John is enjoying the outside air after being cooped up in a cell for a few days. Being up high and feeling the wind blowing through his hair is calming to him, so high places are places he enjoys. He was planning on just sitting somewhere and thinking about things for a bit, and the stairs are pretty high up.

He sees someone else sitting up there but they look busy drawing so he doesn't say anything at first, just sitting down on the steps and looking out at the view quietly.