Prologue

The guild started to run out of business. Fairy Tail got torn down and got turned into a café. Makarov asked Mystogan to brainwash some of the members. The guild wizards then spread apart, not to ever talk to each other (for now).
A year later, Makarov built a wizard college called Fairy Tail University. Makarov got in touch with the wizards he didn't brainwash, to be professors at his university.

Some of the wizards saw the university, and signed up. They forgot some of their magic, but mostly their relationships with their former guild-mates.
This starts their new life at the university with their old-new friends.