Gunjō Senki (群青戦記, "Record of Ultramarine") is a Japanese manga series written and illustrated by Masaki Kasahara. It was serialized in Shueisha's seinen manga magazine Weekly Young Jump from August 2013 to June 2017. A sequel, titled Shin Gunjō Senki, written by Kasahara and illustrated by Ajichika, was serialized in the same magazine from January 2021 to March 2022. A live-action film adaptation, titled Brave: Gunjō Senki, premiered in March 2021.