To get a Ryu Book, use Data Drain frequently. However, do not use Data Drain can cause some damage to you. There are only eight Ryu Books in volume one. The Ryu Books keeps a record of almost everything. It will tell you if you broke a record. It will then give you a new sound or movie for your computer on the game. Note: Movie only works the game has been completed, and all movies are just some memories of what happened. Check every Ryu Book if you got everything for the computer. If it is red, it can not create any more things for you. You can only check a Ryu Book when in the server.