A Journey to Old Japan is a book that you will find in the Magic Tree house. Annie and Jack are going to tell you a secret that you can use if you wish to travel back in time to ancient Japan. You will just say I wish while using the A Journey to Old Japan book.
How to Get A Journey to Old Japan
When you get to the magic tree house, Annie will explain that Jack is cranky because he lost his sunglasses. Go in to your inventory, and hand him over the red sunglasses that you had picked up earlier prior to climbing up the ladder. Jack will thank you for handing him back his glasses. Now, walk to the very left side of the tree house and pick up the green book entitled Frog Creek Pennsylvania: Home Town USA. Now, walk up to Annie and select ‘How does it work?’. She will then lead you to a red book entitled A Journey to Old Japan. Pick it up. Now, go to your inventory and select USE to start your journey.