Revenge is sweet (слэш)

10 years after the Battle of Hogwarts, Harry was happily working with George at Weasley Wizard Wheezes, even though his life was not perfect. Somehow he hadn't aged a day since the battle, and he still got hauled by people when he went out and appeared on the Daily Prophets every once in a while for inane rumors, and he was still steadily single (not by choice) while his friends all got married and had kids.
But well, Harry hardly ever complained about life anymore, until one day one of his experiments with his newest prank product exploded and he was whisked away - into the past. Still, he would take whatever he could like everything else in life, and NOT complain.