Gianna355
Seraphina has called Fairy Tail home for as long as she can remember.
She grew up fighting beside Erza, arguing with Gray, laughing with Mirajane-and constantly getting dragged into trouble by a pink-haired Dragon Slayer named Natsu Dragneel.
Natsu is her best friend.
Her partner.
Her biggest headache.
And, although neither of them realizes it yet, the boy who has held her heart since childhood.
But Seraphina has secrets even she doesn't understand.
Fragments of a forgotten childhood. A mysterious form of Celestial Magic unlike anything Fairy Tail has seen. Five ancient spirits bound directly to her heart.
And a surname she hasn't spoken in years.
**Heartfilia.**
When Natsu returns to Magnolia with a blonde Celestial Spirit Mage named Lucy Heartfilia, Seraphina's forgotten past begins to unravel.
The stranger Natsu brought home isn't a stranger at all.
She's Seraphina's little sister.
As Lucy becomes part of Team Natsu, Seraphina finds herself fighting alongside the family she lost and falling deeper for the boy who has been beside her all along.
But the stronger Seraphina's love becomes, the stronger her magic grows.
And there is something about Celestial Heart Magic that even Seraphina doesn't know.
Something powerful enough to protect everyone she loves.
Or destroy her trying.
**A Fairy Tail fanfiction following the original storyline with an original Heartfilia sister, new magic, new battles, sisterhood, found family, and a slow-burn Natsu Dragneel romance.**