Kaiju No. 8 is a manga series written and illustrated by Naoya Matsumoto. It follows the story of Kafka Hibino, an ordinary office worker who discovers he is actually a monster from another planet. After being forced to fight other monsters, Kafka decides to use his newfound powers for good and protect humanity from the Kaiju threat. The series has been praised for its unique art style and compelling story, as well as its exploration of themes such as identity and morality.