Common Grounds, a coastal melting pot built out of the remains of many small nations as a final bastion against the flames of war. War has long since passed scarring the lands and the people left in them, but the walls still stand tall and proud. A symbol of protection and peace after a great turmoil, and a beacon to those seeking fame, fortune, security, or perhaps a place to belong.

Eight "Classes', from full frontal warfare to artisans, are trained in the city and act as mercenary forces on a day-to-day basis, drawing in many individuals hoping to be accepted and apprenticed.

Lily, one such individual, arrives to start again, but not all her ghosts are willing to stay in the past...

Also on RR:
https://www.royalroad.com/fiction/42107/deaths-lily