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: Drew only buys new underwear for special occasions. Sentence2: Like when his ex-girlfriend flew into town from Houston. Sentence3: She told him the day and time she would arrive. Sentence4: That morning he went to Walmart and bought new underwear and socks. Sentence5: Drew needed them too, his old shorts were stretched out of shape.
A:
Ex-girlfriend, Drew