Hi. This was originally a Sonamy fic One Shot But I watched An American Werewolf in London and I'm in the mood to write a story about lycanthropy.

It was a cold night and Sonic sat inside Tails' workshop in Mystic Ruins. The fox had gone outside to his plane to work on some malfunctioning parts and had left the teenage hedgehog alone. Sonic shivered, something was not right tonight. He stared at the ground, trying to let the worry pass, but he couldn't. He looked out the window into the night, wishing that it would just be daytime already, but time wouldn't pass as quickly as he wanted it to. He continued to watch the clouds part as the moon started to show. That was his queue to leave the workshop and go off on his own to avoid hurting anyone he cared about.

"I'm sorry Tails, I'm sorry everyone." He whispered to himself and bolted from the workshop in a burst of speed.

Tails saw him and called out. "Sonic, where are you going?" The hedgehog didn't answer him and ran farther and farther away. "SONIC!"

Sonic ran and ran, farther away from the ruins until he found a farm out in the middle of nowhere.

"Maybe I could stay here for the night. I hope that no one is going to be in there." Sonic thought as he crept into the barn. There were animals there. Not Good. After tonight they would be slaughtered, he was sure of it.

"Nice cows. I'm just going to stay here for the night. There is nothing to be worried about…I hope."

Sonic looked out over the bay at the moon through the barn doors. The clouds were still over it, but they wouldn't be for long, and then, things would get ugly, fast.

Back at Mystic Ruins Amy Rose knocked on the door of Tails' workshop. The fox opened the door and smiled at her.

"Hey Amy."

Amy smiled back. "Do you know where Sonic is?"

Tails' smile faded. "He just ran off. I have no idea where he is now. I can tell you which direction he ran of in." He pointed northeast. "He went that way."

Amy nodded. "Thank you." She turned around.

"Good luck finding him."

Amy laughed. "I know I will find him, I always do." She started running in the direction that Tails has pointed her in."

Tails watched her leave. "Poor guy." He closed the door and went back to his work.

Amy ran across the grass as fast as she could in the direction the fox had pointed her in. She could hardly wait to see him tonight and maybe steal a kiss from him. She came to a lake of water blocking her path.

"Well shoot. What am I supposed to do now?" She stood there thinking for a while before an idea hit her. "I bet I could run across it! I'm about as fast as Sonic is." She backed up far away from the lake and started running towards it. When her feet hit the water, she started, to her surprise, gliding across it.

"Oh my God!"

The pink hedgehog was surprised that she could glide across the water, she'd thought she would sink! And at that thought, she started to.

"Oh God, oh God!" She moved her feet faster but she wouldn't stay up. The hedgehog was submerged in lake water. She held her breath and started to swim upward towards the surface before she would run out of air.

Back with Sonic, it was after midnight. He sat in the barn shivering and growling, trying to hold the beast inside him back. It was getting harder to do so as the moonlight took hold of him. He couldn't take it anymore and went down in Child's Pose as he started to shapeshift into his beastly wolf form he was cursed with. His fur started to turn a dark blue as his lean muscles started to bulge. His skin started to turn light blue and his muzzle started to elongate to conform to the fangs that were tearing from his now black gums. His nails tore his gloves as they turned into claws and his tail got longer and more poofy. Lastly, his eyes changed color from green to gold. All through this painful transformation you could hear Sonic screaming in agony.

"AROOO!" The newly transformed werewolf hedgehog howled a great howl, startling the barn animals. Upon hearing them Sonic turned towards the animals and started to growl hungrily. The animals started to cower at the werewolf and quickly cornered themselves in the back of their pens. They knew they were about to be his late-night snack.

Amy had managed to start swimming across the lake and was almost across. She smiled to herself as she thought of her kiss with Sonic. When she got out of the lake on the other side she pulled a towel out of Hammerspace and dried herself off. When she was totally dry, she continued on the road towards the barn that her true love was in, she could sense his location from her tarot cards. When she got to the barn the door to it was locked. She knocked on the door.

"Sonic? Are you in there?" The pink hedgehog asked.

Inside the barn, Sonic had just finished slaughtering the last horse in the barn. He licked his chops that were now covered in thick, sweet red blood. His ears perked at the sound of Amy's voice. The little normal thought in him was screaming inside his head for her to go away, run far away before it was too late. He approached the barn door and growled at the visitor.

"Sonic? Is that you?" The person outside the door asked.

Sonic's ears went back as he tried to get a hold of himself. He started to whimper, his low voice came out of his mouth.

"Go away Amy!"

The pink hedgehog heard him and stepped back. "Why? Are you okay in there?"

"No! Now go!" He started to growl at her again as the beast started to take over again. "Don't come in here!"

Amy huffed. "Sonic, I'm going to come in there and you better tell me what's wrong." She started to open the door. Quickly Sonic rammed into it and stayed there, preventing the girl from coming in. Amy felt the push and barged her way in.

"Sonic what are you-?" Amy saw the werewolf and backed up against the door. "S-sonic!" She stared at the wolf's bloody mouth and the animals that lay dead on the ground.

"I'm sorry Amy!" Sonic backed away from her and started to whimper again.

"Sonic."

"No Amy, run away." Sonic quietly spat.

The pink hedgehog started to walk closer to the whimpering werewolf. "Sonic, I-I don't a-agree with what you did but- I still love you."

Sonic started to growl at her again, the animal in him started to come back.

"GO AWAY! OR ELSE!" He shouted in anger and fear.