Onmyou Tai Senki

Riku Tachibana is a first-year junior high student whose life takes an unexpected turn when he faces a duel with a man identifying himself as a "Warrior of Earth." As a result of this encounter, Riku learns he is one of the last surviving "Warriors of Heaven." Equipped with a device known as "DRIVE," he can summon a Shikigami named Kogenta. With this newfound power, Riku becomes committed to battling the Warriors of Earth.