.
.
He could feel it. It was moving inside him, eating his blood and crushing his intestines. Harry clenched his teeth and pointed his wand at the wound.
"Carpe Retractum," he whispered with a hiss of pain. The rope of light twirled and glided into his wound. Harry clenches his teeth as pain overtook his nerves and made him whimper and shake.
Harry took a deep breath and braced himself. The strand of magical rope found the strangeling inside him and gripped it tightly. Harry felt the strange vibrations passing through the thing and reaching his magic. It was evil. Dark. He had never felt anything like this. Even Voldemort's magic was laced with layers of light and neutrality. This thing was a dark pit where light died.
He winced as the rope of light slowly pulled it out of his body, tearing it from his flesh where this parasite had tethered itself to. A whimper escaped his mouth despite him clenching his teeth tightly. He tilted his head to catch a glimpse of what came out of his body and almost dropped his wand in disgust and fear. It was covered in blood, wet and sickly.
The magic rope pulled it out and It fell down on cerulean tiles of the lavatory with a loud splat. Harry jumped away from the thing and watched it squirm on the ground pitifully, trying to find a home. It almost reminded him of Voldemort in limbo at King's Cross. But this thing was much smaller and much more disgusting.
Harry pointed his wand at it and for a moment a strange horrifying thought crossed his mind. He wanted to eat the creature. He wanted to grab it and tear it apart with his teeth and chew on it.
The realization of he wanted to do made him actually feel sick enough to vomit. He coughed and retched until the bile left is throat. The wound was still bleeding and he could feel the pain deep in his bones with every cough.
"Episkey," Harry muttered, watching as the wound started to close, still raw and red. It would take a while for it to heal.
He needed to kill the parasite before it found its way into another's body. But before he could cast a spell, he noticed that the wicked thing was clenching into a bulb. He realized what this thing was. This was a bargh - a soulless artifact of extremely dark magic. This thing was more dark and unholy than a horcrux. They could only be created if someone...
Harry shrieked. That was impossible. He didn't want to believe it. If there was a bargh hatching inside his body and growing into this beating-heart alive creature, it could only mean one thing. And that was not something Harry was ready to accept.
He could use this though. He could use it to bring Hermione back. He didn't need to do more research.