The Harry Potter Conundrum

This is Harry Potter fanfiction story!

Death always had a strange sense of humour. So when his Master was hit by the killing curse courtesy of his "best friends", he brought him back through time. To the one, he loved beyond everything but who had been ripped from him during the war.
What Death, however, hadn't put into consideration is that his Master would deem this a perfect opportunity to have some fun on his own. Not only giving Dumbledore a big fat SCREW YOU but also making things far more complicated.
However, the peace is only the calm before the storm as bigger events are set into motion. Events that not only threaten the universe Harry found himself in but all of creation.
Oh, and Death loves scaring the living daylight out of everyone. Harry blames a certain fallen angel for that.

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This story is set in another universe similar to the one Harry came from. Similar but not the same.
Morally grey Harry Potter
Harry sides with Voldemort
Manipulative and Evil Dumbledore
Hermione and Ginny have gone completely crazy

Pairings:
Harry Potter/Severus Snape/Voldemort
Lily Evans/Barty Crouch Jr.
James Potter/Ginny Weasley
Luna Lovegood/Neville Longbottom
Fred & George Weasley/Bellatrix Lestrange