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.

Sentence1: Johnny wanted to bake a blueberry pie. Sentence2: He bought all the ingredients to bake it. Sentence3: When he got home he baked the pie. Sentence4: He called his friends over so that everyone could have a slice. Sentence5: He was happy that he had baked a pie.
Friends, Johnny