FAIRY TAIL Zero Vol 1

From the Kodansha edition

Mavis, the future first master of Fairy Tail, lives with her best friend Zera on Sirius Island. At six years old, Mavis is just a simple bookworm who dreams of meeting fairies someday. In the year X686, treasure hunters invade Sirius Island, forcing Mavis to take flight and embark on a fantastical adventure! She etches the joys and sorrows of each new encounter and heartbreaking farewell into her memory, and finally figures out her ultimate goal…

Source: Anime News Network Encyclopedia