In this task, you're given a story (which contains five sentences only). Your task is to find all the characters which are available in the given story.
Q: Sentence1: Aaron was laying on the couch. Sentence2: He had spent the day at the lake and was now sunburned. Sentence3: His burn began itching uncontrollably. Sentence4: He started to scratch and realized that his skin was peeling. Sentence5: He continued peeling all of the skin away and the itch went away.
A:
Aaron