This is so great! It's literally about being imaginary and one of the lists is focused on what that means in your case, but a couple of other lists also tie into "what you let others see and what you keep to yourself" in subtler, more grounded ways. My other favorite part is the things on the item list, which made the items seem so real and interesting to me with just little word and description choices. I haven't had a chance to play with this playbook but it seems like it would be really cool to!