From the Darkness
Jesslyn stopped short, her long dark hair swirling around her slim frame. Ahead, squeals and clicks rebounded off alley walls.
"Heartless," she muttered, though she could see nothing down the barely-lit space between decrepit four-story apartment buildings. The buildings, long abandoned, were a perfect breeding ground, hiding place and hunting ground for the mindless monsters.
Jesslyn crept forward, aware of the four-foot-long weapon suddenly clutched in her hand. Shaped like a key, the blade could sense Heartless in some fashion, appearing from nowhere when they were nearby.
As she reached the mouth of the alley, the clicking intensified as the creatures sensed her movement. Poking her head cautiously around the corner, she could just barely make out yellow incandescent eyes. The occasional antenna, bulbous head or gangly limb became briefly visible when one of the monsters would pass in front of a distant street light. Then it would melt into the shadows, slithering along in a puddle of inky blackness before resolidifying elsewhere.
Hand reflexively tightening on the grip of the keyblade, Jesslyn watched their juttering movements for a moment more before crouching low and slipping into the alley. If she moved smoothly and slowly enough she wouldn't trigger their echolocation. Closing with the nearest Heartless, she abandoned stealth and slashed at the beast, cutting it neatly in half. The carry through flung black ichor on the right wall.
The noise of her footsteps as she turned for the next Heartless aggro'd the rest of the mob and they began to converge. Precisely what Jesslyn wanted.
As she mob gathered around her she began chaining combinations of strikes together; stabbing, slashing, striking, blocking, sliding from monster to monster, painting the alley with gore. She whirled and drove the keyblade down into the round skull of another Heartless before it slowly dawned on her that all the enemies were dead. She quickly looted the bodies (despite not wearing clothes they seemed to somehow carry very useful items) before turning and continuing her journey through Town. Behind her the bodies slowly faded, leaving only the splatter of their blood on the walls to mark her passing.