Also referred to as Muscle Prophecy. Appears in the Throne Arc. It is a prophecy book written by Kinnikuman's ancestor which tells of the future. It contains information on the Kinniku Clan and all Choujins connected to them. No one can escape from this destiny (the only exception being Super Phoenix, whom Kinnikuman personally revives with his Face Flash technique). Furthermore, if a page from Prophecy Book is burned then that part of history is erased, and if a specific Choujins page is burned the same will happen to them. The first victim of this was Kinniku Ataru.