It only takes a single disharmonious element to throw off the entire composition. Fifty years before Robert Baratheon was to ascend the Iron Throne, Westeros receives one hell of a bad musician. Harry never did care about any player other than himself.

A now reformed Pansy Parkinson is working in the Department for the Care and Relocation of Dangerous Creatures when a strange case goes awry. Cast into Westeros as a child once more and given the name Melara Frey, Pansy has to work to rebuild a life for herself, find love in the process and perhaps take care of a few lions while she's at it. Beware the Serpent Queen (Pansy/Robb)

A different upbringing leaves Harry Potter with an early knowledge of magic and a view towards the Wizarding World not as an escape from the Dursleys, but as an opportunity to learn more about it. Unfortunately, he quickly finds that there are many elements in this new world that are unwilling to leave the Boy-Who-Lived alone.