Till The World Stops Ending

Marauders Walking dead/apocalypse Au

Sirius Black lost his little brother a long time ago. Back when the world caved in and the dead rose to eat the living.
Though it still hurt a lot to think that his little brother was no longer by his side, he still had his other brother, his best friend James Potter to get him through the end of the world.
That was until his idiot best friend ends up getting himself taken by a hostile group whilst on a supply run.
Sirius will stop at nothing to get him back, and where ever Sirius goes Remus Lupin isn't too far behind.

Regulus Black doesn't feel much of anything anymore, doesn't let emotions control him, not since the death of his older brother. His group; the death eaters... their way of life doesn't care much for patience or virtue but when an old familiar face ends up in the penitentiary of his new home, it opens up a wound Regulus thought he'd laid to rest.
As irritating as the brown eyed boy may be, Regulus soon finds out that he'd tear the world apart if it would kept James Potter safe.

"How long can we keep doing this?"

"Till the world stops ending."