Immortal Warrior Reckoning (updating)

Leo is a mute teen boy working as a janitor in a fight school. When the girl he secretly loves becomes a demon gang’s target, his powers are awakened, revealing his true identity as the immortal warrior Leonidas, once a Spartan King. Now Leo must step out of obscurity to protect the one girl who protected him and face the ancient evil that’s been hunting him for thousands of years.