Bingo books are a common item in the Naruto universe. They are often used as place markers to keep track of who has won a battle or contest.
They have also been used as a way to track down missing people or objects.
The Bingo Book is most famously associated with the Naruto manga and anime series. In the manga, it is first seen when Sasuke Uchiha uses it to track down Shikamaru Nara.
Later in the series, it is used by Naruto and his team to track down Jiraiya. In addition, the Bingo Book plays a role in the climax of the series, when Naruto and his team attempt to rescue Gaara from Sunagakure.
The Bingo Book is also featured prominently in the Naruto Shippūden anime adaptation. In this series, it is first seen when Team 7 goes to search for Jiraiya.
Later in the series, it is used by Naruto and his team to track down Sasuke. Finally, in the series finale, it is used by Naruto and his team to rescue Gaara from Sunagakure.
