Bond Built in Fire (слэш)

When Harry finds Snape again, he does not know what to expect. All he can do is hope. Hope that the man will not be too angry with him for being disturbed, hope that he let’s Harry explain, and hope that maybe, just maybe, he will even let him stay.
When after five years of utter silence Harry Potter stumbles back into Severus’ life, he does not know what to make of it. All he knows is that despite his dislike of the Wizarding World, he cannot lose Harry again.
But there is a threat looming on the horizon that not only threatens their fragile bond, but also the whole Wizarding World and everything they fought for in the last war.
Or
Seriously, can those two never get a break? Come on!
(The author apologises in advance for making our boys suffer, but at least we finally will see Snarry. Though slow burn, there is a burn, I promise.)