The goal of the Sleeping Book Collection Operation was to find a way to prevent Mr. Gentleman from dying before a method of rejuvinating him could be discovered.
Mr. Gentleman’s knowledge, personality and memory are transferred into several books to be stored and concealed from Dokusensha. These books were made of paper that could hold the human genome, called "Skin Print", was developed by Jiggy Stardust, an operative of the Special Operations Division. This process “kills” Mr. Gentleman, although he can be reconstituted from the books using a body with the capacity to store him. Mr. Gentleman was converted into the Gentleman Books.