From The Past, Chapter Three.
Remus Lupin sat on the ground, leaning against the wall. His arm was tingling as the new scars formed on it. He did not complain. Finally, though, he felt the tingling sensations stop. He looked out the nearest window - the Sun had not yet come out. His younger self must have fallen asleep. He clung to the wall to pick himself up and moved towards the door. He opened it and walked inside.
Inside the room he saw himself, curled up on the floor. There were cuts and scratches all over his body. They were in the same places as the scars that had formed on his own body. He looked around the room. It was destroyed entirely. The walls were ripped up, and pieces of glass from the antiques that had been inside the room were laying all over the floor. He closed his eyes and though very hard about what had just happened.
"Why can't I remember this…" he whispered to himself. He looked back at his wolf form. Finally, he could see the Sun rising through a small window in the room, and his younger self began to transform back into a young man. He stood up and walked over to what had been the couch. A woolen blanket that once sat there was mysteriously intact. He picked it up and saw what had been laying under it. The picture of the Marauders, which had once sat completely intact on the coffee table, was destroyed. The photo was ripped in half, and was graying into a dark black color. Lupin set it back down and took the blanket over to himself.
He wrapped up the young man and picked him up, taking him to his own bedroom and laying him down on the bed. He looked at his young self for a few moments, and then stood up to leave the room. A mirror was hanging next to the doorway, and in it he saw a scar running down his left eye to his cheek. He looked back at his younger self, to check for a cut, which he saw, but also noticed something else happening to himself. Remus Lupin was turning back into a werewolf. Lupin ran over to him, to prevent him from getting up, but he didn't. He didn't even turn fully into a werewolf. He stopped halfway through a transformation…his skin was nearly entirely grey, and his half open eyes were turning a bright yellow color. His transformation stopped there, leaving him what looked like half a werewolf.
Lupin frowned, and began walking out the door again. He saw his younger self's reflection in the mirror as he left, and took the mirror down. He placed it on the wall outside of the room, closed the door, and walked down the stairs towards the kitchen.
"Good morning, Remus!" Molly was awake and had somehow sneaked down the stairs before him to begin making breakfast. He looked up at her, surprised at her animation, and she gasped. "My goodness, what happened to your face, dear? Here, let me look at it," she began walking towards him, but he held his hands out to stop her.
"You won't be able to get rid of it, Molly."
"Oh, stop that…I can get rid of anything!"
"I'm afraid that's not true. Now, Molly, could you please get me some warm water in a bowl of some sort…He hurt himself quite a bit last night," Molly looked at Lupin's solemn face, and suddenly understood. She took a bowl out of the cupboard and filled it as Lupin had asked. She handed it to him with a small cloth.
"Maybe you can get rid of some if you start soon. How is He, Remus?" Lupin took the bowl and frowned at her.
"He is not well. Molly, please don't let the others go in to see him. Something very odd has happened to him, I'm afraid."
"Alright, I'll try to stop them. Remus…how do you feel?"
"I'm fine Molly," Lupin said as he began walking back up the stairs.
Finally, he got into his bedroom. His pace slowed dramatically as he walked over to his bed, where the young Remus Lupin was sleeping. He took the cloth out of the water and began running it over his younger self's wounds. After a couple of minutes he could hear the others waking up and going downstairs to eat breakfast. They were a loud bunch, just as he had remembered them to be. About an hour later, he could already feel some of the scars on his own body disappearing, though the marks from them remained on his younger self's body. It was then that Remus Lupin woke up. As his eyes opened, the elder Lupin moved into a different angle so that the boy could not see him. But at the first moan, Lupin decided that it would be stupid to simply stay quiet.
"You had a rough time last night," he said to himself calmly. "Didn't you?"
"Yeah…" his younger self answered. "Madame- wait, who are- oh…right. I had almost forgotten."
His younger self tried to sit up, but finally saw that he couldn't. So, he lay on the bed, and continued speaking softly. "Last night…you asked something about a potion. What were you talking about?"
"I'm surprised you remember that," Lupin answered, still fixing the boy's wounds in shadows. "After you graduate, a potion is going to be invented to help you with your transformations. You'll still transform, naturally, but you'll be somewhat human."
"How did they come up with that?" The younger Lupin asked him.
"It was a mistake, actually. A man tried to murder a werewolf with Wolfsbane, but mixed the ingredients wrong. Instead of killing the wolf, it became human enough that it could steal the mistaken recipe for the potion."
"It's very helpful, " he added softly.
"Oh. Do you have any?"
Lupin shook his head. "Not any more, I'm afraid."
"Why not?"
"It was lost…it's a long story."
Lupin continued washing the boy's wounds. Every once in a while his skin would bubble up with his odd transformation, and the young Lupin would twitch slightly. Finally, the boy spoke.
"I feel funny…" he said softly. "Is something wrong?"
"I'm afraid so…" Lupin answered him, and moved into the light. The boy gasped at the scars on his face.
"Did…did I do that to you?"
"In a way…but not the way you think you did. You hurt yourself, and the scars remain on me and you. I fear that it means you will have them forever. That's not what you are feeling though. You said that last night was the full moon in your time, correct?"
"Yes…I had no idea that I would still transform…"
"Don't worry about it. I have a feeling that, because of your traveling through time, that your body is somewhat…confused."
"What do you mean?"
"I think that you will transform both on your full moon and on ours…and between them."
"What are you talking about?"
Remus Lupin stood up and walked towards a set of drawers. He opened the top one and pulled out a small mirror. Very slowly and carefully, he handed it to his younger self.
"Oh my…" his younger self chanted. Tears began to form in his eyes. "If I would have known that this would happen…"
"I'm going to try and find things to help you. Besides, it can't last very long. You'll be home soon, I'm sure."
"How do you know?"
Lupin stood at the door, opening it slightly. He answered.
"It hasn't happened to me yet."
As he was shutting the door, he heard his younger self speak to him.
"Please…don't let them see me. Don't let them in."
'Don't worry, I won't…' Lupin thought to himself, and walked down the stairs for breakfast.