About the Bugle Call Song of War Manga Volume 1

Left for dead after a battle, Luca is saved by the mysterious Pontiff and learns he is not the only person with unusual powers. The Pontiff has formed a special team of Branchhexed individuals he plans to use to help him defeat rival empires, and Luca learns that his powers, rather than being an escape from the battlefield, now force him to be a muse of massacre.