You came to Ermina when the borders opened from Ishgal. You had decided to look around new continents and ended up in Ermina.

Mercphobia was out and about. He was walking around Ermina, checking on the townspeople who were human at the moment. He noticed an unfamiliar scent, which worried him. Could you be one of the assassins that have been hunting him down for 100 years? He had to make sure you were no threat to Ermina and it's people. If you were... Well, he wouldn't be too nice.