On this day, you wake up and find that you have traveled back in time to the ancient era of barter. In this day and age, there is no concept of money, and every transaction between people depends on what the other person is willing to give up for what they want. In order to survive, you have to join this ancient and primitive exchange game, but fortunately God has been kind to you, not leaving you with four walls, giving you the identity of a chicken farmer. But you only love fish, so you wan...