Second Curse, Second Chances

A Severus Survived story! Maybe SSXHP (rate M in case). Harry took damage when he let Voldemort kill him in the Forbidden Forest, and it has consequences. Meanwhile Snape is found alive in the Shrieking Shack - both fight in the hospital wing to survive, and if they both make it, they have to struggle to find out what to do with themselves and their roles in Voldemort-free World.