Ichiro is a young boy who has devoted himself to protecting his little brother, Jiro, from the Drax, beings that threaten humanity. One day, when Ichiro is attacked by the Drax and pushed to the brink of death, the Teras Foundation appears before him. This organization unites humanity and fights against the Drax, wielding the power of monstrous wolves known as “Lycans.” After witnessing their overwhelming strength, Ichiro throws himself into the battle to protect his little brother…