Yuu made a small mewling sound as she clutched to the fading shreds of the black tapestry of sleep, she'd been having such a good dream... She tried to snug down into her coversl only to realize she didn't have he covers. She didn't have a bed, either. She could feel the jagged press of the concrete on the cheek, and her eyes snapped open in surprise. The place was dark, and a softly buzzing street lamp, yellow with age and speckled by the thick film of insect corpses illuminated the filthy, trash-covered alley she lay in. She sat up, quickly coming to her feet. "...What the hell?" she muttered to herself, as she crept forward, poking her head around the corner. The scene was bleak, and vaguely terrifying to the unwillingly innocent teen. She could feel the symbiote change color, turning her black from the neck down as it clung to her figure. Sometimes it did things like that, those survivalist things she was too busy being rational to do.
As she looked around the corner, and slowly stepped into the street, she looked around nervously. "Hello?" she called, hesitantly, looking for some sign of life in this barren place. And she got it. A clatter from one alleway over, and she saw a massive dog, easily up to her ribs, with long, powerful legs and a wolfish face. It was covered in gray, curly fur, matted with blood and stained with filth. Her first instinct was to go greet it, but something about this dog made her realize this was no tame beast. It snarled, and backed down on it's forelegs, a harsh mockery of a play bow. She took a staggered step back, and the beast lunged. It charged the distance, two buildings away from her, it was a mere ten feet in what felt like an instant. She turned to run, an istinctual urge to flee. She knew she couldn't escape it. She needed a weapon. Something to fight with...
It was strange. The dog should have caught her by now. She realized she was pretty much keeping pace with the beast snapping at her heels. The dog was confused. No prey had ever run this fast. But it had never seen prey on two legs before. Still, the distance was closing. This strange prey would be his.
Yuu's subliminal call for a weapon was granted as the alien hump on her back unfurled itself into a trio of long, scything blades on whiplike tentacles. Yuu could sense them. She knew they could reach. She did what came naturally. She flexed them, one blade going into the dog's braincase, the other two catching it in a pincer movement, sliding between it's ribs, spearing it's heart, lungs, and a dozen other important organs.
As the limp courpse sank to the ground, she did the same, falling to her knees as she realized what she'd done. She'd killed a dog! And she hadn't even hesitated. In her moment of horror, she could feel something stange from the tenatcles. She didn't have to look and see what they were doing. She could fell everything perfectly, as though she were doing it herself. The blood on the blades sucked into to black puttylike material. Suddenly, they shifted from blades into wicked beaks, splitting down the middle as they began to feed on their prey, tearing off shreds of meat and dissolving them instantly into energy or mass, or something. She ccould feel the symbiote growing stronger, and herself feeling less hungry. It was sick and wrong, and she knew it, but it didn't really feel bad, either... after all, to the victor goes the spoils. And she was hungry. She could almost taste the meat as the energy flowed through the symbiote into herself. Not bad. Could use some seasoning...
She promptly threw up as the realization hit her of what she was thinking. Bear god, what was she, some kind of animal? She was a human! A human! With wills and morals! She couldn't let herself forget that. Rescue was no time soon, she couldn't let herself lose sight of her humanity. She wrenched the symbiote from it's meal, and ran silently through the streets, tears running down her cheeks, the tendrils once more retracted into their usual backpack shape.