Watch the credits at the end of the game to continue playing with your character.

At the end of the game choose to kill your sister. If you watch the credits you will get to continue playing with the sword of Aeons.

The treasure clues start you on the dock at orchard farm. They lead you through the apple orchard and down the path towards the barn. At the first barn, dig in between the barn wall and the bales of hey to find the Frying Pan.