The toll of misery (Drarry)

it's eighth year and every one is happy everyone except two.

Draco is dealing with the anger from his father and the loss of many he secretly loved. As well as getting his inheritance.

Harry thinks himself as a murderer and believes he killed everyone's loved ones and blames all the deaths on himself. And now finding out he has a mate from the other side of the war.
how can two very different people help in two very different ways.