Kerberos Saga is a Japanese multimedia franchise created by Mamoru Oshii. It features an alternate history of Japan and focuses on a dystopian world where the Tokyo Metropolitan Police Special Armed Garrison, known as Kerberos, enforces order with armored suits and heavy weaponry. The series intricately combines political intrigue with intense action, exploring themes of authority and rebellion. It has expanded into various media, including films, manga, and novels, captivating audiences with its unique narrative style.