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: I learned how to play Rock Paper Scissors when I was an adult. Sentence2: I got into an argument with my friend, and he suggested we use it. Sentence3: I had no idea what I was doing, so I lost every turn. Sentence4: Eventually I got better at it, and won a few rounds. Sentence5: He gave up after I started winning every time.
I (myself), My friend