"Hey MJ! I can drive again. You know what that means?" He picked his niece up swung her around. "IMPALA" she yelled happily. "Damn straight" he grinned "So were do you want to go?" MJ screwed her face up in thought. "The park" she decided.
It was a crisp Autumn day, and MJ ran through the park, kicking the leaves in the air. Dean sat on the bench, as he watched her sliding down the slide, shrieking with glee, just to repeat the process. She then ran to the swings. "Push me Uncle Dean" she demanded, giggling as as she soared higher.
As he was pushing the swing, he noticed two trees, that stood out from the others. He had a weird feeling he had seen them before but he couldn't work out where. After an hour of playing MJ was tired out and he carried her back to the car. She fell asleep as they drove home. He stayed for dinner with Jess and Sam, and then drove back to his apartment. He had been back there just a month and was easing back into living alone again.
"You would of loved today Cas" he said, looking at the picture that Castiel had taken from him the day he died. We were at the park and MJ loved it so much. She would of loved you. Blue eyes stared back at him. Suddenly Dean paid attention to the background of the photo. "Wait, that is the pair of trees I saw earlier." he said "That is where I saw them before!" he grabbed the other pictures that Cas had taken and found the one that focused on the trees. "That's where it is!"
The next morning he set off back to the park. He went past the playground and to the foot of the two large trees. Walking between them, and through some overgrow, he found himself in the small clearing from Castiel's pictures. It wasn't as well groomed as it had been in pictures, and had a forlorn, neglected look, but it was undoubtedly the same place.
Dean spent many hours sat on the rusted old bench, just staring around at the little piece of green in the big city. He told Cas how much he missed him, about being back in his apartment, the crazy exploits of the people next door. "I miss you so much, you know" Dean said. "You did so much for me, and I want to do something for you. He lifted the small urn from out of his bag. "Gabriel gave me these. I was going to keep them, but I know this is where you would want to be." Dean scattered the ashes over the flower bed, just as Cas had sprinkled seeds the year before. The wind blew the ashes up into the air, spreading them. "Goodbye Cas" Dan whispered.