Curse Of Pain

What if at the instant Voldemort was killed, he cursed Harry Potter for eternity?

Harry Potter is cursed to live a life time full of nothing but pain. The curse he was struck with was one no one had seen before and so now is stuck with it for the rest of his life.

The curse puts the poor man in excruciating pain for one hour randomly every day. When it is over, Harry is covered with cuts, bruises, and burns that appear seemingly out of no where.

However, he never lets that stop him from doing what he loves, which is teaching.

Now, ten years later, Harry Potter works as a Defense Against The Dark Arts teacher at Hogwarts alongside Hermione as the Potions professor and Neville as the Herbology professor. Ron decided to become an Auror and was doing a magnificent job. Harry is also raising his now ten year old Godson, Teddy, who during the day goes to a wizarding school while Harry teaches lessons.

But what happens when Teddy brings home his best friend, Scorpius, who just so happens to be Draco Malfoy's son?

What will the two seemingly enemies think of their sudden reunion?