Disclaimer: I do not own Harry Potter, Slayers, Fullmetal Alchemist, Katekyo Hitman Reborn, Naruto, or any of the other story histories I use unless I specifically identify it as being mine.

A.N. The prologue is going to be broke down into short lives that Harry has lived, to provide some background. Chapters will get longer as the main storyline starts.

LIST of Lives Planned:

Roy Mustang (alchemy) (written/typed/posted)

Gourry Gabriev (swordsplay) (1/2 written)

Rock Lee (taijutsu)

(maybe) Fujioka Haruhi (muggle studies/real life experience)

Suggestions welcome; one character per "world" and it has to at least vaguely make sense. It can't be someone with obvious family connections that would have been hard to fit a character in (such as Ciel Phantomhive) and it has to be a series I at least vaguely know.

Every character is going to be more and more !BAMF! until we get to Nana. They can be female characters.

In the end when he chooses to become Nana its because she wants a peaceful life of raising a family. (Good luck, Nana.)

Prologue: Part 1: Roy Mustang

The Master of Death had gone by many names. Many, many names.

He had been Roy Mustang, a young general with a natural affinity with fire. He did not want to be a hero, but did his best when tossed in the middle, regardless of his wishes.

After the great evil was defeated, and the country saved, he spent a great deal of time and effort and time reversing the spiritual damage that trapping all those souls in the Philosopher's Stone for all that time had caused. It was his obligation; the fact he did not know about it lay purely on the shoulders of Truth.

Interfering with the Shinigami's duty was bad enough, but destroying the balance between life and death was a great sin, especially for a being so very concerned with the Equivalent Exchange. The reason the evil had been so able to violate the boundaries between realms, was the fact there was a great spiritual imbalance.

The Master of Death was pissed! The look of bewildered horror on the face of Fullmetal when the superior officer that he had so disrespected when Roy had began easily thrashing Truth, and winning..well that was just icing on the cake!

With his over-endowed metamorphmagus ability, no one discovered he wasn't truly aging. His "blindness" gave him the perfect excuse to retire. (Not that anyone close to him really believed he was crippled!)

He began researching alchemy deeply; His extreme control over fire was enough when just playing around, which was what any battle with normal humans was, but when things like homunculus and self-made immortals showed up… Because the Philosopher's Stone was an item made of alchemy, alchemy had to unmake it. The atrocity like the Philosopher's Stone would never happen again, if he could help it. (But how he grew to loathe Nicholas Flamel.)