Amazon has listed the sixth volume of the Kingdom Z manga as the final volume, and it will be released on Wednesday.
Synopsis
Five days after the zombies appeared… The protagonist, Masaru, who is having trouble surviving at school, is saved by two students from the same school, Sekigahara Miki and Nariki Karin. Even though Masaru is relieved by his rescue, he becomes desperate when he discovers their true intentions!!
Authors Harawata and Watanuki Kodansha 's Comic Days website and app in November 2018. The manga finished its serialization on the app on October 12, and Kodansha published the fifth volume in June 2021.
Source: ANN