Haru wields the sword Ten Commandments, a massive blade that serves as Haru's main means of combat. It utilizes Rave Stones to increase its power, and with each new Rave Stone equipped to it, it gains new powers to defeat those who use the Rave Stones' corrupted counterparts called Shadow Stones or Dark Brings. Despite being just 16 when the sword was given to him, Haru wields the sword as if it were second nature to him.