Road to the Highest Ruler No. 3 is a notebook owned and used by Ainz Ooal Gown.
For Ainz, who used to be an average person, acting like a leader proved difficult. Thus, he repeatedly practiced playing that role just in case a situation called for it. This notebook seems to be the third of its kind. The entire memo pad is filled with phrases Ainz came up with.
It is described to be merely a simple memo pad. It has the appearance of a notebook used by a school student, with "NOTE BOOK" being written on it's cover with a blank space below it where Ainz has written the title of the book.
The notepad contains all of Ainz’s thoughts and phrases he believes a Ruler should say in a given situation. It seems to have two prequels.
- In the Light Novels, the notebook is never named and there is only one version.
- To protect his reputation as Nazarick’s perfect ruler he locks this item in his Magic Box.