's not Wizard Magic!

I Found Your Shadow in My Pocket

Marked By Midnight Fated To Fall(will be moved to a new link)

The Nameless One — Multiverse Traveler

HP: The Son of Tom

Hogwarts: Sorry, I Just Want to Study

A Horcrux's Fate

Harry Potter: I Am Snape