Global Mutation, One Spear Is Enough

A black rain caused biological mutations around the world. Alien beasts were rampant before, and aliens invaded later. Blue Star faced an unprecedented crisis. Yang Si was originally a small security guard, but he possessed a unique skill - the Yang family's marksmanship. By chance, he was appreciated by the Duty Alliance and became a Dutykeeper. From then on, he joined in the struggle between supernatural beings and beasts. Yang Si, the only one in the Dutykeeper Alliance who does not have superpowers, said: "No superpowers are needed, a spear is enough!"