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      In my fourth life I took possesed of the dead body of Erza Sacarlet as own and lead all the slave to freedom and even manged Jerella from whatever was controlling him. she uses elemental magic spells to eliminate all the guards without exception and takes the lead of the group of slaves in order to escape the tower.The troop of slaves reach the mainland of Fiore and notify the authorities of their experiences in the tower. 

Erza, his friends and the future Oraccion Seis who were also slaves join Fairy Tail by following Rob, further strengthening the guild which when Lucy arrives will have 9 S-class mages: 

-  Makarov Dreyer

- Gildarts Clive

- Luxus Dreyer

- Mystogan

- Erza / Sakura

- Mirajane Strauss

- Jellal Fernandez

- Midnight / Macbeth

- Hot-Eye / Richard.

The presence of Sakura in place of Erza will bring about many changes,especially during the arc on Nirvana and the Oracion Seis. She will eventually marry Jellal, although he will never know that the original Erza that he was in love with, had died a long time ago, but that dosen't mean that he didn't fell in love with the new Erza.

They both had two children a boy and a girl who became a powerful Fairy Tail mages, like their parents their name are James and Rose Fernandez. 

         In the end, Sakura would remain in this world for about eighty years, further expanding her repertoire of magic. Plus a fairly large collection of armor and jewelry. Weapons (she replaces Erza, nicknamed Titania the Fairy Queen of Fairy Tail after all!).

Erza Fernandez née Scarlett died 10 years after her husband Jellal Fernandez's death and by then her two children Rose and James Fernandez already have their own lives and family of their own. They don't need her anymore.