Somebody decides to teach Harry about the importance of blood.
Harry is owed many life debts. In his fifth year, someone decides to actually honour theirs.
There was a reason that surfer crashed into Kono that day... and she really shouldn't have hit him. Kono's hot tempered response lands them a team mate that likes to cause mischief and has very little respect for protocol.
During the final battle Harry is hit with a luck spell... but who exactly got lucky? Harry finds himself in the future fighting a new war when all he wants to do is have a nice and easy life. So he decides to have fun instead.