Hello, Chocobilly. Welcome to the FFVII riddles thread.
Cousin should be construed as something metaphorical. If you know what the answer is, you can figure out what the metaphorical cousin might be.
Also, Chocobilly made an obvious guess. See how PA guessed? You need to think like that. Also you ignored my hint where I defined 'master' for you. The first line should help you figure out what is so unusual about the answer. Unfortunately, PA misconstrued the definition of 'play.' What else could 'play' mean?