Mercenary Tom

From the introduction:

An older man, in his 60s or 70s, walks feebly through the marketplace of Unification City. None pay him any mind, and he minds his own business, reaching his favorite pub without any trouble. He sits at a table, orders a beer, then tries to relax. "Evening, Tom," the bartender says cheerily. Out of the corner of his eye he sees a large, muscular man approach him. The man's armed with a morningstar, while Tom carries nothing...