And hence the name of the fic, Harry inherit Excalibur and Merlin's staff, good luck trying to live a peaceful live with those powerful relics on your possession.
On the bright side, when Harry learns to control those both artifacts, he will have the power to protect his beloved girls, i can't wait to see who this girls are.
Author's response
if you really want to know, head over to HPFFA and look at this story there. The programming over there forced me to tell what the pairings were before I wanted to release them >_