Bushido in the Bedroom

"Bushido in the Bedroom" (also referred to as "Book of Secrets") is an item found at Mt. Zozo during the World of Ruin, when the party encounters Cyan a year after the cataclysm. Along with guides for understanding and operating machinery, the player finds the book in Cyan's trunk.

Before the release of Final Fantasy VI Advance, the item was merely called "Book of Secrets" and the game shed no light whatsoever on the nature of its contents. With the release of the GBA version of the game, it was obviously implied that the "secrets" referred to advice on sex.