結界師 [Kekkaishi] #1

This volume launches the supernatural action series Kekkaishi, following junior high student Yoshimori Sumimura and his childhood friend Tokine Yukimura as they inherit their families' duties as kekkaishi—barrier-wielding guardians who protect their school from evil spirits. It collects the opening chapters of the manga, introducing the core conflict between the Sumimura and Yukimura clans and the mysterious Karasumori site they must defend.